Lewisia cotyledon

(S. Watson) B. L. Robinson in A. Gray et al.

in A. Gray et al., Syn. Fl. N. Amer. 1: 268. 1897.

Endemic
Basionym: Calandrinia cotyledon S. Watson Proc. Amer. Acad. Arts 20: 355. 1885
Synonyms: Oreobroma cotyledon (S. Watson) Howell
Treatment appears in FNA Volume 4. Treatment on page 480. Mentioned on page 477, 481.
Revision as of 09:45, 30 July 2020 by imported>Volume Importer
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Taproots gradually ramified distally. Stems ascending to suberect, 10–12 (–30) cm. Leaves: basal leaves evergreen, sessile or abruptly or gradually narrowed to broad petiole, blade oblanceolate, obovate, spatulate, or rarely ± linear or ± orbiculate, ± flattened, 3–14 cm, margins entire, crisped, or toothed, apex truncate, emarginate, retuse, or rounded; cauline leaves alternate, intergrading with bracts, blade oblong to ovate, 5–10 mm, margins glandular-toothed, apex acute to occasionally obtuse. Inflorescences dense, paniculate to subumbellate cymes, 10–50-flowered; bracts alternate or opposite proximally, 2 at each flowering node distally, obovate to lanceolate, 2–4 mm, margins glandular-toothed, apex acute. Flowers pedicellate, not disarticulate in fruit; sepals 2, suborbiculate to broadly ovate, 4–6 mm, herbaceous at anthesis, margins glandular-toothed, apex obtuse to truncate; petals 7–10, usually pink-purple with pale and darker stripes, less often white, cream with pink-orange stripes, ± orange, or yellow, oblanceolate, obovate, or spatulate, (8–) 12–20 mm; stamens 5–12; stigmas 2–4; pedicel 2–5 mm. Capsules 3–5 mm. Seeds 4–15, 1.5 mm, shiny, smooth.

Discussion

Varieties 3 (3 in the flora).

The varieties occasionally co-occur. Natural hybrids with Lewisia leeana are known (see discussion under 8. L. leeana).

Selected References

None.

Key

1 Basal leaf blade margins entire or slightly undulate, not toothed or crisped; petals (8-)12-14 mm Lewisia cotyledon var. cotyledon
1 Basal leaf blade margins strongly crisped or toothed; petals 12-20 mm > 2
2 Basal leaf blade margins toothed. Lewisia cotyledon var. heckneri
2 Basal leaf blade margins strongly crisped Lewisia cotyledon var. howellii

"broad" is not a number.

... more about "Lewisia cotyledon"
obtuse +  and truncate +
Mark A. Hershkovitz +  and Sean B. Hogan +
(S. Watson) B. L. Robinson in A. Gray et al. +
abruptly +  and sessile +
Calandrinia cotyledon +
occasionally dentate;crisped +
oblong +  and ovate +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
opposite +  and alternate +
persistent +
obovate +  and lanceolate +
subequal +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
circumscissile +
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 0.5 cm5 mm <br />0.005 m <br /> (?) +
enlarged +
gradually +  and sessile +
subumbellate +
Calif. +  and Oreg. +
disarticulate in fruit +  and persistent +
terminal +  and axillary +
exstipulate +  and secund +
subrosulate +, rosulate +, alternate +, subopposite +  and opposite +
cauline +  and basal +
glandular-toothed +, toothed +, crisped +  and entire +
scarious +  and herbaceous +
plurilocular +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
connate +  and distinct +
in A. Gray et al., Syn. Fl. N. Amer. +
estrophiolate +
black +  and brown +
1 +  and 50 +
sculptured +  and smooth +
sculpted +
1.5 cm15 mm <br />0.015 m <br /> (?) +, 0.4 cm4 mm <br />0.004 m <br /> (?) +  and 1.5 cm15 mm <br />0.015 m <br /> (?) +
persistent +
suborbiculate;broadly ovate +
subequal +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
distinct +  and scarcely connate and/or adnate +
5 +  and 12 +
branched +, simple +  and scapelike +
12 cm120 mm <br />0.12 m <br /> (30 cm300 mm <br />0.3 m <br />) +
deciduous +
ascending +  and suberect +
10 cm100 mm <br />0.1 m <br /> (12 cm120 mm <br />0.12 m <br />) +
2 +  and 4 +
Oreobroma cotyledon +
Lewisia cotyledon +
species +
fleshy +  and succulent +
15 +, 14 +, 13 +, 12 +, 11 +  and 10 +