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Alum Root
Heuchera pilosissima
CA Bloom May - Jun
Pink, white flower
Tiny petals
Basal leaves
CA native
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American Brooklime
Veronica americana
- Height to 1 ft.
- CA Bloom Jul - Aug
- Blue or violet 4-petaled flowers
- Opposite leaves
- Round stems
- Grows in fresh-water wetlands, such as stream banks
- Stem runs along the ground, up to 2 feet long.
- CA native
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Look for 4 petals and opposite leaves with a round stem. Green center guides in pollinators.
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4 pale-blue petals with 4 green sepals behind them.
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Opposite leaves up to 3 inches long. Flowers in groups at the end of stalks.
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Andean Pampas Grass
Cortaderia jubata
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Tall stems (up to 20 feet) and showy tops make this plant stand out.
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Many stems join at the root.
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Grass stem is hairy. Leaves connect to the stem in a sheath.
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Annual Beard Grass
Polypogon monspeliensis
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Annual Beard Grass is topped by large, fluffy spikes. They're framed by flat, rough, green leaves to 8" long.
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Soft, dense spikelets are green until they mature. There are lots of spikelets in the spike, each producing 3 awns.
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Long awns let light through around the edge but the center is opaque.
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Annual Stinging Nettle
Urtica urens
- CA Bloom Jan - Apr
- Also called Dwarf Nettle, this plant grows to about 2 feet tall.
- Stinging nettles, in general, produce a stinging sensation when touched. However, EFlora says that this specie's sting is not very strong.
- Found in shady areas.
- Not CA native
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Leaves are hairy, dark green, have large teeth, and end in a point.
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Leaves are opposite. Veins make indentations in the leaves.
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Small green flowers look like little balls.
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Annual Yellow Sweetclover
Melilotus indicus
- Height to 2 ft.
- CA Bloom Apr - Oct
- Spikes of tiny yellow pea flowers.
- Leaves in threes like clovers, but serrated.
- Compound leaves stand away from the stem on petioles.
- Wide ranging across the world, common in many areas.
- Not CA native
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Yellow pea flowers in a thin spike.
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3-part leaf, with serrations. Each compound leaf stands apart from the stem on a petiole.
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A common sight by the side of the road, these yellow flowers are easy to spot.
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Arroyo Willow
Salix lasiolepis
- Height 7 - 35 ft.
- CA Bloom Feb - May
- This is the most common willow in California.
- It's deciduous and is found near water.
- Look for narrow leaves that are wider near the tip than at the base.
- CA native.
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Leaves are about 5 inches long, smooth-sided and narrow. They're pale/hairy underneath, and wider near the tip than near the base.
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Classic pussies with yellow stamens. The buds are fused together (not overlapping) before they open.
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This willow has many trunks, sometimes growing as a tree, and sometimes as a tangled shrub.
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Australian Fireweed
Senecio glomeratus
- CA Bloom Apr - Sep
- Yellow composite flowers group at the top of a branched 6 foot plant.
- Leaves are alternate and deeply lobed.
- Found in disturbed sites below 1,000 feet, generally near the coast.
- Not CA native
- Moderately Invasive
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Composite flowers group at the top of the stem. They have no "petals" ( ray flowers).
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Leaves clasp the stem, grow to about 6 inches, and are deeply lobed.
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Grows to 6 feet or so, with lots of flowers near the top of the stem.
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Baby Blue Eyes
Nemophila menziesii
- CA Bloom Mar - Jun
- White or blue flower with a white center.
- Often black dots and blue veins on the petals.
- Leaves with deep opposite lobes, larger at the base of the plant.
- Grows low to the ground.
- Found many places, from the coast to the mountains.
- CA native
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Petals can be all white, or blue with a white center. Petals often have black dots.
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Here is the blue version. Notice the blue veins towards the center.
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Distinctive leaves with deep opposite lobes.
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Beach Sagewort
Artemisia pycnocephala
- CA Bloom May - Aug
- Tiny yellow flowers with some brown and green in them, forming a ball.
- Not as aromatic as the related sagebrush.
- Small alternate leaves shaped like mittens.
- Found on coastal strands
- CA native
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Rounded, yellow flowers among a thick growth of leaves.
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Leaves like fingers.
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Pale grey to white foliage with flower spikes sticking up to 4 feet tall.
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Bee Plant
Scrophularia californica
- Height 2 - 4 ft.
- CA Bloom Feb - May
- Bee plant is tall, with prominent triangular leaves and tiny brownish-red flowers.
- Small flowers are less than 1/2" across and have a nectar disk to reward pollinating bees.
- Opposite leaves have stalks that connect to the stem.
- Found in moist places below 8,000 feet.
- CA native
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This view of the flower from below shows two rounded petals on top, two side petals, and one folded out like a tongue.
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A square stem supports large, opposite, toothed leaves. This might make you think "Mint" but it's not.
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Bee Plant grows several feet high with opposite, narrow leaves sticking straight out. Flowers are on horizontal stalks near the top.
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Bigelow's Moss Fern
Selaginella bigelovii
Fern
CA native
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Big-Leaf Maple
Acer macrophyllum
- Height 50 - 100 ft.
- CA Bloom Apr - May
- This is the only California maple with big leaves.
- It has opposite leaves that turn yellow in the fall.
- In spring, small greenish-yellow flowers hang in clusters near the end of branches.
- It likes water and dappled shade. You'll find it near stream banks, in canyons and in open forests.
- CA native
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Leaves are quite large, many over 8" wide, with deep indents. No other maple in California has these big leaves.
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Flowers droop from branches in long clusters.
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Groups of two-winged fruits (called Samoas) replace the flowers. The wings help carry the fruit in the wind.
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Bird's Eye Speedwell
Veronica persica
- Height 4 in. - 1 ft.
- CA Bloom Feb - May
- This is a small, beautifully marked wildflower.
- Leaves are opposite and small, often with serrated edges.
- It's found in disturbed areas, often near agriculture.
- Not CA native
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The small (1/4"), 4-petaled flower has darker blue, radiant stripes. Notice how the petal sizes vary. 2 purple-tipped stamens and a green tinged center invite pollinators to visit.
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Leaves are opposite. Flowers cluster at the top of the stem. The plant is often recumbent, lying along the ground.
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This beautiful plant is easy to overlook because of its small size, but a pleasure to find.
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Black Cottonwood
Populus trichocarpa
- CA Bloom Feb - Apr
- A large riparian tree with alternate leaves
- Leaf stems are round (Fremont Cottonwood's is flattened).
- Widely distributed in California, except the central valley.
- CA native
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Leaf tops are glossy dark-green. Undersides are pale. Leaves are long and pointed, with small teeth on the edge.
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Alternating secondary veins connect to a central one.
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Grows near running water. Trunks get very large, and the tree height often exceeds 100 feet.
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Black Sage
Salvia mellifera
CA Bloom Mar - Jul
Violet, white flower
Irreg petals
Opposite leaves
CA native
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Mint flowers and leaves in whorls around the stem.
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Seed groups s become woody.
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Basal leaves much longer than wide, with a strong central vein. Flowers in whorls around the upper stem.
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Blazing Star
Mentzelia gracilenta
CA Bloom Apr - May
Yellow flower
Five petals
Alternate leaves
CA native
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Blue Elderberry
Sambucus mexicana
- CA Bloom Mar - Jul
- A large shrub with clusters of white flowers, plus compound leaves indicate an Elderberry.
- Berries are black but appear blue because of a waxy covering.
- Grey bark with vertical furrows.
- Common on stream banks and open places in forests.
- CA native
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White flat-topped clusters of flowers are easy to spot.
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Berries with a waxy covering makes them look powdery.
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Compound leaves with 5 - 9 toothed leaflets.
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Blue Fiesta Flower
Pholistoma auritum var. auritum
- CA Bloom Mar - May
This vine is covered with recurved stiff hairs that stick to passersby. The stem breaks easily.
- Leaves are opposite near the base and alternate higher up the vine.
- It's common in coastal and Sierra foothills, primarily south of the Bay Area.
- CA native
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This bright flower is about 1" across, with a pale ring around a dark throat.
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Sepals are pointed and hairy, alternating bent forward and backward.
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Leaf stalks have wings on their sides and wrap around the stem. Leaves are long with lots of narrow lobes that stick out sideways.
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Blue Gum
Eucalyptus globulus
- Height to 200 ft.
- CA Bloom Oct - Mar
- Flower nestled between stem and leaf.
- Leaves long, thin and dark green.
- Common, found in disturbed areas.
- Not CA native
- Somewhat Invasive
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Flower has many white stamens surrounding a central knob, and smells of honey.
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Mature leaves are narrow and curved, growing to a foot long. Woody fruits with 5 notches, grow to 1 inch across.
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Heavy trunks with bark that peals in large strips.
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Blueblossom
Ceanothus thyrsiflorus
- CA Bloom Mar - May
- This shrub is covered with evergreen leaves and produces prodigious display of sweet-smelling flowers.
- Look for grooves running the length of the stem.
- It comes in a variety of sizes, up to 30 feet tall.
- Does well on poor soil. Found in a wide variety of settings.
- CA native
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Hundreds of sweet-smelling tiny flowers form lavender balls of color accented with white or yellow.
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Leaves have 3 parallel veins. The underside is dull, but the top is a shiny dark green.
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Blueblossom is full of flowers when it blooms, March to May.
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Blue-Eyed Grass
Sisyrinchium bellum
- Height 1 - 2 ft.
- CA Bloom Mar - May
- This is not a grass but an iris.
- At the top of each stem are violet flowers with darker purple lines leading to a yellow center.
- It's common in open, usually moist areas.
- CA native. Endemic to the California Floristic Province.
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Beautiful 1/2" wide flowers have blue to violet petals and a golden yellow center to guide pollinators in.
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Leaves are grass-like, narrow with parallel veins.
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The ovary is below the flower and, if pollinated, develops into a capsule-like fruit.
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Bowlesia
Bowlesia incana
CA Bloom Mar - Apr
Green, white flower
Five petals
Opposite leaves
Slopes
CA native
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Bracken Fern
Pteridium aquilinum var. pubescens
- Bracken Fern's overall shape is a large triangle, which is easy to spot.
- It's green in the spring and brown in the fall and winter.
- It grows to four feet tall.
- Widespread and common, it's found in shaded forest and on open hillsides.
- CA native
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Bracken Fern frond segments are long at the base and quite short near the top, creating an overall triangle shape.
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Segments have regular rounded lobes. The similar Sword Fern has a "thumb" near its midrib.
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New growth forms in a fiddlehead, and then opens up.
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Branching Phacelia
Phacelia ramosissima
CA Bloom May - Aug
Violet, white flower
Five petals
Alternate leaves
Coastal
CA native
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Brass Buttons
Cotula coronopifolia
CA Bloom May - Oct
Green, yellow flower
Tiny petals
Alternate leaves
Not CA native Somewhat Invasive
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Broad Leaf Filaree
Erodium botrys
- CA Bloom Feb - May
- Many wild geraniums share this flower's lavender color.
- Leaves are hairy and fairly wide.
- Fruit beaks grow over 4 inches long!
- Common in clay or gravel soil.
- Not CA native.
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Small flowers have five overlapping lavender petals, purple radiating lines, and yellow center.
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Wide leaves have a strong central vein. Edges have rounded lobes of varying sizes.
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Fruits are topped with a pointed beak up to 4" tall!
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Bulrush
Scirpus microcarpus
CA Bloom May - Jun
CA native
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Bur Chevril
Anthriscus caucalis
- Height 2 - 3 ft.
- CA Bloom Mar - May
- White flower
- Five petals
- Alternate leaves
- Disturbed
- Not CA native
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California Aster
Corethrogyne filaginifolia
CA Bloom Jun - Oct
Pink, violet, white flower
Many petals
Alternate leaves
Dunes coastal
CA native
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California Bay Laurel
Umbellularia californica
- CA Bloom Nov - May
- Height to 60 feet.
- The foliage of this classic California tree smells like bay leaves.
- Clusters of small flowers grow at the end of branches where new leaves emerge.
- Flowers turn into a plump 1 inch fruit resembling avocados, to which the tree is related.
- CA Native - endemic to the California Floristic Province.
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Leaves are fairly narrow, with a central vein and smooth edges, ending in a point. They have a leathery feel, and a spicy smell when crushed.
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Green fruit turns purple when mature. Leathery skin covers oily flesh that surrounds a pit (similar to avocado).
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Bay Laurels can grow to be substantial trees, thickly covered with their spicy-smelling leaves.
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California Blackberry
Rubus ursinus
- Height 3 - 6 ft.
- CA Bloom Feb - May
- This shrub forms an impenetrable thicket of branches, full of narrow prickles.
- You'll notice bright white flowers with many stamens.
- Found in canyons, coastal stream banks and disturbed areas
- CA native
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Separate petals, with green leafy sepals in between. This male flower has many stamens.
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Prickles are short, narrow, and plentiful. Himalayan Blackberry has wider, longer, and less densely-packed prickles.
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Red fruit turns black with maturity. Leaves in 3s, coarsely toothed, are hairy and have spines. Veins are indented on the leaves.
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California Brome
Bromus sitchensis var. carinatus
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Spikelets attach to the stem on branches. Glumes are short, revealing 5-10 florets above them.
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Florets form a flat, woven pattern, each with a 1/2" awn.
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Long leaves and inflorescences give this a classic bunch grass look.
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California Buckeye
Aesculus californica
- Height 12 - 40 ft.
- CA Bloom May - Jul
- Buckeye trees are conspicuous from afar; pale green leaves in early spring, full of flowers in early summer, and bare-branched well before other trees lose their leaves in the fall.
- Each aromatic flower has 4 pink or white petals and long stamens.
- The fruit resembles a buck's eye - brown and about 2 inches across.
- CA native
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Buckeye trees become covered with columns of sweet-smelling flowers.
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5-part compound leaves are palmate (shaped like a hand). Leaf edges are finely-toothed and bud in early February.
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Trees in the open form a dome shape, often growing 40 feet tall and 40 feet wide. They can live 250 years.
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California Burclover
Medicago polymorpha
- CA Bloom Feb - Jun
- This is not a true clover but rather a close relative of Alfalfa, in the Medicago genus.
- Look for slender-toothed stipules that encircle the stem where stalks meet it.
- Not CA native
- Somewhat Invasive
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3 or 4 yellow pea flowers cluster at the end of a long stalk. Leaflets have serrated edges.
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Burclover tends to run along the ground. The 3 clover-like leaflets are separate from one another. Flowers, fruits and leaves are on stalks.
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Pollinated ovules enlarge into tightly coiled pea pods with burs that stick out. The burs catch on passing animals, distributing the seeds to new areas.
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California Buttercup
Ranunculus californicus
- Height 6 in. - 2 ft.
- CA Bloom Feb - May
- This bright yellow flower is 1" across, with 7 to 22 shiny petals.
- Buttercups flower in early spring, and die back (including the leaves) in the summer.
- Found on coastal bluffs, grassland, woodland and moist meadows.
- CA native
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The buttercup looks like butter, with 7 to 22 elliptic, overlapping, shiny yellow petals.
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Each buttercup flower gets its own stalk. The center is a half sphere of packed green pistils, surrounded by dozens of yellow stamens.
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Long-stalked basal leaves have 3 deeply- lobed leaflets. Leaves on the flower stems have narrow divisions.
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California Chicory
Rafinesquia californica
- CA Bloom Apr - Jul
- One of two chicories in California - this one is white and native.
- It often has many short branches at the top, each tipped with a flower head.
- It's an early bloomer after a fire, growing particularly well near burned wood.
- Found in open areas.
- CA native
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About 20 rays form this white flower head which often shows a yellow center. When it goes to seed it forms an open, fluffy sphere.
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Below the head, ray flowers are purple marked. Long, pointed phyllaries are surrounded by a calyculus of short triangular bracts.
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Greyish green leaves have irregular lobes. A few smaller, clasping leaves decorate the stem, which branches to several single flower heads at the top.
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California Cottonrose
Logfia filaginoides
CA Bloom Mar - Jun
Green flower
Tiny petals
Alternate leaves
CA native
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California Everlasting
Pseudognaphalium californicum
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Each tiny pineapple-shaped flower head is wrapped in white papery phyllaries and contains over 100 minute yellow flowers.
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Leaves are narrow and pointed, growing to 4 inches long. They're smaller higher on the stem.
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Branching stems grow erect, each topped with whitish flower heads.
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California Fuchsia
Epilobium canum ssp. canum
CA Bloom Jun - Oct
Orange, red flower
Four petals
Alternate, opposite leaves
CA native
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California Goldenbush
Ericameria ericoides
- CA Bloom Sep - Nov
- Hundreds of small bright yellow flowers make this plant easy to spot.
- Narrow, short bunches of leaves along the stem.
- Makes a bright display on beaches in the fall, contrasting with red succulents.
- CA native
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Bright yellow composite flowers.
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Short thin leaves in groups along the stem.
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Covers large swaths of coastal beaches, making a big yellow display in the fall.
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California Horkelia
Horkelia californica
CA Bloom Apr - Jul
White flower
Five petals
Alternate, basal leaves
CA native
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California Lace Fern
Aspidotis californica
Fern
Slopes
CA native
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California Mustard
Caulanthus lasiophyllus
- CA Bloom Mar - Jun
- Flowers with 4 widely-separated petals mark this as a Mustard Family plant.
- It's smaller in stature than our vigorous non-native mustards.
- CA native
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Compared to our non-native mustards, California Mustard has fewer, smaller, generally white flowers.
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Seed pods are quite narrow and long.
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The whole plant gives a linear apearance.
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California Orobanche
Aphyllon californicum
Flower
Brown, orange, pink, violet, yellow flower
Five, irreg petals
Coastal
CA native
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California Poppy
Eschscholzia californica
- CA Bloom Feb - Sep
- Height to 18 inches tall.
- Flowers have four large overlapping petals. They're orange most places, but usually yellow with an orange center along the coast.
- CA native, and the state flower
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Thin orange petals overlap each other. Notice the sheath covering the young bud. Petals close at night and open in the morning.
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Leaves are grey-green and are much divided. The round flat base just below the petals is distinctive and edged in rose-pink.
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Across the state, California Poppies fill grassy areas with an orange display from April to July.
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California Sheepburr
Acaena californica
CA Bloom Mar - May
Green, red flower
Tiny petals
Alternate, basal leaves
CA native
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California Sycamore
Platanus racemosa
CA Bloom Feb - May
Alternate leaves
Streambanks
CA native
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California Wild Rose
Rosa californica
- CA Bloom May - Aug
- This shrub grows in thickets to 6 feet tall, with large, recurved prickles.
- Pink flowers, up to 2" across, open up flat at the end of branches.
- The fruit is a rose hip with leafy material coming out the top.
- It's common and widespread, especially in moist areas.
- Similar plants.
- CA native. Native only to the California Floristic Province.
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This fragrant rose flower has a single layer of five floppy petals. They surround dozens of yellow-tipped stamens.
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Compound leaves have 5 to 7 leaflets. Each pollinated flower creates one red rose hip, with left-over flower sepals protruding from the end.
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Prickles grow out from the stem; large, flat and often curved.
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Callalily
Zantedeschia aethiopica
CA Bloom Mar - Jun
Orange, white, yellow flower
Irreg petals
Basal leaves
Not CA native Somewhat Invasive
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Canyon Gooseberry
Ribes menziesii var. menziesii
- CA Bloom Jan - Apr
- Gooseberries and Currants are small shrubs with beautiful flowers and berries.
- Canyon Gooseberry grows about 6 feet tall, with moderately-spaced thin stems full of prickles.
- Beautiful hanging flowers develop into purple gooseberries.
- CA Native
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Leaves are hairy and soft, and remind me of small (less than 2" across) maple leaves.
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The flower has purple sepals that fold backwards, short white petals that hang down, and stamens that stick out the bottom.
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Thin prickles along the stem make this a Gooseberry. Currants look similar but don't have prickles.
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Cape Ivy
Delairea odorata
CA Bloom Nov - Mar
Yellow flower
Tiny petals
Alternate leaves
Not CA native Highly Invasive
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Carmel Ceanothus
Ceanothus thyrsiflorus var. griseus
- Height 1 - 7 ft.
- CA Bloom Mar - May
- This variety of Blue Blossom is a mounding form, adapted to wind, fog and salt, that grows on coastal bluffs.
- It has dense clusters of deep blue flowers on a full coat of dark green leaves.
- CA native
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Alternate, evergreen, ribbed leaves are wider towards the base. Edges are slightly serrated and sometimes roll under.
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Flower clusters are blue or purple, with yellow anthers sticking out.
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Found on open slopes along the coast. Does well in salt spray.
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Chain Fern
Woodwardia fimbriata
- Chain Fern is easy to recognize. You'll always find it near (or in) water and it's huge.
- Fronds are flat, 20 inches wide and grow over 6 feet long.
- The underside often shows chains of large reproductive sori in two rows.
- Found near streams or seeps.
- CA native.
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Fronds are flat and smooth-edged, and form a regular geometrical pattern. They grow over 6 feet long.
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If you turn the frond over you'll sometimes find long chains of tan sori, a velvety substance containing spores for the next generation.
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Chain fern loves water and shade. It's bigger than most other ferns.
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Chaparral Currant
Ribes malvaceum var. malvaceum
CA Bloom Dec - Mar
Pink, white flower
Five petals
Alternate leaves
CA native
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Checker Bloom
Sidalcea malviflora
- CA Bloom May - Aug
- Flower petals pink, strongly veined, squared off at the end, 1/2" to 1" long each.
- A perennial flower, often with a woody base.
- Leaves vary greatly, with basal leaves fairly round and upper leaves deeply cut.
- Found in grasslands, woodlands and scrub to 7,500 feet.
- CA native
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Five pink petals with radiating lines on each petal.
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Basal leaves round and not deeply cut.
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Deeply cut leaves.
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Cheeseweed
Malva parviflora
CA Bloom Mar - Oct
Pink, violet, white flower
Five petals
Alternate leaves
Disturbed
Not CA native
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Chia Sage
Salvia columbariae
- CA Bloom Mar - June
- I love spotting a Chia, with several spherical dark-blue flower clusters decorating a single stem.
- The leaves are distinctive - rough, hairy and deeply lobed.
- Chia seeds are an important food for birds, reptiles and mammals, including us.
- CA native
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Look for dark-blue mint flowers forming tight whorls around a four-sided stem.
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Mint flowers have a flat upper lip and and an extended, decorated lower lip.
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Chia Sage can grow in huge colonies, turning sandy hillsides purple.
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Chickweed
Stellaria media
- CA Bloom Feb - Sep
- This low-lying plant forms green mats with distinctive white flowers.
- Each petal is deeply divided, making a "mouse ears" effect.
- Opposite leaves have obvious veins.
- Found in disturbed areas in woodlands and meadows.
- Not CA native
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5 deeply lobed white petals often look like 10. Green pointed sepals between the petals.
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Opposite leaves are oval and come to a point.
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Grows to a foot or so. Lies along the ground in dense mats.
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Climbing Bedstraw
Galium porrigens
- Height to 5 ft.
- CA Bloom Feb - Apr
- Climbing Bedstraw loves to climb, using prickly hairs along its stem and leaves.
- It has whorls of four leaves, regularly spaced along the stem.
- Bedstraw grows from a woody base, creating new vine-like stems each season.
- Found among shrubs in chaparral and forest.
- CA native. Found only in California and nearby.
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Look for whorled leaves in groups of 4, small yellow flowers with 4 petals, a square stem, and white berries.
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Petals are only 1/2" long, but flowers are even smaller, about 1/10" across.
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Flowers are tiny but showy, with red and yellow parts.
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