Claytonia multiscapa

Rydberg

Fl. Rocky Mts., 263, 1061. 1917.

Common names: Rydberg’s spring beauty
Illustrated
Synonyms: Claytonia czukczorum Volkova Claytonia lanceolata var. flava (A. Nelson) C. L. Hitchcock Claytonia lanceolata var. multiscapa (Rydberg) C. L. Hitchcock Claytonia lanceolata var. pacifica McNeill Claytonia tuberosa var. czukczorum (Volkova) Hultén
Treatment appears in FNA Volume 4. Treatment on page 470. Mentioned on page 466, 469.

Plants perennial, with globose tubers 10–30 mm diam.; periderm 1–5 mm. Stems 10–30 cm. Leaves: basal leaves sometimes absent, petiolate, blades linear to narrowly lanceolate, 1–8 × 0.2–1.3 cm, apex acute; cauline leaves sessile, blade linear or linear-lanceolate, 2–10 cm, distinctly tapered. Inflorescences multibracteate; proximalmost bracts leaflike, inserted proximal to pedicels of proximalmost cluster of flowers, distal bracts reduced to membranous scales, rarely with 1 bract. Flowers 8–14 mm diam.; sepals 3–5 mm; petals white with yellow spots at base, creamy white, or rich yellow to yellow-orange, 8–10 mm; ovules 6. Seeds 1–2 mm diam., shiny and smooth to minutely tuberculate; elaiosome 1 mm or less. 2n = 16.


Phenology: Flowering May–Aug.
Habitat: Moist to dry grasslands and montane coniferous forests, often in swales with heavy, poorly drained clay soils in the south to wet, rocky tundra in the north
Elevation: 0-2000 m

Distribution

V4 934-distribution-map.gif

B.C., Alaska, Idaho, Mont., Wash., Wyo., Eurasia (Russia).

Discussion

Claytonia multiscapa has been the source of taxonomic differences of opinion. Local floras have treated the synonymous C. flava as a distinct species (e.g., R. D. Dorn 1977) while one regional flora (C. L. Hitchcock et al. 1955–1969, vol. 2) united it with C. lanceolata. It is treated here as a distinct species based on the electrophoretic and field work of J. S. Shelly (1998) and the author’s examination of type material.

Selected References

None.

Lower Taxa

None.
... more about "Claytonia multiscapa"
John M. Miller +
Rydberg +
Rydberg’s spring beauty +
B.C. +, Alaska +, Idaho +, Mont. +, Wash. +, Wyo. +  and Eurasia (Russia). +
0-2000 m +
Moist to dry grasslands and montane coniferous forests, often in swales with heavy, poorly drained clay soils in the south to wet, rocky tundra in the north +
Flowering May–Aug. +
Fl. Rocky Mts., +
Illustrated +
Claytonia czukczorum +, Claytonia lanceolata var. flava +, Claytonia lanceolata var. multiscapa +, Claytonia lanceolata var. pacifica +  and Claytonia tuberosa var. czukczorum +
Claytonia multiscapa +
Claytonia +
species +