Anisocarpus Nutt.

Last Addition: July 10, 1999.  Each "thumbnail" image below is linked to a larger photograph.

Anisocarpus includes two perennial species with well-distributed cauline leaves and radiate flowering heads with spherical to ellipsoid involucres. Plants 1-6 dm high.   Heads (at least some of them) radiate; phyllaries 0-15, each enfolding a ray ovary; receptacular chaff scales in a single series between ray and disk florets, more or less fused or fused only at base; ray florets (when present) pistillate, corollas yellow; disk florets 5-30, perfect or functionally staminate; corolla yellow; anthers yellow; ray cypselae (when present) 3-8 mm long; disk cypselae (when present) 5-9 mm long; ray pappus usually lacking or comprising a minute crown; disk pappus commonly of 5-8 or more scales or bristles.  The genus occurs from S British Columbia to Monterey County, California.  The chromosome number is n = 7 in both species.


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A. scabridus.  1 - Metamorphic-scree habitat on Anthony Peak, CA.   2 - Close-up of flowering head with one ray, note yellow anthers.
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A. madioides.  1 - Habit showing well-developed cauline leaves.  2 - Flowering heads, note yellow anthers and spherical involucre.

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