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FNA | Family List | FNA Vol. 21 | Asteraceae | Lasthenia

1c. Lasthenia californica de Candolle ex Lindley subsp. macrantha (A. Gray) R. Chan, Madroño. 48: 208. 2002.

Perennial goldfields

Burrielia chrysostoma (Fischer & C. A. Meyer) Torrey & A. Gray var. macrantha A. Gray in War Department [U.S.], Pacif. Railr. Rep. 4(5): 106. 1857; Baeria macrantha (A. Gray) A. Gray; B. macrantha var. pauciaristata A. Gray; B. macrantha var. thalassophila J. T. Howell; Lasthenia macrantha (A. Gray) Greene

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.

Flowering year round (mostly May–Aug). Grasslands, dunes, woodlands, immediate coast; of conservation concern; 0–500 m; Calif.

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.


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