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