Rhododendron tanastylum var. pennivenium
Billeder af Rhododendron tanastylum var. pennivenium
Beskrivelse
R. tanastylum var. pennivenium (Neriiflora). Ikke hårdfør i Danmark.
1975/073 Wakehurst (+5 °C). An English form of an obscure species with faint indumentum and light crimson flowers.
● R. tanastylum var. pennivenium DnR24-112 frø. (knuste) Foto: Hans Eiberg
● R. tanastylum var. pennivenium DnR24-112 frø. (knuste) Foto: Hans Eiberg
Trees and Shrubs Online; R. tanastylum Balf. f. & Ward
Shrub or small tree, 1–4(–10) m. Leaves coriaceous, 7.5–15 × 3–5 cm, elliptic to oblanceolate, apex acuminate, lower surface glabrous or with a thin veil of indumentum, also with persistent red punctate hair bases overlying the veins. Flowers 4–8, in a lax truss, deep pink to deep crimson, with black nectar pouches and few to many flecks, tubular-campanulate, 45–55 mm; ovary glabrous to rufous-tomentose and glandular, style glabrous.Flowering April-May. Royal Horticultural Society (1997)
Distribution Myanmar NE China W Yunnan India Arunachal Pradesh
Habitat 1,850–3,350 m
RHS Hardiness Rating H3
Conservation status Least concern (LC)
An evergreen shrub varying from 8 to 20 ft high in the wild; young shoots soon becoming glabrous. Leaves elliptic-lanceolate or oblanceolate, tapered about equally towards both ends but terminated by a short slender point, 3 to 51⁄2 in. long, 1 to 13⁄4 in, wide, glabrous and green on both surfaces; stalk 1⁄2 to 5⁄8 in. long. Flowers borne during May in a racemose cluster of about eight; pedicels about 3⁄8 in. long. Calyx a mere wavy rim. Corolla tubular-campanulate, 2 in. long, 11⁄2 in. wide, deep crimson with darker spots, five-lobed, the lobes notched. Stamens ten, glabrous or slightly downy at the base; ovary and style glabrous, the latter much longer than the stamens and standing out well beyond the corolla. (s. and ss. Irroratum)
Native of the Yunnan-Burma borderland westward through upper Burma to the Mishmi Hills, Assam, and the region of the Tsangpo gorge; also of Thailand; discovered by Kingdon Ward above Hpimaw, upper Burma, and introduced by Farrer and Cox five years later from the same locality, where it grows at about 8,000 ft. In the typical form the flowers are crimson or crimson-scarlet, but other colours have been recorded by Kingdon Ward and Forrest in their field notes, e.g., ‘black crimson’, ‘light or dark amethyst purple’, or ‘morose purple’. It is found at altitudes between 6,000 and 11,ooo ft and is tender in some forms. It is not of much ornamental value, even the crimson forms having a hint of magenta in their colouring.