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 Leaves Arizona State University Vascular Plant Herbarium, Usage Rights: Non-Commercial (CC BY-NC) |  Plants Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA) | | | | |
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Origin:
Native
Life Cycle:
Annual
General Desc:
Small annual, 4 to 16 inches long; covered with stiff, stinging, white hairs; loosely branched, often growing in small bunches. Flowers in flat-topped clusters in which the central flowers open first, followed by the peripheral flowers.
Identification notes: Slender annual; leaves few, narrow, smooth margined, stiff, white, stinging hairs; flowers tiny, white in flat-topped clusters; sepals erect or spreading; nutlets 1 or 2, alike, margins rounded, not sharp, roughened, surpass or barely surpass the style.
Height:
4 to 16 inches
Habitat Description: Open, gravelly, occasionally sandy, slopes and washes, grasslands, scrublands, Joshua-tree woodlands.
Plant Communities:
Desert Scrub, Interior Chaparral
Elevation: 2000 - 4000 feet
Color:
White
Shape:
Regular in round clusters
Tubular:
Y
Flowering Period:
Mar - May
Description:
2 to 3 tiny flowers tightly constricted at base, converging but not fused, with spreading tips; tube up to 1/2 inch long; mid-vein thickened; appearing white, more so due to the stiff hairs; flat-topped flower clusters are dense to open.
Leaf Color:
Green
Leaf Type:
Simple
Leaf Shape:
Narrow
Leaf Margin:
Smooth
Leaf Attachment:
Basal,alternate and opposite
Leaves Clasp:
N
Hairs:
Leaves and stems
Spines:
N
Leaf Description:
Leaves few in number; simple, smooth, narrow and rounded at tip; covered with stiff, white, stinging hairs; basal leaves whorled, opposite near the base, becoming alternate as one moves up the stem.
Fruit Color: White or brown
Fruit Type: Nutlet
Fruit Notes: 1 to 2 narrow, egg-shaped and same sized nutlets; generally smooth, white or brown, granular; curved outward on the back, flat on the front, rounded on the sides.
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