Flora of North America species comparison

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Lasthenia maritima

Lasthenia minor

hairy goldfields, maritime goldfields, maritime or seaside goldfields, seaside goldfields

coastal goldfields
Habit Annuals, to 25 cm (herbage not sweetly scented). Annuals, to 35 cm (herbage not sweetly scented).
Stems

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

erect, branched distally, ± woolly, especially distally.
Leaves

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

broadly to narrowly linear, 20–120 × 1–10 mm, margins entire or irregularly toothed or lobed (lobes to 1.5 mm), faces glabrous or villous.
Involucres

hemispheric, 4–7 mm.

hemispheric, 4–6 mm.
Receptacles

conic, muricate, glabrous.

conic, muricate, glabrous.
Ray florets

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

(8–)13; (corollas light to golden yellow) laminae oblong, 4–8 mm.
Phyllaries

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

7–14, oblong to ovate, hairy (especially at margins).
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.

black, narrowly clavate, 2–2.5 mm, glabrous or hairy;

pappi 0, or of 2–3(–4) brown or white, lanceolate or subulate, aristate scales plus 4–5+ shorter, ± truncate, fimbriate scales.
Anther

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

appendages ovate or elliptic, acute (style apices ± deltate with apical tufts of hairs and subapical fringes of shorter hairs).
2n

= 8.

= 8.

Lasthenia maritima

Lasthenia minor
Phenology Flowering May–Jul. Flowering Mar–Jun.
Habitat Seabird roosting sites, coastal headlands, offshore rocks, islands Grasslands, coastal and inland
Elevation 0–100 m (0–300 ft) 0–700 m (0–2300 ft)
Distribution
from FNA
CA; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[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.)

Lasthenia minor is variable; coastal plants tend to have lower stature and broader leaves and tend to flower later in the year. Inland populations were once common in the San Joaquin Valley and are now harder to find as grasslands become cultivated, grazed, or built upon. Epappose plants are common and sometimes comprise entire populations.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 347. FNA vol. 21, p. 347.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Baeriinae > Lasthenia > sect. Ptilomeris 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
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. maritima, L. microglossa, L. ornduffii, L. platycarpha
Synonyms Burrielia maritima, Baeria maritima, Baeria minor subsp. maritima, L. minor subsp. maritima Monolopia minor, Baeria minor
Name authority (A. Gray) M. C. Vasey: Madroño 32: 139. (1985) (de Candolle) Ornduff: Univ. Calif. Publ. Bot. 40: 80. (1966)
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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