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 Flower bud Yarnell areaSue Smith |  Seedhead Yarnell areaSue Smith |  Leaf Yarnell areaSue Smith |  Plant - summer Yarnell areaSue Smith | | |
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Origin:
Native
Life Cycle:
Annual Similar Species: Rafinesquia californica, Calycoseris wrightii
General Desc:
Annual with white flower heads at the ends of a few stems. Stems are weak and usually grow among shrubs for support. Sap is milky.
Identification notes: Stems very branched, hairless, weak, zigzag, hollow, purplish; leaves pinnatifid, lobes acute, sessile; flower heads solitary, at tips of branchlets, with purplish midribs; ray flowers white within, rose-tinged without, 1/2 to 3/4 inch long.
Height:
To 20 inches
Habitat Description: Gravelly and sandy desert soils. Found on arid plains, mesas, and gentle slopes.
Plant Communities:
Desert Scrub, Interior Chaparral, Semidesert Grasslands
Elevation: 900 - 4500 feet
Color:
White
Shape:
Daisy or dandelion-like not in clusters
Tubular:
N
Flowering Period:
Feb - Jul
Description:
Ray flower heads to 1-1/2 inches wide. Flower head bracts about 1 inch long, main bracts narrow with purplish midribs; ray flowers white above, rose-tinged below, outer ray flowers 1/2 to 3/4 inch long. Ray flowers pinched together at their base.
Leaf Color:
Dark green
Leaf Type:
Simple
Leaf Shape:
Narrow
Leaf Margin:
Dissected
Leaf Attachment:
Basal and opposite
Leaves Clasp:
Y
Hairs:
No
Spines:
N
Leaf Description:
Leaves to 6 inches long at base but smaller on the upper stem, clasping or short-stemmed, sharply incised (dissected).
Fruit Color: Pale to dark gray
Fruit Type: Achene
Fruit Notes: Narrowly elliptic, weakly ribbed, tapered to a beak, topped with silvery white, papery bristles.
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