Lasthenia ornduffii

R. Chan

Madroño 48: 209. 2002.

Common names: Ornduff’s goldfields
EndemicConservation concern
Basionym: Lasthenia macrantha subsp. prisca Ornduff Madroño 21: 96. 1971
Treatment appears in FNA Volume 21. Treatment on page 341. Mentioned on page 337, 338, 340.

Perennials, 4–28 cm. Stems decumbent, branched proximally, ± hairy throughout, more so distally. Leaves linear to oblong, 6–40 × 1.8–5 (–18) mm, (± fleshy) margins entire or with 3–5+ teeth, faces glabrous or ± hairy. Involucres campanulate to depressed-hemispheric, 5–14 mm. Phyllaries (± persistent) 8–14 (in 2 series), elliptic to ovate, ± hairy. Receptacles conic, muricate, glabrous. Ray-florets 8–15; laminae elliptic to oblong, 5–9 (–13.4) mm. Anther appendages deltate to sublanceolate. Cypselae silver-gray, linear to narrowly clavate, to 4 mm, glabrous; pappi 0, or of 1–4 translucent, brown, subulate, aristate scales (often variable within heads). 2n = 32.


Phenology: Flowering year round (mostly May–Aug).
Habitat: Coastal bluffs
Elevation: 0–500 m

Discussion

Of conservation concern.

Lasthenia ornduffii is known only from six or so populations in grasslands along the immediate coast in Curry County. The plants are usually scapiform.

Selected References

None.

Lower Taxa

None.
... more about "Lasthenia ornduffii"
deltate +  and sublanceolate +
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† +
R. Chan +
decurrent +
Lasthenia macrantha subsp. prisca +
compound +  and simple +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Ornduff’s goldfields +
yellow +  and orangish +
pappose +  and epappose +
4 +  and 18 +
papillate +
linear +  and narrowly clavate +
fertile +  and bisexual +
fertile +  and bisexual +
0–500 m +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Coastal bluffs +
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 />) +
campanulate;depressed-hemispheric +
0.5 cm5 mm <br />0.005 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.34 cm13.4 mm <br />0.0134 m <br />) +
elliptic +  and oblong +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
sessile +  and petiolate +
0.5 cm5 mm <br />0.005 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
6mm;40mm +
linear;oblong +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
papillate +
deltate +
with 3-5+ teeth +  and entire +
2-carpellate +
persistent +
of 1 +  and 12+ aristate +
aristate +, truncate +, laciniate +  and fimbriate +
Flowering year round (mostly May–Aug). +
scarious-margined +
weakly +  and flat +
8 +  and 14 +
1 +  and 4 +
aristate +  and subulate +
exalbuminous +
Endemic +  and Conservation concern +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Undefined sect. Baeria +
Lasthenia ornduffii +
Lasthenia sect. Amphiachaenia +
species +
campanulate +
toothed +  and entire +
40 cm400 mm <br />0.4 m <br /> (60 cm600 mm <br />0.6 m <br />) +
4 cm40 mm <br />0.04 m <br /> (28 cm280 mm <br />0.28 m <br />) +
shrub +  and subshrub +