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.
deltate +  and sublanceolate +
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +, glomerate +  and corymbiform +
indeterminate +  and determinate +
Raymund Chan +  and Robert Ornduff† +
(A. Gray) R. Chan +
decurrent +
Burrielia chrysostoma var. macrantha +
compound +  and simple +
0.55 cm5.5 mm <br />0.0055 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2.8 cm28 mm <br />0.028 m <br /> (8.8 cm88 mm <br />0.088 m <br />) +
linear;oblong +
1.5mm;5.5mm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Perennial goldfields +
yellow +  and orangish +
pappose +  and epappose +
4 +  and 18 +
papillate +
linear +  and narrowly clavate +
fertile +  and bisexual +
fertile +  and bisexual +
0–500 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Grasslands, dunes, woodlands, immediate coast +
in more or less corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
campanulate;depressed-hemispheric +
0.9 cm9 mm <br />0.009 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
elliptic +  and oblong +
0.6 cm6 mm <br />0.006 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
sessile +  and petiolate +
0.55 cm5.5 mm <br />0.0055 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
8mm;210mm +
linear;oblanceolate or oblong +
0.1 cm1 mm <br />0.001 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
papillate +
deltate +
with 3-5+ teeth +  and entire +
2-carpellate +
persistent +
of 1 +  and 12+ aristate +
linear +  and subulate +
Flowering year round (mostly May–Aug). +
scarious-margined +
weakly +  and flat +
9 +  and 16 +
1 +  and 4 +
aristate +  and subulate +
exalbuminous +
Illustrated +  and Endemic +
decumbent +  and erect +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Baeria macrantha +, Baeria macrantha var. pauciaristata +, Baeria macrantha var. thalassophila +  and Lasthenia macrantha +
Lasthenia californica subsp. macrantha +
Lasthenia californica +
subspecies +
campanulate +
toothed +  and entire +
40 cm400 mm <br />0.4 m <br /> (60 cm600 mm <br />0.6 m <br />) +
0 cm0 mm <br />0 m <br /> (40 cm400 mm <br />0.4 m <br />) +
shrub +  and subshrub +