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.