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Leaves and Flowers. Copyright B. Gray
Flower. Copyright Barry Jago
Fruit, side views, longitudinal section and seeds. Copyright W. T. Cooper
Cotyledon stage, hypogeal germination. Copyright CSIRO
Scale bar 10mm. Copyright CSIRO
10th leaf stage. Copyright CSIRO
Pilidiostigma tropicum L.S.Sm.
Smith, L.S. (1956) Proceedings of the Royal Society of Queensland 67: 36. Type: QUEENSLAND. Cook District: ... Glen Allyn, J.L. Tardent sn, 18 Oct. 1929, Holo: BRI.
Cambial layer very yellow. Dead bark layered. Blaze may have an odour like freshly peeled potatoes (Solanum tuberosum).
Leaf blades about 4.5-8 x 2-3.8 cm. Two or sometimes three intramarginal veins visible. Petiole channelled on the upper surface, the margins of the channels thin, membranous, wavy and often red. Oil dots visible with a lens if not visible to the naked eye.
Calyx glabrous but marked by numerous oil glands. Petals concave, +/- orbicular in outline, about 7 mm diam., marked by numerous oil glands. Staminal disk flat-topped, stamens in many concentric rings. Stigma large and peltate, usually pink.
Two or three pairs of small, linear or leaf-like cataphylls are usually produced before the first pair of true leaves. First pair of true leaves ovate or elliptic, about 6-14 x 3-9 mm, apex retuse. Small oil dots visible with a lens. At the tenth leaf stage: leaf blade lanceolate or ovate, glabrous; oil dots small and numerous, visible with a lens; stem shortly 4-winged.
Distribution and Ecology
A beautiful small tree well worthy of a place in horticulture. The leaves are glossy dark green and the flowers which are white with prominent yellow stamens are followed by black fruits.
Shrub (woody or herbaceous, 1-6 m tall)