Cistanthe tweedyi(synonym of Lewisiopsis tweedyi) |
Cistanthe parryi |
|
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Tweedy's bitterroot, Tweedy's lewisia, Tweedy's pussypaws |
Parry's pussypaws |
|
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 ascending, 2–11 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, 1–3 cm. |
Inflorescences | racemose, 1–5(–8)-flowered. |
paniculate or racemose scorpioid cymes, becoming secund, open to dense. |
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, orbiculate, or reniform, unequal, 2–5 mm, margins scarious; petals 3(–4), white or pinkish, 1.5–3 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, 3–7 mm; valves 2. |
Seeds | 12–35, dark brownish red, suborbicular to reniform, 2 mm, not shiny, warty, strophiolate. |
10–15, black, orbicular, 0.6–0.7 mm, shiny. |
2n | = 46, 92. |
= 44. |
Cistanthe tweedyi |
Cistanthe parryi |
|
Phenology | Flowering May–Jul. | Flowering Jun–Jul. |
Habitat | Well-drained granitic talus slopes and ledges, often in ponderosa pine duff | Open, sandy areas, chaparral, woodlands |
Elevation | 600-2200 m (2000-7200 ft) | 700-3400 m (2300-11200 ft) |
Distribution |
WA; BC
|
AZ; CA; Mexico (Baja California)
|
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Some authorities recognize varietal segregates in this species based on minor characters that appear to exhibit much variation from population to population; they are not treated in this account. (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 | Calyptridium parryi, Calyptridium parryi subsp. nevadense, Calyptridium parryi var. arizonicum, Calyptridium parryi var. nevadense |
Name authority | (A. Gray) Hershkovitz: Phytologia 68: 268. (1990) | (A. Gray) Hershkovitz: Phytologia 68: 268. (1990) |
Web links |