Rhododendron subulosum Sleumer

Reinwardtia 1960. 5: 143.

WFO ID:

IPNI ID:

Verified by:

Description

Weak shrub to 30cm. Twigs to 1.5mm in diameter, at first sub-densely covered with star-shaped and shortly stalked, fragile scales, becoming glabrescent but remaining minutely warty near the tips; internodes 1–4cm. Leaves 3–5 together in pseudowhorls. Blade 35–80 x 1.5–3mm, linear; apex acute or nearly so; margin slightly revolute; base narrowly tapering; glabrescent above, more persistently scaly beneath. Scales the marginal zone angular or obtusely lobed; centre much darker and hardly impressed. Mid-vein distinctly impressed above, prominent beneath, red; lateral veins obscure. Petiole 2–4 x 0.5mm, rounded, red, much darker than the lamina in dry specimens. Bracts to 20 x 5mm; outer bracts subulate, inner ones, ovate-subulate, innermost ones ovate, abruptly subulate-acuminate in the upper ½ and acute, glabrous outside, reddish. Inflorescence 1–3-flowered. Pedicels 5–7mm, slender, densely stellate-scaly. Calyx c.2mm in diameter, obliquely disc-shaped, margin membranaceous, shortly 5-lobed, scaly outside. Corolla c.15mm, probably red; tube c.10 x 2–3 x 3–4mm, cylindrical, glabrous inside and out; lobes c.4 x 4mm, broadly obovate-sub-circular. Stamens 14–16mm; filaments filiform, glabrous; anthers sub-globose, c.1.5mm in diameter. Disc prominent, glabrous. Ovary c.3 x 1.3mm, sub-cylindrical, densely stellately scaly, abruptly contracted distally; style 5–6mm, slender, glabrous; stigma club-shaped. Fruit c.15 x 4mm, valves reflexed and twisted. Seeds narrow, tailed at both ends, 2–3mm.

Distribution

Indonesia, New Guinea (W), Doormantop.

Altitude

Habitat

Epiphytic on ridge

Nomenclatural History

Notes

References

Argent, G. (2006) Rhododendrons of subgenus Vireya. RHS:London. Page:294