Rhododendron carstensense Wernham

Trans. Linn. Soc. London, II, Bot. 1916. 9: 96.

WFO ID: wfo-0000403304

IPNI ID: urn:lsid:ipni.org:names:332117-1

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Description

Shrub. Twigs sub-angular, whitish, smooth, early glabrescent; internodes 7–10cm. Leaves 3–4 together in pseudowhorls. Blade 65–100 x 40–55mm, broadly elliptic, elliptic to obovate-elliptic; apex obtuse to rounded; margin entire, flat; base shortly and broadly tapering, glabrescent above at maturity, sub-densely scaly beneath. Scales small, marginal zone irregularly dentate; centre a little impressed. Mid-vein somewhat impressed above, strongly prominent beneath; lateral veins 8–10 per side, irregular, straight below, curved-anastomosing before the margin, slightly impressed above, hardly prominent beneath, smaller veins laxly reticulate, raised beneath only. Petiole 10–15 x c.2mm, grooved above. Bracts to 40 x 18mm, obovate-elliptic, hairy outside in the middle and with longer and appressed hairs in the lower part on both sides. Bracteoles 30–50mm, filiform, hairy. Inflorescence 6–9-flowered. Pedicels c.5mm, thick, scaly. Calyx minute, oblique, circular, obscurely 5-lobed. Corolla 65–70mm, trumpet-shaped; tube 50–60 x c.3 x c.6mm, cylindrical, hardly widened upwards, glabrous outside, densely hairy inside in the proximal ½; lobes c.17 x 14mm, obovate-sub-circular, glabrous. Stamens somewhat exserted from the mouth; filaments linear, densely hairy to 4/5, glabrous distally; anthers c.6 x 1mm, each cell with a tail-like appendage (1–1.5mm) at the base. Disc sub-glabrous. Ovary c.7 x 1.8mm, elongate-cylindrical, very densely covered with yellowish hairs, gradually tapering distally; style yellowish hairy in the proximal 1⁄3, glabrous distally; stigma thick-obconical.

Distribution

Indonesia, New Guinea (W), Mt Jaya (Mt Carstensz), once collected

Altitude

Habitat

Nomenclatural History

Notes

References

Argent, G. (2006) Rhododendrons of subgenus Vireya. RHS:London. Page:172