Lasthenia californica subsp. californica

Common names: California goldfields
Treatment appears in FNA Volume 21. Treatment on page 339. Mentioned on page 338, 340.

Annuals. Roots not fleshy, not clustered. Stems usually erect, sometimes decumbent (especially in coastal forms), usually branched distally, sometimes proximally, ± hairy, usually more so distally. Leaves mostly cauline; blades linear to oblanceolate, 8–40 (–70) × 1–6 mm, ± fleshy in coastal forms, margins entire or with 3–5+ teeth (coastal forms), faces ± hairy. Involucres campanulate or hemispheric, 5–10 mm. Phyllaries persistent or falling with cypselae, 4–13 in 1 series, ovatelanceolate to oblong. Ray-florets 6–13; laminae oblong, 5–10 mm. Anther appendages deltate. Cypselae black to gray, ± clavate, to 3 mm, glabrous or hairy; pappi usually of 1–7 translucent (rarely opaque), brown (rarely white), linear to subulate, aristate scales (rarely variable or 0 within heads). 2n = 16, 32, 48.


Phenology: Flowering Feb–Jun.
Habitat: Mostly open sites (virtually every habitat but desert)
Elevation: 0–1500 m

Discussion

Subspecies californica sometimes occurs with other Lasthenia taxa. R. Ornduff (1993) included L. gracilis within his circumscription of subsp. californica. Coastal forms of subsp. californica tend to have shorter, wider, toothed, fleshy leaves and larger heads; they can be distinguished from L. gracilis by their translucent, brown, linear to subulate, aristate pappus scales and more northern distribution. Sympatric epappose plants of subsp. californica and L. gracilis are not easily distinguished morphologically; molecular markers (R. Chan et al. 2001) show them to be distinct taxa.

Selected References

None.

Lower Taxa

None.
48 +, 32 +  and 16 +
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† +
de Candolle ex Lindley +
decurrent +
Burrielia sect. Amphiachaenia +
compound +  and simple +
4 cm40 mm <br />0.04 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (4 cm40 mm <br />0.04 m <br />) +
linear;oblanceolate +
1mm;6mm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
California goldfields +
yellow +  and orangish +
pappose +  and epappose +
black +  and gray +
hairy +  and glabrous +
4 +  and 13 +
papillate +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and Oreg. +
0–1500 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Mostly open sites (virtually every habitat but desert) +
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 />) +
hemispheric;campanulate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 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 Feb–Jun. +
scarious-margined +
weakly +  and flat +
4 +  and 16 +
Edwards’s Bot. Reg. +
not fleshy +
1 +  and 7 +
aristate +, linear +  and subulate +
exalbuminous +
Illustrated +  and Endemic +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Baeria chrysostoma +, Lasthenia chrysostoma +  and Lasthenia hirsutula +
Lasthenia californica subsp. californica +
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 +