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

small-Ray goldfields

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

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

erect or sprawling, branched distally, villous, especially distally.

Leaves

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

linear or subulate, 15–80 × 1.5–2(–4) mm, margins ± entire, faces moderately hairy.

Involucres

hemispheric, 4–7 mm.

cylindric to narrowly obconic, 6–8.5 mm.

Receptacles

conic, muricate, glabrous.

subulate, papillate, glabrous.

Ray florets

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

4; (corollas yellow) laminae lance-elliptic, (0–)0.5–1 mm.

Disc corolla

lobes 4(–5).

Phyllaries

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

4, elliptic to oblong, hairy.

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, ± linear, to 5 mm, hairy;

pappi 0, or of 1–4 brown or white, linear to ovate or lanceolate, aristate scales (sometimes variable within heads).

Anther

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

appendages subulate (without wartlike glands; style apices lanceolate, glabrous).

2n

= 8.

= 24.

Lasthenia maritima

Lasthenia microglossa

Phenology Flowering May–Jul. Flowering Mar–May.
Habitat Seabird roosting sites, coastal headlands, offshore rocks, islands Shaded areas, woodlands, chaparral, deserts
Elevation 0–100 m (0–300 ft) 0–1000 m (0–3300 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.)

Because the rays are inconspicuous, plants of the self-pollinating Lasthenia microglossa are easy to overlook. Besides growing in habitats similar to those occupied by L. debilis, L. microglossa is found also beneath chaparral shrubs and extends into desert areas, where it grows near rocks that may provide favorable shade and moisture conditions.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 21, p. 347. FNA vol. 21, p. 342.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Baeriinae > Lasthenia > sect. Ptilomeris Asteraceae > tribe Heliantheae > subtribe Baeriinae > Lasthenia > sect. Burrielia
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. minor, L. ornduffii, L. platycarpha
Synonyms Burrielia maritima, Baeria maritima, Baeria minor subsp. maritima, L. minor subsp. maritima Burrielia microglossa, Baeria microglossa
Name authority (A. Gray) M. C. Vasey: Madroño 32: 139. (1985) (de Candolle) Greene: Man. Bot. San Francisco, 205. (1894)
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