Lasthenia ferrisiae

Ornduff

Univ. Calif. Publ. Bot. 40: 74, figs. 4n,o, 23. 1966.

Common names: Ferris’s goldfields
Endemic
Treatment appears in FNA Volume 21. Treatment on page 343. Mentioned on page 342.

Annuals, to 40 cm. Stems erect, branched distally, glabrous or slightly hairy. Leaves linear, 10–80 × 1–3+ mm, margins entire, faces glabrous. Involucres hemispheric, 5–10 mm. Phyllaries 6–14, ± lanceolate (distinct tips ± deltate), glabrous but for apices. Receptacles ± conic, papillate, glabrous. Ray-florets 6–13; (corollas golden yellow to yellow) laminae ± oblong, 6–10 mm. Anther appendages deltate or broadly ovate. Cypselae black, ± clavate, ± flattened, 2–2.5 mm, margins ciliate (hairs whitish or stramineous, curved), faces ± hairy and papillate; pappi 0.2n = 14.


Phenology: Flowering Feb–May.
Habitat: Vernal pools and wet alkali flats
Elevation: 0–700 m

Discussion

R. Ornduff (1966b) suggested that Lasthenia ferrisiae may have originated from hybridization between L. chrysantha and L. glabrata subsp. coulteri; it has morphologic features that are intermediate between the two.

Selected References

None.

Lower Taxa

None.
... more about "Lasthenia ferrisiae"
ovate +  and deltate +
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† +
Ornduff +
decurrent +
Undefined sect. Hologymne +
compound +  and simple +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Ferris’s goldfields +
yellow +  and orangish +
hairy +  and glabrous +
4 +  and 18 +
papillate +
flattened +  and clavate +
fertile +  and bisexual +
fertile +  and bisexual +
0–700 m +
hairy +  and glabrous +
papillate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Vernal pools and wet alkali flats +
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 +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
sessile +  and petiolate +
10mm;80mm +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
papillate +
deltate +
2-carpellate +
persistent +
of 1 +  and 12+ aristate +
aristate +, truncate +, laciniate +  and fimbriate +
Flowering Feb–May. +
scarious-margined +
weakly +  and flat +
6 +  and 14 +
Univ. Calif. Publ. Bot. +
exalbuminous +
sprawling +, prostrate +  and decumbent +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined sect. Crockeria +
Lasthenia ferrisiae +
Lasthenia sect. Hologymne +
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 /> (40 cm400 mm <br />0.4 m <br />) +
shrub +  and subshrub +