Lasthenia leptalea

(A. Gray) Ornduff

Univ. Calif. Publ. Bot. 40: 63. 1966.

Common names: Salinas Valley goldfields
Endemic
Basionym: Burrielia leptalea A. Gray Proc. Amer. Acad. Arts 6: 546. 1865
Synonyms: Baeria leptalea (A. Gray) A. Gray
Treatment appears in FNA Volume 21. Treatment on page 340. Mentioned on page 337, 338.

Annuals, to 15 cm. Stems erect (peduncles sometimes sinuous), branched distally, glabrous proximally, villous distally. Leaves linear, 3–20 × 0.5–1 mm, (± fleshy) margins entire, faces sparsely hairy. Involucres obconic to campanulate, 4–6 mm. Phyllaries (± persistent) usually 4–6 (in 1 series), elliptic to ovate, glabrous but for hairy apices. Receptacles subulate, papillate, glabrous. Ray-florets 6–9; corolla laminae broadly elliptic, 2.5–5 mm. Anther appendages subulate. Cypselae gray, narrowly clavate, to 2 mm, sparsely hairy; pappi usually of 1–4 translucent, white to yellowish, subulate, aristate scales (sometimes 0 in some florets within heads). 2n = 16.


Phenology: Flowering Feb–May.
Habitat: Open areas of oak woodlands
Elevation: 0–700 m

Discussion

Lasthenia leptalea grows in southern Monterey and northern San Luis Obispo counties. Originally assigned by R. Ornduff (1966b) to sect. Burrielia, L. leptalea is morphologically similar to L. gracilis, from which it can be distinguished by its subulate anther appendages and phyllaries that are hairy only at their tips.

Selected References

None.

Lower Taxa

None.
... more about "Lasthenia leptalea"
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) Ornduff +
decurrent +
Burrielia leptalea +
compound +  and simple +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Salinas Valley goldfields +
yellow +  and orangish +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
pappose +  and epappose +
4 +  and 18 +
papillate +
fertile +  and bisexual +
fertile +  and bisexual +
0–700 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Open areas of oak woodlands +
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 />) +
obconic;campanulate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
sessile +  and petiolate +
3mm;20mm +
toothed;entire +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
papillate +
deltate +
2-carpellate +
white +  and yellowish +
persistent +
of 1 +  and 12+ aristate +
subulate +
Flowering Feb–May. +
scarious-margined +
weakly +  and flat +
Univ. Calif. Publ. Bot. +
aristate +
exalbuminous +
sprawling +, prostrate +  and decumbent +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Baeria leptalea +
Lasthenia leptalea +
Lasthenia sect. Amphiachaenia +
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 /> (15 cm150 mm <br />0.15 m <br />) +
shrub +  and subshrub +