Cistanthe tweedyi(synonym of Lewisiopsis tweedyi) |
Cistanthe monandra |
|
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Tweedy's bitterroot, Tweedy's lewisia, Tweedy's pussypaws |
common pussypaws |
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Habit | Plants perennial, taprooted; caudex short-branching. | Plants annual, taprooted. |
Stems | 1 or more from each rosette, 10–20 cm, bracts scattered proximally, ovate-lanceolate, scarious. |
2 or more from each rosette, spreading to decumbent, 1.5–18 cm. |
Leaves | basal, in loose rosettes; blade elliptic-lanceolate to ovate or oblanceolate, narrowing to broad petiole, 6–15 cm. |
basal and cauline; basal withering in fruit, in single, prostrate rosette, blade spatulate, 1–5 cm; cauline leaf blades spatulate, 1–2(–4) cm. |
Inflorescences | racemose, 1–5(–8)-flowered. |
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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. |
subsessile; sepals ovate, unequal, 1–2 mm, herbaceous, margins scarious; petals (2–)3, pink to reddish, 1–3 mm; stamens 1(–3), anther yellow; style absent; stigmas 2. |
Capsules | ovoid, 7–10 mm, dehiscence circumscissile near base; valves 3–4, splitting from base toward apex. |
ovoid to cylindric, somewhat falcate, 4–8 mm; valves 2. |
Seeds | 12–35, dark brownish red, suborbicular to reniform, 2 mm, not shiny, warty, strophiolate. |
4–10, black, orbicular, 0.3–0.7 mm, shiny. |
Inflor | -escences racemose or paniculate cymes, scorpioid when immature, loose. |
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2n | = 46, 92. |
= 44. |
Cistanthe tweedyi |
Cistanthe monandra |
|
Phenology | Flowering May–Jul. | Flowering Mar–Jun. |
Habitat | Well-drained granitic talus slopes and ledges, often in ponderosa pine duff | Open sandy areas, burns |
Elevation | 600-2200 m (2000-7200 ft) | 0-2100 m (0-6900 ft) |
Distribution |
WA; BC
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AZ; CA; NV; Mexico (Baja California)
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Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 4, p. 464. | FNA vol. 4, p. 462. |
Parent taxa | Portulacaceae > Cistanthe | Portulacaceae > Cistanthe |
Sibling taxa | ||
Synonyms | Calandrinia tweedyi, Lewisia tweedyi, Lewisiopsis tweedyi | Calyptridium monandrum |
Name authority | (A. Gray) Hershkovitz: Phytologia 68: 268. (1990) | (Nuttall) Hershkovitz: Phytologia 68: 267. (1990) |
Web links |