Damasonium californicum

Torrey

in G. Bentham, Plantas Hartwegianas imprimis Mexicanas. 341. 1857.

IllustratedEndemic
Synonyms: Machaerocarpus californicus (Torrey) Small
Treatment appears in FNA Volume 22.

Herbs, to 35 cm. Leaves erect; petiole 3–15 cm; blade absent or narrowly lanceolate to ovate, 3–9 × 0.5–3 cm, margins entire. Inflorescences racemes, rarely panicles; scapes erect or ascending; bracts broadly ovate-lanceolate, thin, scarious. Flowers 12–22 mm wide; sepals persistent, green, oblong or ovate, somewhat hooded, 4–5 mm; petals white with yellow patch near base, rarely pink, broadly cuneate, rhombic, 6–10 mm, erose distally; stamens 2–3 mm, 2 in front of each petal; pistils 6–10 in single ring on receptacle; ovules 1; styles erect in anthesis, soon spreading radially, elongate, stout. Fruits horned by enlargement of style, ribbed on angles, with prominent angular shoulder and depressed flat faces, 0.5 × 3–5.5 mm; beak 3–6 mm.


Phenology: Flowering late summer.
Habitat: Vernal pools, margins of intermittent streams, or on mud
Elevation: 100–1700 m

Distribution

V22 98-distribution-map.jpg

Calif., Idaho, Nev., Oreg.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Damasonium californicum"
Robert R. Haynes +  and C. Barre Hellquist +
Torrey +
Calif. +, Idaho +, Nev. +  and Oreg. +
100–1700 m +
Vernal pools, margins of intermittent streams, or on mud +
Flowering late summer. +
in G. Bentham, Plantas Hartwegianas imprimis Mexicanas. +
Illustrated +  and Endemic +
Machaerocarpus californicus +
Damasonium californicum +
Damasonium +
species +