Rhododendron buruense J.J.Sm.

Fedde Rep. 1932. 30: 168.

WFO ID: wfo-0000400463

IPNI ID: urn:lsid:ipni.org:names:332070-1

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Description

Shrub to 3.5m. Twigs 3–4mm in diameter, rounded, laxly appressed-scaly, often whitish; internodes 3–16cm. Leaves 4–6 together in lax pseudowhorls with 1–2 add­itional ones on the internodes. Blade 70–160 x 4–75mm, ovate-elliptic to elliptic; apex shortly acuminate, obtuse; margin very slightly or not revolute; base broadly tapering, sometimes nearly rounded, glabrescent above when mature, laxly persistently scaly beneath. Scales small, marginal zone variously lobed, fragile and disappearing, leaving dark spots; centre small, shallowly impressed. Mid-vein grooved above, obtusely prominent beneath; lateral veins 8–12 per side, straight below, curved and anastomosing before the margin, minutely impressed above, distinctly raised beneath, reticulation lax, faintly prominent beneath. Petiole 10–20 x 1.5–2mm, slightly flattened, rugose, often white. Inflorescence 7–10-flowered. Pedicels 20–33 x c.1mm, laxly scaly and hairy. Calyx 4–5mm in diameter, obliquely disc-shaped, scaly and with some short hairs outside. Corolla 40–50mm, broadly funnel-shaped, tubular below, white; tube 20–26 x 5–6 x 7–8mm, distinctly 5-pouched at the base, straight, with some scattered scales, (almost glabrous), outside, shortly hairy inside; lobes 12–23 x 12–20mm, spreading, broadly obovate to sub-circular. Stamens unequal, exserted to c.6mm; filaments linear and sub-densely patently hairy in the proximal 1⁄3–½, filiform and glabrous distally; anthers 3–4 x 1mm, oblong, the base slightly thickened. Disc prominent, glabrous or shortly hairy on the upper margin. Ovary 6–7 x 2.5–3mm, sub-cylindrical, densely covered with sub-patent short hairs which cover small scales, abruptly contracted distally; style densely hairy and laxly scaly to the lower 2⁄3, glabrous distally; stigma rounded.

Distribution

Indonesia, Maluku, Buru, Mt Toga and between Leksula and Mnges Waen.

Altitude

Habitat

Terrestrial on loamy limestone soil

Nomenclatural History

R. lompohense var. grandifolium J.J.Sm., Fedde Rep. 1932. 30: 169.

Notes

References

Argent, G. (2006) Rhododendrons of subgenus Vireya. RHS:London. Page:292