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 Leaves Frankie Coburn @http://swbiodiversity.org, Usage Rights Creative Commons Attribution-ShareAlike (CC BY-SA) |  Plants Anthony Mendoza @http://swbiodiversity.org, Usage Rights: Attribution-Non-Commercial (CC BY-NC) | | | | |
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Origin:
Native
Life Cycle:
Perennial
General Desc:
Herbaceous perennial growing upright to nearly 2 feet with wiry stems and slim branches. Yellow, fragrant, daisy-like flowers grow in many-branched, flat-topped clusters just above the bushy, smooth foliage of finely dissected fern-like green leaves.
Identification notes: 5 to 6 yellow ray flowers, 12 to 20 disc flowers; achenes not much longer than the bracts, narrow and tapering at both ends, often lack barbed awns; opposite leaves simple to twice pinnately lobed, margins smooth to coarsely toothed.
Height:
Up to 2 feet
Habitat Description: Found in moist soils near streams, in marshes, in seeps and springs.
Plant Communities:
Riparian
Elevation: Below 6500 feet
Color:
Yellow
Shape:
Daisy or dandelion-like in elongated clusters
Tubular:
N
Flowering Period:
Aug - Sep
Description:
A ring of 4 to 6 leaf-like bracts surround the daisy-like 2 inch wide flower head, 5 to 6 yellow petal-like ray flowers from 1/2 to 1-1/4 inches long which encircle 12 to 20 disc flowers in the center, each ranging from 1/8 to 1/4 inch long.
Leaf Color:
Green
Leaf Type:
Compound
Leaf Shape:
Pinnatifid
Leaf Margin:
Toothed
Leaf Attachment:
Opposite
Leaves Clasp:
N
Hairs:
No
Spines:
N
Leaf Description:
Leaves are thin, have stems, are 2 to 4-3/4 inches long, 1/16 to 1/4 inch wide. Overall leaf is triangular to lance-shaped and sometimes finely divided into thread-like segments. Leaf margins may be smooth or have sharp teeth pointing forward.
Fruit Color: Dark brown to blackish
Fruit Type: Achene
Fruit Notes: The fruit is dark brown to blackish, dry, flat, 1-seeded and does not split open at maturity. It is somewhat 4-sided in cross-section, has slightly grooved sides. It often lacks but sometimes has 2 upright to spreading, barbed bristles at its tip.
Seed Notes: 1 seed is produced in the fruit; the seed coat is attached to the thin, dry ovary wall (husk) by a short stalk so that the seed is easily freed from the husk.
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