Rhododendron anagalliflorum Wernham

Trans. Linn. Soc. London, II, Bot. 1916. 9: 94.

WFO ID: wfo-0000400601

IPNI ID: urn:lsid:ipni.org:names:331925-1

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Description

Dwarf prostrate or creeping shrub to 15cm. Twigs very slender, 0.5–0.7mm in diameter, densely covered with shortly stalked dendroid or sub-sessile stellate scales at first, warty in the older glabrescent parts; internodes 0.5–2.5cm. Leaves 3–5 together in tight pseudowhorls at the upper 3–4 nodes. Blade 3–7 x 1–2.5mm, elliptic or sub-obovate; apex sub-acute or obtuse; margin entire, flat; base broadly tapering, initially scaly on both sides, glabrous above at maturity, laxly and more persistently scaly beneath. Scales brown, flat or slightly concave; marginal zone rounded or obtusely lobed; centre small, slightly impressed. Mid-vein visible only near the base above and slightly impressed there, slightly raised and visible for a greater length beneath; lateral veins obscure. Petiole 0.5–1 x 0.3mm, not grooved, brown-scaly. Flower buds to 6 x 3mm, narrowly ovoid with an acute apex, pale brown or pink, laxly scaly outside, the bract tips slightly spreading. Bracts narrowly ovate-acuminate, laxly scaly outside and along the margins. Bracteoles 4–5mm, linear. Pedicels 6–7 x 0.75mm, very slender, densely covered with dendroid stellate scales and sparse white hairs. Flowers solitary. Calyx c.2mm in diameter, obliquely cup-shaped, shortly obtusely 5-lobed. Corolla 10–18 x 7–18mm, funnel-shaped, white flushed with reddish purple near the base; tube 5–7 x 3–5 x 5–7mm, laxly scaly outside, glabrous inside; lobes 5–8 x 4–5mm, elliptic, semi-erect or half-spreading, not overlapping when fully open. Stamens distinctly dimorphic, regularly arranged all round the mouth, the longest exserted to 1.5mm; filaments 8 and 6.5mm, pink, linear, glabrous; anthers c.0.7 x 0.4mm, oblong. Disc densely hairy along the upper margin. Ovary c.1.8 x 1mm, broadly sub-ovoid-cylindrical, densely covered with short, spreading hairs, less densely scaly between the hairs; style c.1.5 x 0.2mm, sparsely hairy at the base or to halfway; stigma green, thick-globose. Fruit 10–15 x c.2mm, fusiform, pink, shortly hairy and scaly. Seeds 3–4mm including the tails.

Distribution

Indonesia, New Guinea (W), Mt Carstensz. Papua New Guinea, Bismarck Mts and Wahgi–Jimmy Divide. New Britain: Mt Lululua, in the Pomio subdistrict.

Altitude

Habitat

In montane forest, open grassland or alpine shrubberies, epiphytic on moss on trees, or trailing over fallen logs

Nomenclatural History

R. linnaeoides Schltr., Bot. Jahr. 1917. 55: 144, f.2.

Notes

References

Argent, G. (2006) Rhododendrons of subgenus Vireya. RHS:London. Page:147