ROSULATOBULBOSUM Koidzumi, 1938
Distribution : Japan (Hachijojima and Amamioshima Islands), Korea.
Description (according to IHSP, 2003) :
Perennial or annual herbs with axillary many-leaved bulbils and decumbent to ascending tufted stems, often branched in the upper part, 6 -20 cm tall.
Leaves alternate, obovate, obtuse, spurred, sometimes with irregular margins, fleshy but flat, ± 10 mm.
Inflorescences cymes with 1 - 3 cincinni, these sometimes forked, bracts leaf-like.
FIowers 5-merous, (sub-) sessile, sepals basally free, shortly spurred, unequal, oblong to obovate-oblong, obtuse, mamillate, fleshy, 2 - 6 x 0,5 - 2 mm, suberect, petals lanceolate, shortly and narrowly mucronate, yellow, 3,5 - 5 mm, filaments yellow, anthers orange-yellow.
Cytology : 2n = 38, ± 56
Very close to and probably identical with S. bulbiferum (Ohwi 1965: 497).
See also "Sedum rosulatobulbosum & S. bulbiferum" by Ray Stephenson