Pleioluma singuliflora (C.T.White & W.D.Francis) Swenson

Swenson, U. et al (2013) Taxon 62(4): 765.

Lewis Coondoo

Seldom exceeding 30 cm dbh. Exudate slow and meagre, mainly in the inner blaze but quite conspicuous. A cream or pale brown layer generally visible between the subrhytidome layer and the outer blaze. Pale brown, brittle stripes in the inner blaze.

Petioles and twigs produce a milky exudate. Leaf blades about 2.5-12 x 1.3-6 cm. Lateral veins curving inside the blade margin but not forming definite loops. Terminal buds and young shoots clothed in short, prostrate, brown hairs.

Sepals broadly ovate, sagittate or orbicular, about 5-5.5 x 4-4.5 mm, greyish puberulous on the outer surface, glabrescent or ferruginously sericeous on the inner surface. Corolla about 7-8 mm long. Stamens inserted about the middle of the corolla, filaments about 1.5 mm long, anthers about 1.5 mm long. Staminodes spathulate-oblong or linear, about 2-2.5 mm long. Ovary + style about 7-8 mm long, greyish sericeous. Style difficult to distinguish from the ovary.

Fruits +/- fusiform, about 25-30 x 10 mm, style persistent, about 8 mm long. Seed, usually one per fruit, about 16 x 7 x 4 mm. Testa hard and woody, hilum about 0.5-1 mm wide and about 1/2 the length of the seed.

Cotyledons ovate, about 31-41 x 10-12 mm. First pair of leaves elliptic, sparsely clothed in brown prostrate hairs. At the tenth leaf stage: terminal bud clothed in very fine prostrate pale hairs. Stem clothed in very fine prostrate brown hairs. Seed germination time 36 days.

Endemic to NEQ, restricted to the higher mountains between Thornton Peak and Mt Bartle Frere. Altitudinal range from 450-1550 m. Grows in mountain rain forest often in stunted rain forest on windswept ridges.

Pouteria singuliflora (C.T.White & W.D.Francis) Baehni, Candollea 9: 316 (1942). Planchonella singuliflora (C.T.White & W.D.Francis) P.Royen, Blumea 8: 345 (1955). Beccariella singuliflora (C.T.White & W.D.Francis) Swenson, Bartish & Munzinger, Cladistics 23: 221 (2007).   Sideroxylon singuliflorum C.T.White & W.D.Francis, Proceedings of the Royal Society of Queensland 37: 161 (1926), Type: Bellenden Ker, near the summit, C.T. White, January, 1923.