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Lewisiopsis tweedyi

Tweedy's bitterroot, Tweedy's lewisia, Tweedy's pussypaws

seaside calandrinia, seaside cistanthe, seaside pussypaws

Habit Plants perennial, taprooted; caudex short-branching. Plants annual, taproot fleshy.
Stems

1 or more from each rosette, 10–20 cm, bracts scattered proximally, ovate-lanceolate, scarious.

spreading or ascending, 7–25 cm.

Leaves

basal, in loose rosettes;

blade elliptic-lanceolate to ovate or oblanceolate, narrowing to broad petiole, 6–15 cm.

cauline, not forming basal rosettes;

blade ovate to obovate or spatulate, flattened, 1–6 cm, glaucous.

Inflorescences

racemose, 1–5(–8)-flowered.

paniculate, loose, usually exceeding leaves.

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.

pedicellate;

sepals ovate-orbiculate, slightly unequal, 3–5 mm, herbaceous, glaucous;

petals disarticulate in fruit, usually 5, red-purple, 3–6 mm;

stamens usually 5, anther yellow;

style present;

stigmas 3;

pedicel 5–15 mm.

Capsules

ovoid, 7–10 mm, dehiscence circumscissile near base;

valves 3–4, splitting from base toward apex.

ovoid, usually longer than calyx at maturity, 5–8 mm;

valves 3.

Seeds

12–35, dark brownish red, suborbicular to reniform, 2 mm, not shiny, warty, strophiolate.

20–40, dull gray, ellipsoid, 0.5–1 mm, white-hairy at 30x, strophiolate.

2n

= 46, 92.

Cistanthe tweedyi

Cistanthe maritima

Phenology Flowering May–Jul. Flowering Mar–Apr.
Habitat Well-drained granitic talus slopes and ledges, often in ponderosa pine duff Sandy places near sea bluffs
Elevation 600-2200 m (2000-7200 ft) 0-300 m (0-1000 ft)
Distribution
from FNA
WA; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA; Mexico (Baja California)
[WildflowerSearch map]
[BONAP county map]
Discussion

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Cistanthe maritima is threatened in California by habitat destruction (J. P. Smith Jr. 1984).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 4, p. 464. FNA vol. 4, p. 462.
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. monandra, C. monosperma, C. parryi, C. pulchella, C. pygmaea, C. quadripetala, C. rosea, C. tweedyi, C. umbellata
Synonyms Calandrinia tweedyi, Lewisia tweedyi, Lewisiopsis tweedyi Calandrinia maritima
Name authority (A. Gray) Hershkovitz: Phytologia 68: 268. (1990) (Nuttall) Carolin ex Hershkovitz: Phytologia 68: 269. (1990)
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