Argophyllum heterodontum A.R.Bean & P.I.Forst.

Argophyllaceae

Bean, A.R. & Forster, P.I. (2018) Austrobaileya 10(2): 217-219, Figs. 2D-F, 8F, Map 2. Type: "Queensland. Cook District: Walsh’s Pyramid, 2 km SE of Gordonvale, 27 May 2003, P.I. Forster PIF29378 & R. Jensen (holo: BRI [1 sheet]; iso: MEL, NSW)."

Shrub or small tree 2-6 m high. Hairs on new growth rusty or brown; hairs more than 10 cm from growing point creamy-white.

Petiole 17-35 mm long; fully expanded lamina elliptical, broadly-elliptical or ovate, 92-143 mm long, 33-55 mm wide, 2.5-3.3 times longer than wide; 6-10 secondary veins on either side of midrib. Lamina apex acuminate; base cuneate, not oblique or occasionally oblique by up to 2 mm. Lamina margins dentate, with teeth usually varying in length (alternating long and short), 24-61 on each side of the lamina, the longer teeth 1-4.5 mm long. Upper surface of fully expanded lamina green, glabrous; sparse hairs present on young expanding lamina, appressed, 0.5-0.7 mm long. Lower surface of lamina white, hairs appressed; secondary veins brown or white, raised; tertiary veins white, ± flush with indumentum.

Inflorescences axillary, paniculate, 35-90 mm long, densely tomentose, primary axis 20-73 mm long, secondary branches 7-14 mm long, bracts narrowly-deltate, 1.5-8.5 mm long. Pedicels 1.4-2.5 mm long; flowering hypanthium cupular, 2.8-4 mm diameter. Calyx lobes 1.2-1.5 mm long; petals 2.6-3.6 mm long, white, corolla appendages white, 1.4-1.5 mm long. Staminal filaments 1.3-1.6 mm long; anthers 0.8-0.9 mm long. Style 1.4-1.5 mm long; ovary 2-3-locular.

Capsules with cupular hypanthium, 3-4 mm long, 3.5-4.8 mm diameter, teeth 4 or 6. Seeds 0.45-0.55 mm long.

Features not available.

Endemic to NEQ, occurs in the Walsh's Pyramid area south of Gordonvale, and near Butchers Creek Falls. Grows in open forest on rock outcrops and on the edges of rainforest.

Argophyllum lejourdanii var. cryptophlebum F.M.Bailey, The Queensland Flora 2: 533 (1900). Type: "Queensland. Cook District: Mulgrave River, Bellenden Ker Expedition, in 1889, F.M. Bailey s.n. (holo: BRI [AQ200726])."