Lasthenia microglossa

(de Candolle) Greene

Man. Bot. San Francisco, 205. 1894.

Common names: Small-ray goldfields
Endemic
Basionym: Burrielia microglossa de Candolle in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 664. 1836
Synonyms: Baeria microglossa (de Candolle) Greene
Treatment appears in FNA Volume 21. Treatment on page 342. Mentioned on page 336, 337, 341.

Annuals, to 25 cm. Stems erect or sprawling, branched distally, villous, especially distally. Leaves linear or subulate, 15–80 × 1.5–2 (–4) mm, margins ± entire, faces moderately hairy. Involucres cylindric to narrowly obconic, 6–8.5 mm. Phyllaries 4, elliptic to oblong, hairy. Receptacles subulate, papillate, glabrous. Ray-florets 4; (corollas yellow) laminae lance-elliptic, (0–) 0.5–1 mm. Disc corolla lobes 4 (–5). Anther appendages subulate (without wartlike glands; style apices lanceolate, glabrous). Cypselae black, ± linear, to 5 mm, hairy; pappi 0, or of 1–4 brown or white, linear to ovate or lanceolate, aristate scales (sometimes variable within heads). 2n = 24.


Phenology: Flowering Mar–May.
Habitat: Shaded areas, woodlands, chaparral, deserts
Elevation: 0–1000 m

Discussion

Because the rays are inconspicuous, plants of the self-pollinating Lasthenia microglossa are easy to overlook. Besides growing in habitats similar to those occupied by L. debilis, L. microglossa is found also beneath chaparral shrubs and extends into desert areas, where it grows near rocks that may provide favorable shade and moisture conditions.

Selected References

None.

Lower Taxa

None.
... more about "Lasthenia microglossa"
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) Greene +
decurrent +
Burrielia microglossa +
compound +  and simple +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Small-ray goldfields +
yellow +  and orangish +
pappose +  and epappose +
4 +  and 18 +
papillate +
usually cylindric +  and obovoid +
fertile +  and bisexual +
fertile +  and bisexual +
0–1000 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Shaded areas, woodlands, chaparral, deserts +
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 />) +
cylindric;narrowly obconic +
0.6 cm6 mm <br />0.006 m <br /> (0.85 cm8.5 mm <br />0.0085 m <br />) +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
3-5 mm (?) +, 0 (?) +  and 1 (?) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
sessile +  and petiolate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
15mm;80mm +
subulate;linear +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
papillate +
deltate +
2-carpellate +
white +  and brown +
persistent +
1 +  and 4 +
linear +  and ovate or lanceolate +
Flowering Mar–May. +
scarious-margined +
weakly +  and flat +
Man. Bot. San Francisco, +
aristate +
exalbuminous +
sprawling +, prostrate +  and decumbent +
sprawling +  and erect +
appendaged +  and truncate +
deltate +  and lanceolate +
hirsutulous +  and glabrous +
papillate +
Baeria microglossa +
Lasthenia microglossa +
Lasthenia sect. Burrielia +
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 /> (25 cm250 mm <br />0.25 m <br />) +
shrub +  and subshrub +