Cistanthe tweedyi

(A. Gray) Hershkovitz

Phytologia 68: 268. 1990.

Basionym: Calandrinia tweedyi A. Gray Proc. Amer. Acad. Arts 22: 277. 1887
Synonyms: Lewisia tweedyi (A. Gray) B. L. Robinson Lewisiopsis tweedyi (A. Gray) Govaerts
Treatment appears in FNA Volume 4. Treatment on page 464. Mentioned on page 460, 461.
Revision as of 22:44, 16 December 2019 by FNA>Volume Importer

Plants perennial, taprooted; caudex short-branching. Stems 1 or more from each rosette, 10–20 cm, bracts scattered proximally, ovate-lanceolate, scarious. Leaves basal, in loose rosettes; blade elliptic-lanceolate to ovate or oblanceolate, narrowing to broad petiole, 6–15 cm. Inflorescences racemose, 1–5(–8)-flowered. Flowers pedicellate; sepals broadly ovate, 9–10 mm, scarious; petals 7–9(–12), salmon-pink to yellowish, rarely white, 25–40 mm; stamens 10–23, anther yellow; style present; stigmas 3; pedicel 20–60 mm. Capsules ovoid, 7–10 mm, dehiscence circumscissile near base; valves 3–4, splitting from base toward apex. Seeds 12–35, dark brownish red, suborbicular to reniform, 2 mm, not shiny, warty, strophiolate. 2n = 46, 92.


Phenology: Flowering May–Jul.
Habitat: Well-drained granitic talus slopes and ledges, often in ponderosa pine duff
Elevation: 600-2200 m

Discussion

Of conservation concern.

Lower Taxa

None.
... more about "Cistanthe tweedyi"
Walter A. Kelley +, John M. Miller +  and John G. Packer +
(A. Gray) Hershkovitz +
Calandrinia tweedyi +
B.C. +  and Wash. +
600-2200 m +
Well-drained granitic talus slopes and ledges, often in ponderosa pine duff +
Flowering May–Jul. +
hershkovitz1992a +
Lewisia tweedyi +  and Lewisiopsis tweedyi +
Cistanthe tweedyi +
Cistanthe +
species +