Cistanthe tweedyi(synonym of Lewisiopsis tweedyi) |
Cistanthe pulchella |
|
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Tweedy's bitterroot, Tweedy's lewisia, Tweedy's pussypaws |
mariposa pussypaws |
|
Habit | Plants perennial, taprooted; caudex short-branching. | Plants annual, roots fibrous. |
Stems | 1 or more from each rosette, 10–20 cm, bracts scattered proximally, ovate-lanceolate, scarious. |
2 or more from each rosette, spreading to ascending, 2–7 cm. |
Leaves | basal, in loose rosettes; blade elliptic-lanceolate to ovate or oblanceolate, narrowing to broad petiole, 6–15 cm. |
basal and cauline; basal in single, prostrate rosette, blade spatulate, 0.5–2 cm; cauline leaves slightly smaller. |
Inflorescences | racemose, 1–5(–8)-flowered. |
paniculate cymes, open. |
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 orbiculate, 3–4 mm, scarious; petals 4, rose, 3 mm; stamens 3, anther yellow; style included, filiform; stigmas 2. |
Capsules | ovoid, 7–10 mm, dehiscence circumscissile near base; valves 3–4, splitting from base toward apex. |
globose, 1.5–2.5 mm; valves 2. |
Seeds | 12–35, dark brownish red, suborbicular to reniform, 2 mm, not shiny, warty, strophiolate. |
1–2, black, orbicular, 0.7–0.8 mm, shiny. |
2n | = 46, 92. |
|
Cistanthe tweedyi |
Cistanthe pulchella |
|
Phenology | Flowering May–Jul. | Flowering Apr–May. |
Habitat | Well-drained granitic talus slopes and ledges, often in ponderosa pine duff | Sandy soil in chaparral, oak woodlands |
Elevation | 600-2200 m (2000-7200 ft) | 400-1100 m (1300-3600 ft) |
Distribution |
WA; BC
|
CA |
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 4, p. 464. | FNA vol. 4, p. 463. |
Parent taxa | Portulacaceae > Cistanthe | Portulacaceae > Cistanthe |
Sibling taxa | ||
Synonyms | Calandrinia tweedyi, Lewisia tweedyi, Lewisiopsis tweedyi | Spraguea pulchella, Calyptridium pulchellum |
Name authority | (A. Gray) Hershkovitz: Phytologia 68: 268. (1990) | (Eastwood) Hershkovitz: Phytologia 68: 268. (1990) |
Web links |