Malacothrix californica

de Candolle in A. P. de Candolle and A. L. P. P. de Candolle
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 7: 192. 1838.
Common names: California desertdandelion
Illustrated
Treatment appears in FNA Volume 19. Treatment on page 313. Mentioned on page 310, 311.

Annuals, 4–45 cm. Stems 1 (scapiform), erect or arcuate-ascending, mostly glabrous (shaggily piloso-hirsute proximally and at bases of heads). Cauline leaves: proximal oblanceolate to linear, pinnately lobed (lobes usually linear to filiform, sometimes broader), not fleshy, ultimate margins entire or dentate, faces usually shaggily piloso-hirsute (at least proximally), glabrescent; distal usually 0. Calyculi of 12–20, lanceolate to linear bractlets, hyaline margins 0.05–0.2 mm, abaxial faces shaggily piloso-hirsute to arachnose. Involucres (8–)10–15 × 5–6 mm. Phyllaries usually 20–26+ in 2-3+ series, (midstripes often reddish) lanceolate to lance-linear or subulate, unequal, hyaline margins 0.1–0.5 mm wide, abaxial faces (of outermost, at least) shaggily piloso-hirsute to arachnose (at least proximally). Receptacles sparsely bristly or glabrous. Florets 40–250; corollas usually yellow to pale yellow (often with abaxial reddish stripes), sometimes white, 16–20 mm; outer ligules exserted 11–13 mm. Cypselae ± prismatic, 2–3.4 mm, ribs extending to apices, 5 more prominent than others; persistent pappi of 12–15+, irregular, lance-deltate teeth plus (1–)2 bristles. Pollen 70–100% 3-porate. 2n = 14.


Phenology: Flowering Apr–Jun.
Habitat: Open sandy soil in grasslands, oak woodlands, chaparral, or desert margins
Elevation: 0–1700 m

Distribution

V19-464-distribution-map.gif

Calif., Mexico (Baja California).

Discussion

Malacothrix californica grows in the San Joaquin Valley, central western California, southwestern California, and the Mojave Desert.

Selected References

None.

Lower Taxa

None.

... more about "Malacothrix californica"
W. S. Davis +
de Candolle in A. P. de Candolle and A. L. P. P. de Candolle +
California desertdandelion +
Calif. +  and Mexico (Baja California). +
0–1700 m +
Open sandy soil in grasslands, oak woodlands, chaparral, or desert margins +
Flowering Apr–Jun. +
in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. +
Illustrated +
Undefined tribe Lactuceae +
Malacothrix californica +
Malacothrix +
species +