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.

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
... 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 +
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 +
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 +, 4mm +  and 15mm +
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 +
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 +