Flora of North America species comparison

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Lasthenia maritima

hairy goldfields, maritime goldfields, maritime or seaside goldfields, seaside goldfields
Habit Annuals, to 25 cm (herbage not sweetly scented).
Stems

usually prostrate or decumbent, rarely erect, branched proximally, glabrous or hairy at nodes and distally.
Leaves

linear to oblanceolate, 10–90 × 2–12 mm, (fleshy) margins entire or lobed, faces glabrous.
Involucres

hemispheric, 4–7 mm.
Receptacles

conic, muricate, glabrous.
Ray florets

7–12; (corollas light to golden yellow) laminae oblong, 1–3 mm.
Phyllaries

6–14, lanceolate to ovate, hairy (especially at margins and midribs).
Cypselae

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.
Anther

appendages ± oblong, obtuse (style apices ± deltate, glabrous or with apical tufts of hairs and subapical fringes of shorter hairs).
2n

= 8.

Lasthenia maritima
Phenology Flowering May–Jul.
Habitat Seabird roosting sites, coastal headlands, offshore rocks, islands
Elevation 0–100 m (0–300 ft)
Distribution
from FNA
CA; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
Discussion

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.)
Source FNA vol. 21, p. 347.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Baeriinae > Lasthenia > sect. Ptilomeris
Sibling taxa
L. burkei, L. californica, L. chrysantha, L. conjugens, L. coronaria, L. debilis, L. ferrisiae, L. fremontii, L. glaberrima, L. glabrata, L. gracilis, L. leptalea, L. microglossa, L. minor, L. ornduffii, L. platycarpha
Synonyms Burrielia maritima, Baeria maritima, Baeria minor subsp. maritima, L. minor subsp. maritima
Name authority (A. Gray) M. C. Vasey: Madroño 32: 139. (1985)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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