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Rhododendron sidereum R. sikangense Til S R. sichotense

Rhododendron sidereum

 R. sidereum, photo: B. Ernebjerg
R. sidereum i Wisley. Foto: B. Ernebjerg

 R. sidereum i Bremen Bot. Garden, photo: H. Eiberg
R. sidereum i Bremen Bot. Garden. Foto: H. Eiberg

 R. sidereum i  Arduaine Garden, photo: H. Eiberg
R. sidereum i Arduaine Garden. Foto: H. Eiberg

 R. sidereum in RSBG, photo: Hans Eiberg
R. sidereum BE#1239 i RSBG. Foto: Hans Eiberg

 R. sidereum in RSBG, photo: Hans Eiberg
R. sidereum BE#1239 i RSBG. Foto: Hans Eiberg

 R. sidereum in RSBG, photo: Hans Eiberg
R. sidereum KR10897 i RSBG. Foto: Hans Eiberg


 R. sidereum in RSBG, photo: H. Eiberg
R. sidereum CCHH#8054 i RSBG. Foto: H. Eiberg

 R. sidereum in RSBG, photo: Janis Bamboo
R. sidereum 205sd2013 fra RSBG. Foto: Janis Bomboo

 R. sidereum, photo: Mark Joel
R. sidereum ? i Tannock Glen Dunedin, New Zealand. Mørkere brunt indument. Foto: Mark Joel

 R. sidereum, photo: Hans Eiberg
R. sidereum på Pianma Pass V-Yunnan. Foto: Hans Eiberg

 R. sidereum, photo: Hans Eiberg
R. sidereum på Pianma Pass V-Yunnan, stamme. Foto: Hans Eiberg

 R. sidereum, photo: Mark Joel
R. sidereum ? stamme, i Tannock Glen Dunedin, New Zealand. Mørkere brunt indument. Foto: Mark Joel

R. sidereum (Grandia) Buske eller små træer fra 3 til 12 m. Blade 9-16 x 4-6.5 cm. Blomsterne kommer i maj-juni og er creme til klar gul, undertiden med en rød basal plet. Indumentet på bladundersiden er lysebrunt/sølvhvidt. Vokser i krat, blandede skove og åbne nåletræsskoven ved 2.700 til 3800 m i N-Burma og V. Yunnan.
H. Eiberg
ARS Flora of China D. Genbank
RBGE herbarium. R. sidereum
Flora of China
Shrubs or small trees, 3–10 m tall; branchlets and petioles with gray-white agglutinated indumentum when young, glabrescent. Petiole 15–25 mm; leaf blade leathery, narrowly oblong to oblong-lanceolate, 9–21 × 3.5–6.5 cm; base broadly cuneate or rounded; margin slightly revolute; apex obtuse or acute and apiculate; abaxial surface indumentum silvery-gray, thin, agglutinated, glabrous on midrib; adaxial surface dark-punctate, glabrous but with vestiges of juvenile hairs in midrib; midrib prominent abaxially, grooved adaxially. Inflorescence racemose-umbellate, 14–20-flowered; rachis 50–60 mm. Pedicel 1.5–3 cm, densely pale brown-tomentose; calyx oblique; teeth 8, ca. 1 mm, triangular, tomentose; corolla ventricose-campanulate, creamy-white to pale yellow, 3.5–4 cm, with crimson nectar pouches at base inside, lobes 8; stamens 16, unequal, filaments pubescent at base; ovary ca. 8 mm, densely fawn-tomentose, eglandular; style glabrous and slightly shorter than corolla but longer than stamens; stigma large and discoid. Capsule cylindric, oblique at base, 25–30 × 8–10 mm, ± fawn-tomentose. Fl. Apr–May, fr. Jul–Sep. Mixed forests on mountain slopes; 2400–3400 m. W Yunnan [NW Myanmar].  R. sidereum in Yunnan, photo: Ingolf Bogø
R. sidereum/grande i Yunnan. Foto: Ingolf Bogø

 R. sidereum in Yunnan, photo: Ingolf Bogø
R. sidereum/grande i Yunnan. Foto: Ingolf Bogø