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spearleaf stonecrop

roseflower stonecrop

Habit Plants perennial, cespitose or not, glabrous; stolons 1.4–5 mm in diameter when dried.
Stems

ascending; much branched, bearing dense rosettes.

Flowering shoots

erect or decumbent, 10–42 cm;

stem leaves alternate, oblanceolate, elliptic, oblong or suborbicular; broadest near or above middle, auriculate or not, decurrent or not, different from rosette leaves.

Leaves

rosette leaves obovate, spatulate or oblanceolate, subterete to somewhat flattened, 10–50 × (4.5)6–33 mm, green, bases not spurred, not scarious;

tips truncate to rounded or obtuse, notched or not;

surfaces glaucous or not, not pruinose.

Inflorescences

panicle-like cymes with 12–80 flowers, with 3+ branches;

branches 2-forked;

bracts similar to stem leaves but smaller.

Flowers

5-parted;

calyx lobes erect, closely appressed to corolla tube; ovate or lanceolate; (2)2.6–5.1 mm, pale green;

tips acute or subacute;

petals erect or spreading 15–30° from flower axis, 4–11 mm, pink with broad white margins, sometimes almost entirely white; aging red;

tips acuminate, sometimes attenuate;

anthers dark rose red, rarely dark red-orange; aging black.

Fruits

erect, brown.

Sedum lanceolatum

Sedum laxum

Distribution
[WildflowerSearch map]
[BONAP county map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Western North America. 4 subspecies; 2 subspecies treated in Flora.

Sedum laxum is recognized by its long, narrowly acute to acuminate, usually pink petals. The white petal margins can be broad, and, depending on environmental conditions, the entire petal may be white. Even when petals are white, anthers remain dark red, rarely dark red-orange.

Source Flora of Oregon, volume 2, page 602
Barbara Wilson, Richard Brainerd, Nick Otting
Sibling taxa
S. acre, S. album, S. debile, S. divergens, S. laxum, S. leibergii, S. moranii, S. oblanceolatum, S. oreganum, S. oregonense, S. radiatum, S. spathulifolium, S. stenopetalum, S. thartii
S. acre, S. album, S. debile, S. divergens, S. lanceolatum, S. leibergii, S. moranii, S. oblanceolatum, S. oreganum, S. oregonense, S. radiatum, S. spathulifolium, S. stenopetalum, S. thartii
Subordinate taxa
S. lanceolatum var. lanceolatum
S. laxum ssp. heckneri, S. laxum ssp. laxum
Synonyms Sedum lanceolatum var. rupicola, Sedum rupicola
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