POLYTRICHOIDES   Hemsley, 1887

Synonyms :

Sedum polystichoides  hort. (s.a.)

Sedum kiusianum  Makino

Sedum yabeanum  Makino (1903) / Sedum polytrichoides var. yabeanum  (Makino) H.Ohba (2001)

Sedum coreense  Nakai (1914)

Sedum lepidopodum  Nakai (1940)

Sedum yabeanum var. setouchiense  Murata & Suasa (1975) / Sedum polytrichoides var. setouchiense  (Murata & Yuasa) H.Ohba (2001)

Distribution : E China to Korea (incl. Cheju Do Island) and the Russian border, Japan (Honshu, Kyushu, Shikoku); near the coast and mountain forests at moist rocky places in shade.

Description (according to 't Hart, Bleij & U. Eggli in IHSP, 2003) :

Perennial tufted herbs with ascending slender densely leafy stems.

Leaves alternate, imbricate, linear-lanceolate to oblong, acute, 5 - 15 x 1 - 2 mm.

Flowering branches ascending, slender, branched from the base, more remotely leafy than the sterile stems, 5 - 10 cm.

Inflorescences corymb-like cymes with 2 - 3 sometimes forked cincinni.

Flowers 5-merous, sessile or subsessile, sepals broadly sessile, triangular, subacute to acuminate, 1.5 - 2 mm, petals slightly connate at the base, narrowly lanceolate, acuminate or shortly mucronate, yellow, 5 - 6 mm, filaments yellow.

Cytology : 2n = 22, 24, 24 - 30, 28, 28 - 40, 32, 40, 42, 44, 46, 50, 52, 54, 70

Morphologically and cytologically (Uhl & Moran 1972) a very variable species.

S. yabeanum and its var. setouchiense have recently been transferred to S. polytrichoides by Ohba (2201: 26 - 27) and were recognized at the level of subspecies and variety, respectively.