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Flora of Australia Online

Megahertzia amplexicaulis A.S.George & B.Hyland, Fl. Australia 16: 497 (1995)

T: branch of Cooper Creek, Qld, 16°10'S, 145°24'E, 22 Aug. 1987, G.Sankowsky 638 & N.Sankowsky ; holo: BRI.

Tree to 10 m tall. Bark slightly flaky; outer blaze dark red to brown with pale streaks. Branchlets minutely appressed-puberulous. Leaves sessile and amplexicaul, or shortly petiolate; lamina elliptic to lanceolate, obtuse, 8–23 cm long, 2.5–6 cm wide, entire, undulate, discolorous, minutely puberulous, soon glabrous. Conflorescence to 26 cm long; rachis glabrous; common bracts ±triangular, acute, 1–1.3 mm long with sparsely puberulous margins; floral bracts ±triangular, c. 0.5 mm long. Pedicels at c. 90° to rachis, 6–7 mm long, ±glabrous. Perianth 22–29 mm long, white, glabrous; limb 5 mm long; tepals relaxing after anthesis. Anthers 3.5–4 mm long. Hypogynous glands c. 1 mm long, irregularly lobed. Gynoecium 24–28 mm long, straight, glabrous; pollen presenter 4–5 mm long, ribbed, green. Follicle 30–35 mm long, 5–7 mm wide, canoe-shaped after dehiscence. Seeds 22–25 mm long, 4 mm wide, winged; wings much wider on one side than the other and wider at the ends. Fig. 163.

Occurs on Mt Hemmant, at Noah Creek, Roaring Meg Creek and the Pieter Botte Logging Area, north-eastern Qld. Grows in granitic soil in rainforest, from sea level to 700 m. Flowers June–Sept.; fruits Dec. Map 405.

Qld: Noah Ck, Parish of Noah, B.Gray 4550 (QRS); Roaring Meg Ck, L.W.Jessup 684 (BRI); Mt Hemmant, L.J.Webb & J.G.Tracey 10894 (BRI).

Flowers have a strong, sour scent. Peduncle with narrow, triangular bracts 1–1.5 mm long with a small basal swelling. Cotyledons obovate with obtuse, basal auricles, 17–20 mm long. Seedling leaves simple, serrate. Juvenile leaves 3-lobed. Referred to as '752 Orites sp.' (=RFK/3196) by B.P.M.Hyland & T.Whiffin, Austral. Trop. Rain Forest Trees 2: 410 (1993).



Data derived from Flora of Australia Volumes 16 (1995), 17A (2000) and 17B (1999), products of ABRS, ©Commonwealth of Australia