Scale bar 10mm. Copyright CSIRO
Flowers. Copyright Australian Plant Image Index (APII). Photographer: G. Butler.
Brachychiton diversifolius subsp. diversifolius
Brachychiton diversifolius R.Br. subsp. diversifolius
Guymer, G.P. (1988) Australian Systematic Botany 1(3): 230. Type: ?.
Brachychiton diversifolius R.Br., Plantae Javanicae Rariores: 234(1844), Type: North coast New Holland, (Winchelsea Is. NT), 16 Jan. 1803, R. Brown; holo:BM. Sterculia decipiens W.Fitzg., Journal and Proceedings of the Royal Society of Western Australia 3: 178(1918), Type: Near Derby and Mt. Harris and in numerous intervening localities. W. V. Fitzgerald 1195; lecto: PERTH. Brachychiton populneus (Schott & Endl.) R.Br., Plantae Javanicae Rariores: 234(1844), Type: ?. Sterculia caudata Benth., Flora Australiensis 1: 230(1863), Type: N. Australia. Careening Bay, N.W. coast, A. Cunningham; Victoria river and Point Pearce, F. Mueller.. Clompanus caudata (Benth.) Kuntze, Revisio Generum Plantarum 1: 78(1891), Type: ?. Brachychiton diversifolius var. caudatus (Benth.) Terrac., Bolletino del R. Orto Botanico di Palermo 1: 63(1897), Type: ?.
Kurrajong; Kurrajong, Northern; Kurrajong, Tropical; Northern Kurrajong; Tropical Kurrajong
Deciduous; leafless from late July to October. Fine oak grain in the inner blaze.
Petioles long, about 4-10 cm, and slender. Leaf blades cordate to ovate-lanceolate, about 6-16 x 4-9 cm. Midrib raised on the upper surface of the leaf blade. Twig bark strong and fibrous when stripped. Large mucilage producing pores visible in the twig pith; apex of the leaf blade very long and slender.
Perianth about 6-8 mm long, valvate in the bud, densely pubescent outside, glandular-puberulent and punctate inside. Floral nectaries absent from the inside of the perianth tube.
Fruits glabrous outside, about 6-10 x 3-4.5 cm. Seeds about 8-10 x 4.5-5 mm covered with a yellow mealy layer.
Cotyledons obovate, about 30 x 15-20 mm. Petioles and lower surface of cotyledons hairy at the base. First pair of leaves elliptic, margins entire. Stipules linear, about 1-2 mm long. At the tenth leaf stage: a few scattered hairs present on the petiole and stem.
Distribution and Ecology
Endemic to Australia, occurs in WA, NT, CYP and NEQ. Altitudinal range from sea level to 650 m. Grows in open forest communities across northern Australia but sometimes found in or on the margins of monsoon forest and gallery forest.