CYANEUM   (Rudolph) H.Ohba, 1977

Synonyms :

Sedum cyaneum Rudolph (1811)

Sedum lilacinum  Ledebour (1812)

Sedum takasui  Kudo (1924) / Hylotelephium takasui  (Kudo) H.Ohba (1979)

Sedum dahurieum  Stephani ex Borissova (1939)

Sedum hyperboreum  C.E.C.Fischer ex Borissova (1939)

Section Sieboldia

Distribution : Russia (E Siberia, Sakhalin), northern Japan.

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

Rhizomatose with slender creeping main roots with lateral rootlets, caespitose.

Flowering stems 5 - 8 cm, often reddish.

Leaves alternate, sessile, spatulate to oblanceolate, 10 - 13 x 2 - 3 mm, glabrous, tip

obtuse (to slightly apiculate), base attenuate, margins entire.

Inflorescences terminal, cymose, compact, few-flowered, bracteate.

Flowers : Sepals linear, 2 - 2.5 mm, petals red-purple, narrowly ovate, 5 - 6 mm, spreading, stamens slightly longer than the petals, filaments deep purple, anthers blackish.

 
Flowering time : August  to September.

Cytology : 2n = 24