SERRATA  Ohba, 1977

Synonym : Sedum serratum  (Ohba) J.P.Kozhevnikov (1989)

Type : Kingdon-Ward 11980, Assam, India.

Subgenus Rhodiola, section Rhodiola

Etymology : Lat. ‘serratus’ = saw-edged, for the serrate leaf margins.

Distribution : E Himalaya : India (Assam), SE Tibet, forested slopes, near field borders, 3300 - 3800 m.

Description (by H. Ohba in IHSP, 2003) :

Dioecious, 25 - 60 cm tall. 

Rhizomes thick.

Flowering stems 4 - 8 mm in diameter, glabrous, smooth or papillate.

Leaves sessile, oblong to linear-oblanceolate, 7 - 13 x 2.5 - 4.5 cm, glabrous, tip acute, base ± auriculate, margin conspicuously serrate.

Inflorescences > 300-flowered, pedicels 2 (-3) mm, papiIlate.

FIowers 5- or 6-(male) or 4- to 5-merous (female), calyx glabrous, deeply divided, sepals narrowly oblong (male) or subulate (female), ± 1 mm (male) or 1.7 - 2 mm (female), petals greenish-yellow, oblanceolate (male) or linear (female), 2.2 - 2.5 mm (male) or 3 - 3.2 mm (female), stamens 2.2 - 2.6 mm, anthers yellow, nectar scales oblong, ca 0.8 mm, carpels 5 - 7 mm, each with 14 - 18 ovules, styles 0.5 - 0.7 mm.

Note :

R. serrata is related to R. bupleuroides.