Australian Tropical Rainforest Plants - Online edition

Pleioluma pilosa Jessup

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Leaves and flowers. © A. Ford
Leaves and flowers. © A. Ford

Jessup, L.W. (2019) Austrobaileya 10(3): 343. Type: Queensland. COOK DISTRICT: Wooroonooran National Park, along track to Towalla Mine, 17 January 2014, A. Ford AF6291 & W. Cooper (holo: BRI).


Trees to 18 m high. Twigs tomentose with mostly erect, tortuous or curved reddish brown 2-branched trichomes, glabrescent.


Leaves with petiole channelled above, (6–)8–12(–17) mm long; lamina obovate or broadly elliptic to almost orbicular, 2–7(–12) cm long, 1.5–4(–6) cm wide, adult foliage with apex obtuse or rounded, base obtuse and recurved margins, juvenile foliage with apex oblanceolate and acuminate, base acute or attenuate and flat margins, at first densely tomentose with tortuous and erect reddish brown trichomes, the upper surface nearly glabrous at full expansion, the lower surface with mostly erect 2 or rarely 3-branched trichomes, glabrescent and nearly glabrous when older; secondary veins (4–)6–9 pairs, impressed above, conspicuous below; tertiary veins oblique, obscure above and slightly less so below.


Flowers 1–3 in leaf axils; pedicels (12–)15–18 mm long, with reddish brown tortuous and erect trichomes. Calyx lobes narrowly ovate, 4–5 mm long, acute, reddish brown tomentose on outside, sericeous on inside. Corolla 8.8–9.2 mm long, lobes suborbicular, 2.5–3 mm long, ciliate on distal margin, the corolla is elsewhere glabrous. Stamens 2.5–3 mm long, filaments 1.6–1.8 mm long, attached near the middle of the corolla tube, anthers c. 1.6 mm long. Disk indistinct, sericeous. Ovary ovoid-conical, c. 2.5 mm long, appressed pubescent and tapering to the conical style; style c. 7.5 mm long, appressed pubescent on lower half.


Fruit not seen.


Features not available.

Distribution and Ecology

Endemic to NEQ, distributed along the eastern edge of the Atherton Tableland in Gadgarra State Forest and Wooroonooran National Park to the western end of the Francis Range. Grows in simple notophyll vineforest on soils derived from granitic or metamorphic rocks.

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