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Flower (male?). Copyright Barry Jago
Fruit. CC-BY J.L. Dowe
Scale bar 10mm. Copyright CSIRO
10th leaf stage. Copyright CSIRO
Cotyledon stage, epigeal germination. Copyright CSIRO
Scientific NameTimonius timon (Spreng.) Merr. var. timon
Merrill, E.D. (1937) Journal of the Arnold Arboretum 18: 131.
Stipules about 10-40 mm long, tapering to a point at the apex, densely clothed with long, prostrate, silky, pale brown hairs. Leaf blades about 8.5-12.5 x 1.8-5.2 cm. Domatia are tufts of hairs and may occur along the midrib and also along the lateral veins.
Inflorescence much shorter than the leaves. Corolla sericeous on the outer surface, tube about 7-12 mm long, lobes about 6-7 mm long, with conspicuous, longitudinal, crenate, glandular ridges, margins wavy or crenate. Anthers sessile, about 6-7 mm long. Ovary about 5 mm long. Style about 3-4 mm long. Stigmas numerous and conspicuous each about 4-5 mm long.
Cotyledons ovate, about 5-6 mm long. At the tenth leaf stage: leaf blade +/- elliptic, base cuneate or attenuate, hairy on the upper surface at least along the midrib; stipules sheathing, linear triangular, hairy on the outer surface; petiole, stem and terminal bud clothed in +/- prostrate, pale hairs. Seed germination time 18 to 45 days.
Distribution and Ecology
Occurs in WA, NT, CYP, NEQ, CEQ and southwards to south-eastern Queensland. Altitudinal range from sea level to 850 m. Usually grows in open forest but also found in monsoon forest and on rain forest margins. Also occurs in Malesia.
Natural History & Notes
This plant used medicinally by Aborigines. Cribb (1981).
Shrub (woody or herbaceous, 1-6 m tall)
SynonymsNelitris timon (Spreng.) Britten, The Journal of Botany 39 : 68(1901). Erithalis timon Spreng., Pl. Min. Cogn. Pugil. 1: 18(1813), Type: Rumph. Herb. Amb. 3: 216, t. 140. (1743). Guettarda polyphragmoides F. Muell., Fragmenta Phytt. 2: 134(1861), Type: Victoria, Fitzmaurice, Roper & Wentworth Rivers, Holo: MEL?. Polyphragmon sericeum Desf., Mem. Mus. Hist. Nat. 6: 6(1820), Type: Timor, 1801 or 1803, Exped. Baudin, Holo: P. Iso: C. Fide Darwin (1993). Timonius rumphii DC., Prodromus systematis naturalis regni vegetabilis 4: 461(1830), Type: Ambon, Rumphius. Timonius sericeus K. Schum., Die Flora Kaiser Wilhelms Land : 131(1889), Type: New Guinea. Timonius brassii S. Moore, Journal of Botany 65: 265(1927), Type: Papua, Bomguina River, Brass, 1626, 2 June 1926, Holo: BM, Iso: A, BRI, P.
CC-BY Australian Tropical Herbarium unless otherwise indicated in the images.