Flora of North America species comparison

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Sedella pumila

Sierra mock stonecrop
Habit Plants 0.3–1.7 dm, usually with erect branches ± equaling main axis, or branches spreading; hypocotyl 0.5–2.5 cm.
Stems

10–25-noded.
Leaf

blades 0.4–0.7 × 0.1–0.3 cm.
Flowers

4–10 mm diam.;

calyx base tapering to pedicel;

petals widely spreading, erect in fruit, straw colored to bright yellow, commonly red-marked on keel, elliptic to lanceolate, 2.5–5 × 0.3–1.2 mm, apex acute;

stamens 10;

pistils 1–2 mm, stipitate-glandular near suture and on angles, often with papillae on suture;

styles erect, or, when short, often recurved, 0.3–1.2 mm.
Seeds

0.8–1.5 mm.
Cymes

1–5-branched, 5–15-flowered, 1–5 cm.
Utricles

erect or ascending, 1.2–2.5 mm.
2n

= 18.

Sedella pumila
Phenology Flowering spring.
Habitat Gravelly soils, vernal pools, thin soil on outcrops of serpentine, limestone, lava, or granite, often in mat of moss
Elevation 30-1500 m [100-4900 ft]
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
Discussion

Flowers of Sedella pumila have a noticeably musty odor. The Oregon specimen of Sedum pumilum cited by R. T. Clausen (1975) as needing confirmation is not of this species, and the Nuttall specimen cited for Oregon by W. H. Brewer et al. (1876–1880, vol. 1) is of doubtful origin (R. V. Moran 1998).

Although W. L. Jepson (1909–1943, vol. 2) called Sedella congdonii a dubious variety of S. pumilum, H. K. Sharsmith (1936) and all later authors have kept it as a distinct species. The two taxa have broadly overlapping ranges and the same chromosome number, and although some specimens are different enough, they are connected by many intermediates. It does not seem practical to separate them (R. V. Moran 1998).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 8, p. 196. Treatment author: Reid V. Moran.
Parent taxa Crassulaceae > Sedella
Sibling taxa
S. leiocarpa, S. pentandra
Synonyms Sedum pumilum, Parvisedum congdonii, Parvisedum pumilum, S. congdonii, S. pumila var. congdonii, Sedum congdonii, Sedum pumilum var. congdonii
Name authority (Bentham) Britton & Rose: New N. Amer. Crassul., 45. (1903)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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