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lance-leaf stonecrop, spear-leaf stonecrop

Photo is of parent taxon

lance-leaf stonecrop, spear-leaf stonecrop

Habit Herbs, perennial, tufted, glabrous. Plants 5–15 cm.
Stems

rootstocks, decumbent and ascending, branched, (sometimes papillose), bearing terminal rosettes and above ground shoots.

Flowering shoots

erect, simple or branched, 3–18 cm;

leaf blades elliptic-lanceolate, base short-spurred;

offsets not formed.

Leaves

(not easily detached), alternate, spreading-erect to erect or ascending, sessile;

blade dull gray-green or bluish green, green, or reddish green, often glaucous, lanceolate, elliptic-lanceolate, or elliptic-ovate, subterete, 4.2–13 × 1.5–3.5 mm, base very short-spurred, base of withered blade at times becoming scarious, apex obtuse or obtusely apiculate, (surfaces papillose).

Inflorescences

cymes, 5–25-flowered, (1–)3(–6)-branched;

branches ascending, spreading to erect, or recurved, forked;

bracts similar to leaves.

Pedicels

absent or to 3 mm.

Flowers

5-merous;

sepals erect, connate basally, pale green to yellow-green, ovate or lanceolate, equal, 2–5 × 1–2 mm, apex acute or, rarely, obtuse, (often papillose);

petals widely spreading from suberect base, distinct, canary to golden yellow, lanceolate, elliptic-lanceolate, or linear-lanceolate, canaliculate, 6–9.2 mm, apex acute to acuminate with minute mucronate appendage;

filaments yellow;

anthers yellow, sometimes suffused with red;

nectar scales deep yellow to yellow-green, obovately square.

sepals 2–4 mm;

petals 6–9 mm.

Carpels

erect in fruit, basally connate, brown.

Rosette

leaf blades 4.2–9 × 1.5–2.5 mm.

2n

= 16.

Sedum lanceolatum

Sedum lanceolatum var. lanceolatum

Phenology Flowering spring–fall.
Habitat Gravel, crevices of rocks in open situations, rocky meadows, boreal steppe, open, dry, sandy areas
Elevation 0-4100 m (0-13500 ft)
Distribution
from FNA
AK; AZ; CA; CO; ID; MT; NE; NM; NV; OR; SD; UT; WA; WY; AB; BC; SK; YT
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; AZ; CA; CO; ID; MT; NE; NM; NV; OR; SD; UT; WA; WY; AB; BC; SK; YT
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

Sedum lanceolatum forms offsets in the axils of rosette leaves. The mature carpels have divergent beaks and narrow lips along the adaxial suture.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

The name Sedum lanceolatum Torrey var. subalpinum (Fröderström) Ohba is illegitimate because there was already a heterotypic infraspecific name [subsp. subalpinum (Blankinship) R. T. Clausen] under the species although at a different rank.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Rosette leaf blades 4.2-9 × 1.5-2.5 mm.
var. lanceolatum
1. Rosette leaf blades 8-13 × 3-3.5 mm.
var. nesioticum
Source FNA vol. 8, p. 206. FNA vol. 8, p. 206.
Parent taxa Crassulaceae > Sedum Crassulaceae > Sedum > Sedum lanceolatum
Sibling taxa
S. acre, S. albomarginatum, S. album, S. annuum, S. borschii, S. cockerellii, S. debile, S. divergens, S. glaucophyllum, S. havardii, S. hispanicum, S. laxum, S. leibergii, S. lineare, S. mexicanum, S. moranii, S. nanifolium, S. nevii, S. niveum, S. nuttallii, S. oblanceolatum, S. obtusatum, S. ochroleucum, S. oreganum, S. oregonense, S. praealtum, S. pulchellum, S. pusillum, S. radiatum, S. robertsianum, S. rupestre, S. rupicola, S. sarmentosum, S. sexangulare, S. spathulifolium, S. stelliforme, S. stenopetalum, S. ternatum, S. villosum, S. wrightii
S. lanceolatum var. nesioticum
Subordinate taxa
S. lanceolatum var. lanceolatum, S. lanceolatum var. nesioticum
Synonyms S. stenopetalum var. subalpinum
Name authority Torrey: Ann. Lyceum Nat. Hist. New York 2: 205. (1827) unknown
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