Lasthenia minor

(de Candolle) Ornduff

Univ. Calif. Publ. Bot. 40: 80. 1966.

Common names: Coastal goldfields
Endemic
Basionym: Monolopia minor de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 6: 74. 1838
Synonyms: Baeria minor (de Candolle) Ferris
Treatment appears in FNA Volume 21. Treatment on page 347. Mentioned on page 336, 346.

Annuals, to 35 cm (herbage not sweetly scented). Stems erect, branched distally, ± woolly, especially distally. Leaves broadly to narrowly linear, 20–120 × 1–10 mm, margins entire or irregularly toothed or lobed (lobes to 1.5 mm), faces glabrous or villous. Involucres hemispheric, 4–6 mm. Phyllaries 7–14, oblong to ovate, hairy (especially at margins). Receptacles conic, muricate, glabrous. Ray-florets (8–) 13; (corollas light to golden yellow) laminae oblong, 4–8 mm. Anther appendages ovate or elliptic, acute (style apices ± deltate with apical tufts of hairs and subapical fringes of shorter hairs). Cypselae black, narrowly clavate, 2–2.5 mm, glabrous or hairy; pappi 0, or of 2–3 (–4) brown or white, lanceolate or subulate, aristate scales plus 4–5+ shorter, ± truncate, fimbriate scales. 2n = 8.


Phenology: Flowering Mar–Jun.
Habitat: Grasslands, coastal and inland
Elevation: 0–700 m

Discussion

Lasthenia minor is variable; coastal plants tend to have lower stature and broader leaves and tend to flower later in the year. Inland populations were once common in the San Joaquin Valley and are now harder to find as grasslands become cultivated, grazed, or built upon. Epappose plants are common and sometimes comprise entire populations.

Selected References

None.

Lower Taxa

None.
... more about "Lasthenia minor"
acute +, elliptic +  and ovate +
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) Ornduff +
decurrent +
Monolopia minor +
compound +  and simple +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Coastal goldfields +
yellow +  and orangish +
pappose +  and epappose +
hairy +  and glabrous +
4 +  and 18 +
papillate +
fertile +  and bisexual +
fertile +  and bisexual +
0–700 m +
villous +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Grasslands, coastal and inland +
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 +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
sessile +  and petiolate +
20mm;120mm +
pinnatifid;lobed +
0.1 cm1 mm <br />0.001 m <br /> (1 cm10 mm <br />0.01 m <br />) +
papillate +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
lobed +, toothed +  and entire +
2-carpellate +
white +  and brown +
persistent +
2 +  and 3 +
subulate +  and lanceolate +
Flowering Mar–Jun. +
scarious-margined +
weakly +  and flat +
7 +  and 14 +
Univ. Calif. Publ. Bot. +
4 +  and 5 +
fimbriate +  and aristate +
exalbuminous +
sprawling +, prostrate +  and decumbent +
appendaged +  and truncate +
with apical tufts +  and glabrous +
hirsutulous +  and glabrous +
papillate +
Baeria minor +
Lasthenia minor +
Lasthenia sect. Ptilomeris +
species +
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 /> (35 cm350 mm <br />0.35 m <br />) +
shrub +  and subshrub +