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Peter Norris, enabling the use of The Rhododendron Handbook 1998
New article for Trees and Shrubs Online.
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'Rhododendron rubineiflorum' from the website Trees and Shrubs Online (treesandshrubsonline.
Shrub to 0.2 m, epiphytic or creeping on peaty banks, young stems densely rough scaly the scales fairly persistent. Leaves 0.5–1 × 0.2–0.5 cm, ovate to elliptic, broadly elliptic, to occasionally subcircular the apex acute to obtuse, rarely rounded, often sub-acuminate, the margin recurved, rather cartilaginous, often erose, subserrate in the upper part, the base tapering to rounded; upper surface with a slightly impressed midrib near the base, or quite smooth, the laterals obscure, with a few small scales on the upper surfaces at first but quickly glabrescent; below the midrib slightly raised near the base, the laterals obscure, scales well spaced, brown, irregularly lobed to sub-entire. Flowers solitary, hanging; calyx a low scaly ring; corolla red, campanulate, 2–2.5 × 2.5–3 cm, conspicuously scaly on the tube outside; stamens 10, evenly arranged around the mouth of the flower; ovary densely hairy and scaly, style at the base hairy and scaly, glabrous in the upper half. Royal Horticultural Society (1997)
Distribution Papua New Guinea Widespread, not yet recorded from Irian Jaya
Habitat 2,600–3,400 m
RHS Hardiness Rating H2
Conservation status Vulnerable (VU)
A pretty species which since its recognition and introduction into cultivation has been used a great deal as a parent for hybridizing. Previously included within R. anagalliflorum q.v. but R. rubineiflorum may be distinguished by its much broader more open flowers which are solidly coloured red or pink. Royal Horticultural Society (1997)