Last Addition: December 5, 1999. Each "thumbnail" image below is linked to a larger photograph.
A monotypic genus of diminutive annual plants, common below 900 m elevation, ranging from Oregon through the California Floristic Province to Baja, Mexico. Plants 2.5-40 cm tall. Heads radiate, phyllaries 3-8, each tightly enveloping a ray ovary; receptacular chaff in one involucral-like series; ray florets pistillate, corollas yellow to red, slightly exceeding phyllaries; disk florets perfect, 6-35, corollas yellow to red; ray cypselae more or less cylindric; disk cypselae 4.5-8.5 mm long, 10-ribbed; ray pappus absent; disk pappus of 10 oblong, blunt scales in 2 series 3-6 mm and 6-11 mm long. The chromosome number is n = 8.
|A. mollis, blow-wives. 1 - Habit, 2 - Flowering head, 3 - Fruit.|
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