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Lewisiopsis tweedyi

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
from FNA
WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CA; Mexico (Baja California)
[WildflowerSearch map]
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
C. ambigua, C. maritima, C. monandra, C. monosperma, C. parryi, C. pulchella, C. pygmaea, C. quadripetala, C. rosea, C. tweedyi, C. umbellata
C. ambigua, C. maritima, C. monandra, C. monosperma, C. pulchella, C. pygmaea, C. quadripetala, C. rosea, C. tweedyi, C. umbellata
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)
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