Cistanthe tweedyi

(A. Gray) Hershkovitz

Phytologia 68: 268. 1990.

EndemicConservation concern
Basionym: Calandrinia tweedyi A. Gray Proc. Amer. Acad. Arts 22: 277. 1887
Synonyms: Lewisia tweedyi (A. Gray) B. L. Robinson Lewisiopsis tweedyi (A. Gray) Govaerts
Treatment appears in FNA Volume 4. Treatment on page 464. Mentioned on page 460, 461.
Revision as of 09:44, 30 July 2020 by imported>Volume Importer
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Plants perennial, taprooted; caudex short-branching. Stems 1 or more from each rosette, 10–20 cm, bracts scattered proximally, ovatelanceolate, scarious. Leaves basal, in loose rosettes; blade elliptic-lanceolate to ovate or oblanceolate, narrowing to broad petiole, 6–15 cm. Inflorescences racemose, 1–5 (–8) -flowered. 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. Capsules ovoid, 7–10 mm, dehiscence circumscissile near base; valves 3–4, splitting from base toward apex. Seeds 12–35, dark brownish red, suborbicular to reniform, 2 mm, not shiny, warty, strophiolate. 2n = 46, 92.


Phenology: Flowering May–Jul.
Habitat: Well-drained granitic talus slopes and ledges, often in ponderosa pine duff
Elevation: 600-2200 m

Discussion

Of conservation concern.

Lower Taxa

None.

"narrowing" is not a number. "broad" is not a number.

... more about "Cistanthe tweedyi"
Walter A. Kelley +, John M. Miller +  and John G. Packer +
(A. Gray) Hershkovitz +
Calandrinia tweedyi +
occasionally dentate;crisped +
elliptic-lanceolate +  and ovate or oblanceolate +
6 cm60 mm <br />0.06 m <br /> (15 cm150 mm <br />0.15 m <br />) +
subtending +
ovatelanceolate +
unequal +
circumscissile +
0.7 cm7 mm <br />0.007 m <br /> (?) +  and 1 cm10 mm <br />0.01 m <br /> (?) +
short-branching +
B.C. +  and Wash. +
600-2200 m +
Well-drained granitic talus slopes and ledges, often in ponderosa pine duff +
not articulate +
subrosulate +, rosulate +, alternate +, subopposite +  and opposite +
not reflexed +
plurilocular +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
white +, salmon-pink +  and yellowish +
distinct +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Flowering May–Jul. +
hershkovitz1992a +
fibrous +  and fleshy +
strophiolate +
red +  and dark brownish +
12 +  and 35 +
sculptured +  and smooth +
suborbicular +  and reniform +
2 cm20 mm <br />0.02 m <br /> (?) +
persistent +
distinct +
unequal +
0.9 cm9 mm <br />0.009 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Endemic +  and Conservation concern +
10 +  and 23 +
branched +  and simple +
decumbent +  and erect +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
Lewisia tweedyi +  and Lewisiopsis tweedyi +
Cistanthe tweedyi +
Cistanthe +
species +
not deciduous +
3 (?) +  and 4 (?) +