Rhododendron johnstoneanum
Billeder af Rhododendron johnstoneanum
Beskrivelse
R. johnstoneanum (Maddenia). Stedsegrønne buske på 1,2-3,7 m. På de elliptiske blade er randen beklædt med børster. De store og prangende tragt-klokke-formet blomster er hvide til creame eller bleg gul, ofte med en dybere farvet blotch eller rødlig markeringer. Blomsterne er ofte duftende eller med dobbelte blomster. En af de mest hårdføre arter i Maddenia undersektionen. Vildtvoksende i NØ Indien, hvor det optræder som en epifyt i skove fra 1.900 til 3.100 m.
Hans Eiberg
R. johnstoneanum frø. Foto: Jan Brodersen
R. johnstoneanum Watt ex Hutch. Foto: Hans Eiberg
ARS
Ikke i Flora of China
RBGE Herbarium; R. johnstoneanum
Trees and Shrubs Online; R. johnstoneanum Watt ex Hutch.
Shrub, 1.2–3.7 m; young shoots setose. Leaves 5.5–7.5 × 2.4–3 cm, broadly elliptic, apex obtuse or subacute, margins variably ciliate, upper surface with impressed midrib, lower surface brownish, with touching or overlapping scales. Flowers 3–4, in a loose terminal inflorescence, not scented; calyx disc-like, ciliate; corolla white or cream, often with a yellowish blotch and pink or purplish flush, funnel-shaped, 48–55 mm, outer surface pilose only at base, scaly; stamens 10; ovary scaly, impressed below the style that is scaly below. Flowering April-May. Royal Horticultural Society (1997).
Distribution India Manipur, Mizoram
Habitat 1,850–3,100 m
RHS Hardiness Rating H3
Awards AM 1934 (Col S. Clay, Lingfield, Surrey and Lt Col L.C.R. Messell, Nymans); flowers creamy white, with a yellow blotch. AM 1941 (Lt Col E.H.W. Bolitho, Penzance) to a probable hybrid clone ‘Rubeotinctum’ from Kingdon-Ward 7732; flowers white, with a deep pink stripe on each corolla lobe and a pink or yellow blotch. AM 1975 (Sir Giles Loder, Leonardslee, Sussex) to a clone ‘Demijohn’; flowers white, throat flushed yellow-green. AGM 1993
Conservation status Least concern (LC)
Taxonomic note This is a distinctive species. Royal Horticultural Society (1997).