Lasthenia coronaria

(Nuttall) Ornduff

Univ. Calif. Publ. Bot. 40: 76. 1966.

Common names: Crowned or royal goldfields
Basionym: Ptilomeris coronaria Nuttall
Synonyms: Baeria californica (Hooker) K. L. Chambers Baeria coronaria (Nuttall) A. Gray
Treatment appears in FNA Volume 21. Treatment on page 347. Mentioned on page 346.
Revision as of 15:37, 18 September 2019 by FNA>Volume Importer

Annuals, to 40 cm (herbage sweetly scented). Stems erect, branched distally, usually glandular-puberulent (often with longer non-glandular hairs as well). Leaves linear, 15–60 × 0.5–5 mm, (not fleshy) margins entire or 1–2-pinnately lobed, faces hairy. Involucres hemispheric to obconic, 4–7 mm. Phyllaries 6–14, lanceolate to ovate, hairy. Receptacles conic, smooth, muricate, or pitted, hairy. Ray florets 6–15; (corollas yellow) laminae linear-oblong or oblong, 3–10 mm. Anther appendages elliptic, acute (style apices ± deltate with apical tufts of hairs and subapical fringes of shorter hairs). Cypselae black, linear to narrowly clavate, to 2.5 mm, hairy; pappi usually of 5–6+ lanceolate to ovate scales (1–5 uniaristate), sometimes of 4–5 subulate, aristate scales, or 0. 2n = 8, 10.


Phenology: Flowering Mar–May.
Habitat: Sunny, open grassy areas
Elevation: 0–700 m

Distribution

V21-867-distribution-map.gif

Calif., Mexico (Baja California).

Discussion

Pappus, head size, and branching pattern vary in Lasthenia coronaria. Two types of pappi are often found within a head and sometimes in different individuals of a population. The most distinctive feature of this species is its glandular herbage, which produces a characteristic sweet scent not present in any other lasthenia.

Selected References

None.

Lower Taxa

None.
... more about "Lasthenia coronaria"
Raymund Chan +  and Robert Ornduff† +
(Nuttall) Ornduff +
Ptilomeris coronaria +
Crowned or royal goldfields +
Calif. +  and Mexico (Baja California). +
0–700 m +
Sunny, open grassy areas +
Flowering Mar–May. +
Univ. Calif. Publ. Bot. +
Baeria californica +  and Baeria coronaria +
Lasthenia coronaria +
Lasthenia sect. Ptilomeris +
species +