Rhodiola

ISHIDAE (Miyabe & Kudo) H.Hara, 1937

Synonyms :

Sedum ishidae  Miyabe & Kudo (1921) / Rhodiola himalensis var. ishidae  (Miyabe & Kudo) Jacobsen (1973)

Rhodiola stephanii var. hondoensis  Nakai (1938)

Rhodiola stephanii var. longifolia  Nakai (1938)

Section Rhodiola

Distribution : Japan (Hokkaido, Honshu), Russia (Far East : Kuriles).

Description (according to H. Ohba in IHSP, 2003) :

Dioecious, to 7 - 25 cm tall. 

Rhizomes cylindrical, to 1.5 cm in diameter, often branched.

Flowering stems 1 - 5, persistent for 1 year after death, glabrous, mamillate.

Leaves approximate, ascending to spreading, thickly herbaceous, linear-oblanceolate to oblanceolate, 1.5 - 5 x 0.4 - 1 cm, glabrous, nearly smooth, tip obtuse to acute, base attenuate, margin coarsely serrate.

Inflorescences 15- to 50-flowered, 1 - 2 x 2 - 4 cm in diameter, flat-topped, pedicels 1.5 - 3 mm, smooth.

FIowers 4-merous, calyx 2.5 - 3.4 mm (male) or 3.8 - 4.5 mm (female), tube ± 1 mm (male) or ± 1.5mm (female), sepals oblong (male) or oblong to oblong-subulate (female), 1.5 - 2.5 mm (male) or 2.3 - 3 mm (female), petals greenish-yeIlow, linear to oblong, 3 - 4 mm (male) or 2.2 - 2.7 mm (female), spreading to ascending (male) or erect (female), stamens longer than the petals, 3.6 - 4.5 mm, anthers orange or deep yellow.




Photos Stefan Neuwirth



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