Lasthenia maritima
Lasthenia sect. Ptilomeris
hairy goldfields, maritime goldfields, maritime or seaside goldfields, seaside goldfields
usually prostrate or decumbent, rarely erect, branched proximally, glabrous or hairy at nodes and distally.
linear to oblanceolate, 10–90 × 2–12 mm, (fleshy) margins entire or lobed, faces glabrous.
usually pinnately lobed or pinnatifid, sometimes entire.
hemispheric, 4–7 mm.
hemispheric to obconic.
conic, muricate, glabrous.
conic, smooth, muricate, or pitted, glabrous or hairy.
7–12; (corollas light to golden yellow) laminae oblong, 1–3 mm.
yellow, laminae 1–10 mm, floral pigments remaining yellow in dilute aqueous alkali.
lobes 5;
anther appendages ovate to obovate;
style apices ± deltate, glabrous or with apical tufts of hairs and subapical fringes of shorter hairs.
6–14, lanceolate to ovate, hairy (especially at margins and midribs).
falling with cypselae, distinct.
gray, linear to narrowly clavate, (2–)2.5–3 mm, ± hairy;
pappi usually of 4–6(–12) brown, lanceolate or subulate, aristate scales plus 4–5+ shorter, laciniate scales, rarely 0.
1.5–3 mm;
epappose or pappose.
appendages ± oblong, obtuse (style apices ± deltate, glabrous or with apical tufts of hairs and subapical fringes of shorter hairs).
= 8.
= 8, 10.
Lasthenia maritima
Lasthenia sect. Ptilomeris
Lasthenia maritima is a self-pollinating, “guano endemic” of seabird nesting grounds. It is typically found on offshore islands and rocks from the Farallon Islands, California, to the northern tip of Vancouver Island, British Columbia and rarely occurs on the mainland.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Species 3 (3 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Stems usually glandular-puberulent (herbage sweetly scented) | L. coronaria |
1. Stems glabrous or hairy (at nodes and distally), or ± woolly (herbage not sweetly scented) | → 2 |
2. Ray laminae 1–3 mm; pappi 0, or of 4–6(–12) aristate scales plus 4–5+ shorter, laciniate scales; coastal and offshore; British Columbia, California, Oregon, Washington | L. maritima |
2. Ray laminae 4–8 mm; pappi 0, or of 2–3(–4) aristate scales plus 4–5+ shorter, fimbri-ate scales; coastal and inland; c California | L. minor |
- Local floras:
BC, 
CA, 
OR, 
WA - Local Web sites: CalFlora, CalPhotos,
Flora NW, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
