Rhododendron arboreum ssp. delavayi

˂˂ forrige næste ˃˃

Billeder af Rhododendron arboreum ssp. delavayi

R. delavayi. Foto: Ingolf Bogø
R. delavayi. Foto: Ingolf Bogø
R. delavayi. Foto: Ingolf Bogø
R. delavayi. Foto: Ingolf Bogø
R. delavayi på Cang Shan Foto: Hans Eiberg
R. delavayi på Cang Shan Foto: Hans Eiberg
R. arboreum spp. delavayi, Shibao Shan, Lijiang. Foto: Finn Bertelsen
R. arboreum spp. delavayi, Shibao Shan, Lijiang. Foto: Finn Bertelsen
R. delavayi indument x10 Shibao Shan, Lijiang. Foto: Finn Bertelsen
R. delavayi indument x10 Shibao Shan, Lijiang. Foto: Finn Bertelsen
R. delavayi, Guizhou L 2015 253. Foto: Finn Bertelsen
R. delavayi, Guizhou L 2015 253. Foto: Finn Bertelsen
R. delavayi "Kongen" med lysebrunt indument, Guizhou. Foto: Finn Bertelsen
R. delavayi “Kongen” med lysebrunt indument, Guizhou. Foto: Finn Bertelsen
R. arboreum spp. delavayi, blomsterknop. Foto: Hans Eiberg
R. arboreum spp. delavayi, blomsterknop. Foto: Hans Eiberg
R. delavayi, Guizhou L 2015, blomsterstilk. Foto: Finn Bertelsen
R. delavayi, Guizhou L 2015, blomsterstilk. Foto: Finn Bertelsen
R. delavayi, Guizhou L 2015 253. Foto: Finn Bertelsen
R. delavayi, Guizhou L 2015 253. Foto: Finn Bertelsen
R. delavayi, stamme. Foto: Hans Eiberg
R. delavayi, stamme. Foto: Hans Eiberg
R. delavayi stammer Guizhou 2015. Foto: Linda Glerup
R. delavayi stammer Guizhou 2015. Foto: Linda Glerup
Beskrivelse

R. delavayi (R. arboreum ssp. delavayi) (Arborea) vokser i Yunnan ved relativ lav højde. Den er ikke hårdfør i Danmark. Kan dog trives på beskyttet plads, hvor den ikke bliver udsat for hurtig afkøling.
Hans Eiberg


ARS
Flora of China
D. Genbank
RBGE Herbarium; delavayi
RBGE Herbarium; pilouittatum
RBGE Herbarium; peramoenum
RBGE Herbarium; nilagurium
RBGE Herbarium; albomentosum


Flora of China
Shrubs or trees, 1–7(–12) m tall; bark grayish, exfoliating into thin and small irregular flakes; young shoots stout, white-floccose, glabrescent. Winter buds ovoid, greenish, 6–7 mm, slightly tomentose. Petiole cylindric, 7–20 mm, glabrous; leaf blade leathery, long-lanceolate, 7–15 × 1–5 cm; base tapering; margin revolute; apex obtuse or acute; abaxial surface with indumentum 1-layered, spongy or somewhat agglutinated, whitish to fawn, glabrescent; adaxial surface light or dark green, ± rugose, glabrous at maturity, midrib very prominent abaxially, deeply grooved adaxially; lateral veins 14–20-paired, slightly raised abaxially, impressed adaxially; reticulate veins evident. Inflorescence spherical, umbellate, 10–20-flowered; rachis ca. 10 mm, densely rufous-tomentose. Pedicel stout, 0.8–1 cm, densely fawn-tomentose; calyx lobes 5, ca. 2 mm, triangular; corolla campanulate, fleshy, deep crimson to carmine, 3–5 × 3–4 cm, with 5 basal nectar pouches; lobes 5, ca. 1 × 1.3 cm, apex emarginate; stamens 10, unequal, 1.6–4 cm, filaments glabrous, anthers oblong, 2–2.8 mm; ovary conoid, ca. 8 mm, 10-locular, densely fawn-tomentose; style ca. 2.8 cm, glabrous or floccose to tip, stigma capitate. Capsule oblong, 18–20 × ca. 8 mm, blackish and roughened with the remains of the rusty tomentum. Fl. May, fr. Dec.

Mixed forests, evergreen broad-leaved forests, forest margins, thickets, hills, rocky slopes; 1200–3200 m. NW Guangxi, W Guizhou, SW Sichuan, SE Xizang, Yunnan [Bhutan, NE India, Myanmar, Thailand, N Vietnam].

Rhododendron delavayi intergrades with Rarboreum in Bhutan and NE India.

Google Translate »