Malacothrix coulteri
Snake's head desertdandelion, Snake's-head
1–6, ascending or erect, simple or branched proximally and distally, glaucous or glabrous.
proximal linear to obovate, sometimes pinnately lobed, not fleshy, ultimate margins entire or dentate, faces glabrous;
distal reduced (ovate to lanceolate, rarely pinnately lobed, bases clasping).
hemispheric, 10–22+ × 6–22+ mm.
densely bristly.
85–257;
corollas usually pale yellow, sometimes white, 8–12 mm;
outer ligules exserted 2–5 mm.
(25–)40–60+ in 4–6+ series, (midstripes usually reddish or purple) orbiculate to ovate, oblong, lance-oblong, or linear, unequal, hyaline margins 1–2.5 mm wide, faces glabrous.
0.
± prismatic, 1.6–3.2 mm, ribs extending beyond apices, 5 more prominent than others;
persistent pappi of 20–25+, blunt teeth plus 2–6 bristles.
70–100% 3-porate.
= 14.
Malacothrix coulteri
Variety cognata, indistinguishable in floral characters from var. coulteri and differing in cauline leaves parted almost to midribs, occurs at some mainland sites in southern California and has been collected on the Channel Islands. In California, Malacothrix coulteri grows in the San Joaquin Valley, central western areas, western Transverse Ranges, Peninsular Ranges, and Mojave Desert. In Arizona, it grows in the Sonoran Desert in the Santa Rita and Tucson mountains, and similar places.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
