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rose-flower stonecrop

orpin d'espagne, Spanish stonecrop

Habit Herbs, perennial, cespitose or not, glabrous. Herbs, annual, tufted, glabrous or scattered glandular-hairy.
Stems

root-stocks, ascending, much-branched, bearing rosettes.

erect or ascending, simple or much-branched, (glandular-hairy), not bearing rosettes.

Flowering shoots

erect or decumbent, simple or branched, 4–30(–40) cm;

leaf blades oblanceolate, spatulate, obovate, or suborbiculate, base not spurred;

offsets not formed.

spreading or erect, simple, 5–15 cm, (glabrous or with scattered glandular hairs);

leaf blades linear to oblong, base not spurred;

offsets not formed.

Leaves

alternate, erect to spreading, sessile;

blade green, glaucous or not, not pruinose, oblanceolate, spatulate, or obovate, subterete or somewhat flattened, 10–50 × (4.5–)6–33 mm, base not spurred, not scarious, apex truncate to rounded or obtuse, emarginate or barely notched.

alternate, ascending, sessile;

blade green, sometimes glaucous, linear to oblong, semiterete or ± laminar, 4–20 × 1–2 mm, base not spurred, not scarious, apex obtuse, (surfaces usually glabrous or, rarely, glandular-hairy).

Inflorescences

elongate, paniculate cymes, 12–80-flowered, monochasially 3+-branched;

branches not recurved, 2-forked;

bracts similar to leaves, smaller.

lax to ± dense cymes, 2–8-flowered or flowers solitary, 2–4-branched;

branches not recurved, not forked;

bracts similar to leaves, smaller.

Pedicels

0.6–6.3 mm.

to 0.5 mm.

Flowers

5-merous;

sepals erect, (closely appressed to corolla tube), slightly connate basally, pale green, ovate or lanceolate, equal, (2–)2.6–5.1 × 2 mm, apex acute or subacute, (rarely obtuse in var. flavidum);

petals basally erect, divergent in distal 1/2, connate basally, pink, pinkish white, or white to yellowish white, lanceolate-oblong, oblanceolate-oblong, or elliptic-oblong, not carinate, 4–11 mm, apex obtuse, shortly mucronate or aristate;

filaments white, greenish white, or pink;

anthers red, reddish purple, red-brown, or yellow;

nectar scales white, yellow, or pink, reniform or transversely oblong.

5–9-merous;

sepals erect, connate basally, green, broadly triangular, equal, ca. 2 × 1 mm, apex acute, (glandular-pubescent);

petals spreading, distinct, white with pinkish midvein, lanceolate, not carinate, 4–5(–7) mm, apex narrowly acuminate;

filaments white;

anthers dark purple;

nectar scales white, spatulate-quadrate.

Carpels

erect in fruit, distinct, brown.

stellate-spreading in fruit, connate basally, white or pale pink.

2n

= 40.

Sedum laxum

Sedum hispanicum

Phenology Flowering spring–summer.
Habitat Rocks and waste places
Elevation 0-1000 m (0-3300 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
MA; MI; NY; UT; VT; ON; QC; s Europe; c Europe (Balkan Peninsula, Caucasus region); sw Asia (n Iran, Lebanon, Palestine, Turkey) [Introduced in North America]
[BONAP county map]
Discussion

Varieties 5 (5 in the flora).

Sedum laxum is unusual in forming offsets in axils of rosette leaves rather than on a rootstock or creeping stem.

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

Sedum hispanicum has been naturalized in North America since 1880; it is sometimes cultivated.

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

Key
1. Flowering shoot leaf bases clasping stems.
var. heckneri
1. Flowering shoot leaf bases not clasping stems
→ 2
2. Petals pale yellow or white with pink mid- veins; sepal apices obtuse.
var. flavidum
2. Petals pink or white; sepal apices acute
→ 3
3. Flowering shoot leaf blades suborbiculate.
var. eastwoodiae
3. Flowering shoot leaf blades spatulate to oblanceolate
→ 4
4. Leaf blades 9-17 mm wide
var. laxum
4. Leaf blades 17-33 mm wide.
var. latifolium
Source FNA vol. 8, p. 218. FNA vol. 8, p. 212.
Parent taxa Crassulaceae > Sedum Crassulaceae > Sedum
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. lanceolatum, 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. acre, S. albomarginatum, S. album, S. annuum, S. borschii, S. cockerellii, S. debile, S. divergens, S. glaucophyllum, S. havardii, S. lanceolatum, 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
Subordinate taxa
S. laxum var. eastwoodiae, S. laxum var. flavidum, S. laxum var. heckneri, S. laxum var. latifolium, S. laxum var. laxum
Synonyms Gormania laxa
Name authority (Britton) A. Berger: in H. G. A. Engler et al., Nat. Pflanzenfam. ed. 2, 18a: 451. (1930) Linnaeus: Cent. Pl. I, 12. 1755 ,
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