Lasthenia maritima

(A. Gray) M. C. Vasey

Madroño 32: 139. 1985.

Common names: Maritime or seaside goldfields
Endemic
Basionym: Burrielia maritima A. Gray Proc. Amer. Acad. Arts. 7: 358. 1868
Synonyms: Baeria maritima (A. Gray) A. Gray Baeria minor subsp. maritima (A. Gray) Ferris Lasthenia minor subsp. maritima (A. Gray) Ornduff
Treatment appears in FNA Volume 21. Treatment on page 347. Mentioned on page 337, 346.

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. Phyllaries 6–14, lanceolate to ovate, hairy (especially at margins and midribs). Receptacles conic, muricate, glabrous. Ray-florets 7–12; (corollas light to golden yellow) laminae oblong, 1–3 mm. Anther appendages ± oblong, obtuse (style apices ± deltate, glabrous or with apical tufts of hairs and subapical fringes of shorter hairs). 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 0.2n = 8.


Phenology: Flowering May–Jul.
Habitat: Seabird roosting sites, coastal headlands, offshore rocks, islands
Elevation: 0–100 m

Distribution

V21-868-distribution-map.gif

B.C., Calif., Oreg., Wash.

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.

Selected References

None.

Lower Taxa

None.
... more about "Lasthenia maritima"
obtuse +  and oblong +
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
paniculiform +, glomerate +  and corymbiform +
indeterminate +  and determinate +
Raymund Chan +  and Robert Ornduff† +
(A. Gray) M. C. Vasey +
decurrent +
Burrielia maritima +
compound +  and simple +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
Maritime or seaside goldfields +
yellow +  and orangish +
pappose +  and epappose +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
4 +  and 18 +
papillate +
linear +  and narrowly clavate +
fertile +  and bisexual +
fertile +  and bisexual +
B.C. +, Calif. +, Oreg. +  and Wash. +
0–100 m +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Seabird roosting sites, coastal headlands, offshore rocks, islands +
in more or less corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
hemispheric +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
sessile +  and petiolate +
10mm;90mm +
linear;oblanceolate +
0.2 cm2 mm <br />0.002 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
papillate +
deltate +
dentate to pinnatifid or palmatifid +  and entire +
lobed +  and entire +
2-carpellate +
persistent +
of 1 +  and 12+ aristate +
subulate +  and lanceolate +
Flowering May–Jul. +
scarious-margined +
weakly +  and flat +
6 +  and 14 +
4 +  and 5 +
laciniate +  and aristate +
exalbuminous +
decumbent +  and prostrate +
appendaged +  and truncate +
with apical tufts +  and glabrous +
hirsutulous +  and glabrous +
papillate +
Baeria maritima +, Baeria minor subsp. maritima +  and Lasthenia minor subsp. maritima +
Lasthenia maritima +
Lasthenia sect. Ptilomeris +
species +
campanulate +
toothed +  and entire +
40 cm400 mm <br />0.4 m <br /> (60 cm600 mm <br />0.6 m <br />) +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
shrub +  and subshrub +