TERNATUM Michaux, 1803
Synonyms :
Sedum americanum Banks in sched.
Sedum portulacoides Willdenow (1809)
Sedum deficiens Donn (1811)
Sedum octogonum Haworth (1812)
Sedum ternatum var. minus Praeger (1921)
Distribution : Eastern USA (Appalachian Highlands, adjacent Ohio, Arkansas, Missouri, Iowa); deciduous forests, 50 - 1700 m.
Description (by 't Hart & Bleij in IHSP, 2003) :
Perennial herbs with decumbent finely papillose stems.
Leaves in whorls of 3 (-4), sometimes decussate, obovate, obovate-spatulate to elliptic, rounded, sometimes emarginate, finely papillose or crenulate, flat (4 - 30x wider than thick), truncately short-spurred, 10 - 17 x 7 - 11 mm, shortly petiolate or sessile, pale yellow-green to dark green.
Flowering branches erect, 4 - 20 cm.
Inflorescences cymes with 3 sometimes papillose branches, pedicels papillose.
FIowers 4- (to 6-)merous, sessile or subsessile, sepals broadly sessile, basally connate, lanceolate-oblong or elliptic, obtuse, finely papillose, pale yellow-green, ± 3.5 x 1 mm, petals free, elliptic-lanceolate, acute, ventrally channelled, dorsally carinate, white, 5.4 - 8.9 mm, filaments white, basally flattened, anthers red or purple.
Cytology : 2n = 16, 24, 32, 48
Note :
Sedum ternatum 'Rolling Rock' according to the originator is not a hybrid, the cross he tried has not taken.
