Sedum acre
Sedum niveum
goldmoss stonecrop, moss stonecrop, mossy stonecrop, orpin acre, orpin âcre, wall-pepper
Davidson's stonecrop
trailing (nonflowering shoots ascending at tip), laxly branched, not bearing rosettes.
(primary) repent, branched, bearing axillary rosettes.
erect, usually simple, 5–10(–15) cm;
leaf blades triangular-ovate, base short-spurred;
offsets not formed.
erect or ascending, simple, 0.5–4.5 cm;
leaf blades obovate, oblanceolate, or elliptic-ovate, base short-spurred;
offsets not formed.
(usually deciduous, if persistent, then blade white, soft, papery), alternate, (densely imbricate), spreading, sessile;
blade yellow-green, not glaucous, triangular-ovate, terete to semiterete (elliptic in cross section), (2–)5(–8) × 1–4 mm, base obtusely short-spurred, not scarious, apex obtuse.
alternate or, rarely, nearly opposite, spreading, sessile;
blade dark green to yellow-green, speckled with red, not glaucous, obovate to oblanceolate, subterete, 4.8–9 × 2.2–4.2 mm, base spurred, not scarious, apex rounded or obtuse with minute mucronate appendage, (surfaces papillose).
cymes, 2–12-flowered or flowers solitary, monochasially (1–)2(–3)-branched;
branches not recurved, rarely forked;
bracts similar to leaves, smaller.
cymes, 2–9-flowered, or flowers solitary, 1–3-branched;
branches not recurved, not forked;
bracts similar to leaves, smaller.
absent or to 1 mm.
absent or to 1 mm.
5-merous;
sepals erect to spreading, distinct basally, green, oblong-ovate, unequal, 2–3 × 1.3–2.3, mm, apex obtuse;
petals spreading, distinct, bright yellow, oblong-ovate to lanceolate, not carinate, 5–9 mm, apex acute to acuminate;
filaments yellow;
anthers yellow, (oblong);
nectar scales yellowish green, square.
5(–8)-merous;
sepals divergent or suberect, distinct, lanceolate, oblong-lanceolate, or oblanceolate-elliptic, unequal, 4.4–7.2 × 1.2–1.7 mm, apex acute to obtuse, (sometimes papillose);
petals basal 1/3 erect, widely spreading distally, slightly connate basally, white streaked with pink, lanceolate, not carinate, 3.5–10 mm, apex acute with minute mucronate appendage;
filaments white, streaked with red;
anthers dark red;
nectar scales yellow, orange, or pink, stipitate-reniform or subquadrate.
stellately patent in fruit, distinct, yellowish.
erect in fruit, connate basally, pale brown.
= 40, 60, 80, 100, 120.
= 32, ca. 128.
Sedum acre
Sedum niveum
Sedum acre is native in Greenland. It is naturalized in North America across the northern United States and southern Canada from Quebec to North Carolina in the east and from British Columbia to Oregon in the west. Sedum elrodii was found near Somers in Flathead County, Montana. It is known only from a fragmental type specimen. R. T. Clausen (1975) considered it a naturalized form of S. acre with ovate leaf blades, basally connate petals, and procumbent and branched stems from a fleshy rootstock.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Sedum niveum occurs in the San Bernardino, Santa Rosa, and New York mountains in California and the Sierra San Pedro Mártir in Baja California; it is unusual in having tuberous, tufted roots rather than fibrous roots.
R. T. Clausen (1975) discussed issues relating to the identity and distribution of Sedum pinetorum, known only from the type collection, with uncertain locality but possibly Pine City, Mono County, California. He considered it conspecific with S. niveum because the fragments available suggested that it had tuberous roots; no similar plants have been found in the vicinity of Pine City or elsewhere in the Sierra Nevada.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
- Local floras:
BC, 
OR, 
WA - Local Web sites:
Flora NW, 
Go Botany, 
IL Wildflowers, 
MD Biodiversity, 
MI Flora, 
MN Wildflowers, 
PNW Herbaria 
WildflowerSearch
iNaturalist (observations)
USDA Plants Database- LBJ Wildflower Center
- SEINet
- Plants of the World Online
- Encyclopedia of Life
- Wikipedia
- Google Image Search
CA
