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

large-flower goldfields, Ornduff's goldfields, Ornduff's lasthenia

Habit Annuals, to 25 cm (herbage not sweetly scented). Perennials, 4–28 cm.
Stems

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

decumbent, branched proximally, ± hairy throughout, more so distally.

Leaves

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

linear to oblong, 6–40 × 1.8–5(–18) mm, (± fleshy) margins entire or with 3–5+ teeth, faces glabrous or ± hairy.

Involucres

hemispheric, 4–7 mm.

campanulate to depressed-hemispheric, 5–14 mm.

Receptacles

conic, muricate, glabrous.

conic, muricate, glabrous.

Ray florets

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

8–15;

laminae elliptic to oblong, 5–9(–13.4) mm.

Phyllaries

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

(± persistent) 8–14 (in 2 series), elliptic to ovate, ± 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.

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).

Anther

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

appendages deltate to sublanceolate.

2n

= 8.

= 32.

Lasthenia maritima

Lasthenia ornduffii

Phenology Flowering May–Jul. Flowering year round (mostly May–Aug).
Habitat Seabird roosting sites, coastal headlands, offshore rocks, islands Coastal bluffs
Elevation 0–100 m (0–300 ft) 0–500 m (0–1600 ft)
Distribution
from FNA
CA; OR; WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
OR
[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.)

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.

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

Source FNA vol. 21, p. 347. FNA vol. 21, p. 341.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Baeriinae > Lasthenia > sect. Ptilomeris Asteraceae > tribe Heliantheae > subtribe Baeriinae > Lasthenia > sect. Amphiachaenia
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. minor, L. platycarpha
Synonyms Burrielia maritima, Baeria maritima, Baeria minor subsp. maritima, L. minor subsp. maritima L. macrantha subsp. prisca
Name authority (A. Gray) M. C. Vasey: Madroño 32: 139. (1985) R. Chan: Madroño 48: 209. (2002)
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