Caulanthus major

(M. E. Jones) Payson

Ann. Missouri Bot. Gard. 9: 291. 1923.

Endemic
Basionym: Caulanthus crassicaulis var. major M. E. Jones Proc. Calif. Acad. Sci., ser. 2, 5: 623. 1895
Synonyms: Caulanthus major var. nevadensis Rollins Streptanthus major
Treatment appears in FNA Volume 7. Treatment on page 684. Mentioned on page 678.

Perennials; glabrous (or petioles and sepals pubescent). Stems erect or ascending, unbranched or branched distally, (hollow, sometimes slightly inflated), 2–10 dm. Basal leaves rosulate; petiole 0.5–9 cm; blade obovate to oblanceolate or elliptic (in outline), 1–14 cm × 5–25 mm, margins entire, dentate-sinuate, lyrate, or pinnatifid-runcinate. Cauline leaves (distalmost) shortly petiolate; blade linear to narrowly oblanceolate, margins entire. Racemes (densely flowered), without a terminal cluster of sterile flowers. Fruiting pedicels ascending, 1–6 mm. Flowers: sepals erect, (creamy white or purple), ovate to lanceolate, 6.5–9.5 × 2.7–4 mm, (equal, pubescent); petals purple, 11–17 mm, blade 4–7 × 1–1.7 mm, not or hardly crisped, claw oblanceolate, 7–13 × 2.5–3.5 mm; filaments tetradynamous, median pairs 5–7 mm, lateral pair 4–6 mm; anthers narrowly oblong, equal, 4–6 mm. Fruits erect to ascending, terete or slightly latiseptate, 4.5–12 cm × 2.2–2.8 mm; valves each with obscure midvein; ovules 46–58 per ovary; style obsolete or, rarely, to 0.4 mm; stigma slightly 2-lobed (lobes opposite valves). Seeds 2–3.5 × 1.3–1.8 mm. 2n = 28.


Phenology: Flowering May–Aug.
Habitat: Margin of montane forests, sagebrush, pinyon-juniper woodland
Elevation: 1500-3200 m

Distribution

V7 1176-distribution-map.gif

Calif., Nev., Oreg., Utah.

Discussion

Caulanthus major is found in eastern and southern California, Nevada, southeastern Oregon, and Utah.

Selected References

None.

Lower Taxa

None.
... more about "Caulanthus major"
Ihsan A. Al-Shehbaz +
(M. E. Jones) Payson +
Caulanthus crassicaulis var. major +
Calif. +, Nev. +, Oreg. +  and Utah. +
1500-3200 m +
Margin of montane forests, sagebrush, pinyon-juniper woodland +
Flowering May–Aug. +
Ann. Missouri Bot. Gard. +
Caulanthus major var. nevadensis +  and Streptanthus major +
Caulanthus major +
Caulanthus +
species +