Lasthenia californica subsp. macrantha

(A. Gray) R. Chan

Madroño 48: 208. 2002.

Common names: Perennial goldfields
Basionym: Burrielia chrysostoma var. macrantha A. Gray in War Department [U.S.], Pacif. Railr. Rep. 4(5): 106. 1857
Synonyms: Baeria macrantha (A. Gray) A. Gray Baeria macrantha var. pauciaristata A. Gray Baeria macrantha var. thalassophila J. T. Howell Lasthenia macrantha
Treatment appears in FNA Volume 21. Treatment on page 340. Mentioned on page 338.

Perennials (sometimes flowering first year; cespitose). Roots usually not fleshy or clustered. Stems decumbent, branched proximally, ± hairy. Leaves mostly basal; blades linear to oblong, 28–88 × 1.5–5.5(–15) mm, fleshy, margins entire or with 3–5+ teeth (ciliate), faces glabrous or ± hairy. Involucres campanulate to depressed-hemispheric, 9–14 mm. Phyllaries ± persistent, 9–16 in 2 series, elliptic to ovate. Ray florets 8–16; laminae elliptic to oblong, 6–18 mm. Anther appendages deltate to sublanceolate. Cypselae silver-gray, linear to narrowly clavate, to 4 mm, glabrous; pappi 0, or of 1–4 translucent, brown, subulate, aristate scales (sometimes variable within heads). 2n = 48.


Phenology: Flowering year round (mostly May–Aug).
Habitat: Grasslands, dunes, woodlands, immediate coast
Elevation: 0–500 m

Discussion

Of conservation concern.

Subspecies macrantha is morphologically similar to Lasthenia ornduffii; their ranges are allopatric. Plants of subsp. macrantha found in San Luis Obispo County may have fleshy roots approaching those of subsp. bakeri.

Selected References

None.

Lower Taxa

None.
Raymund Chan +  and Robert Ornduff† +
(A. Gray) R. Chan +
Burrielia chrysostoma var. macrantha +
Perennial goldfields +
0–500 m +
Grasslands, dunes, woodlands, immediate coast +
Flowering year round (mostly May–Aug). +
Illustrated +  and Endemic +
Baeria macrantha +, Baeria macrantha var. pauciaristata +, Baeria macrantha var. thalassophila +  and Lasthenia macrantha +
Lasthenia californica subsp. macrantha +
Lasthenia californica +
subspecies +