RHODANTHA (Gray) Jacobsen, 1973
Synonyms :
Sedum rhodanthum Gray (1862) / Clementsia rhodantha (Gray) Rose (1903)
Type : Parry s.n., USA.
Subgenus Clementsia
Etymology : Gr. ‘rhodos’ = rose-red and ‘anthos’ = flower > for the red flowers.
Distribution : USA (S and C Rocky Mountains, Colorado Plateau, Mogollon Mts.).
Description (by H. Ohba in IHSP, 2003) :
Hermaphrodite, to 40 cm tall.
Rhizomes stout, branched, 1 - 7 cm in diameter.
Flowering stems erect.
Leaves elIiptic-oblanceolate to oblong, 14 - 28 x 4 - 7 mm, glabrous, tip acute to obtuse, margin entire or sparsely toothed.
Inflorescences elongate or sometimes congested.
FIowers 4- or 5-merous, 7 - 10 mm in diameter, nearly sessile, calyx deeply divided, sepals divergent, lanceolate, 7 – 8 mm, petals erect, oblanceolate-oblong, pink, rarely white, 9 - 12 mm, stamens distinctly shorter than the petals, anthers crimson, nectar scales reniform or reniform-ovoid, pale yellow, 0.6 - 0.8 mm, carpels pink or white, 7 - 11 mm, with slender styles, seeds fusiform-oblong, shortly tailed, obscurely longitudinally ribbed with transversal ladder-like riblets, pale brown, ca 1.9 mm.