Rhododendron sugaui Argent

Argent, G. (2006). Rhododendrons of subgenus Vireya p.201

WFO ID: wfo-0000405435

IPNI ID: urn:lsid:ipni.org:names:77073610-1

Verified by:

Description

Shrub to 1m. Twigs 1–2mm in diameter, rounded, laxly scaly, without simple hairs; internodes 1–5cm. Leaves in tight pseudowhorls 4–6 together, sometimes with one or two much smaller ones. Blade 20–35 x 8–12mm, elliptic or occasionally spathulate; apex rounded or minutely retuse; margin entire, strongly but narrowly revolute; base tapering; laxly silvery scaly above but quickly glabrescent; below densely scaly. Scales sub-stellate, with a broad, thin, silvery, margin and small, darker and slightly impressed centre. Mid-vein impressed into a groove throughout its length above, strongly raised for the whole length beneath; lateral veins not visible. Petiole 2–4 x c.1mm, laxly scaly initially. Inflorescence up to 5-flowered, the flowers hanging. Pedicels 15–18 x c.0.6mm, densely hairy, apparently without scales. Calyx c.4mm in diameter, distinctly lobed and sometimes with one or two much longer lobes, hairy outside. Corolla c.25 x 12mm, bright pink, narrowly funnel-shaped; tube c.13 x 3 x 7mm, glabrous outside, hairy inside in the proximal ½; lobes c.9 x 6mm, broadly elliptic. Disc hairy on the upper side. Stamens c.18mm, exserted to c.4mm; filaments densely hairy in the proximal 1⁄3, glabrous distally; anthers c.2mm. Ovary c.4.5 x 2mm, densely hairy; style c.15mm, hairy for c.2mm proximally, glabrous distally; stigma c.1.5mm in diameter, rounded.

Distribution

Malaysia (Borneo), Sabah, Telupid District, Mt Tawai.

Altitude

Habitat

Nomenclatural History

Notes

References

Argent, G. (2006) Rhododendrons of subgenus Vireya. RHS:London. Page:201