Argophyllum curtum A.R.Bean & P.I.Forst.
Bean, A.R. & Forster, P.I. (2018) Austrobaileya 10(2): 214-215, Fig. 1D-F, Map 2. Type: "Queensland. Cook District: Freshwater Forest Reserve, Lake Morris road, 12 May 2005, P.I. Forster PIF30959 & R. Jensen (holo: BRI [2 sheets + spirit]; iso: CNS, L, MEL, NSW)."
Shrub 2-5 m high. Hairs on new growth rusty or brown; hairs more than 10 cm from growing point white or creamy.
Petiole 13-28 mm long; fully expanded lamina elliptic to broadly-elliptic, 109-170 mm long, 42-70 mm wide, 2.3-3.3 times longer than wide; 6-9 secondary veins on either side of midrib. Lamina apex shortly acuminate or acute; base cuneate, not oblique or occasionally oblique by up to 4 mm. Lamina margins denticulate, with teeth all about the same size, 23-38 on each side of the lamina, the longer teeth 0.3-1 mm long. Upper surface of fully expanded lamina green, glabrous. Hairs on upper surface of developing leaves appressed, 0.3-0.6 mm long. Lower surface of lamina white or creamy-coloured, hairs appressed; secondary veins brown to creamy, raised; tertiary veins creamy, ± flush with indumentum.
Inflorescences axillary, paniculate, 35-93 mm long, densely tomentose, primary axis 30-82 mm long, secondary branches 9-32 mm long, bracts narrowly-deltate, 1.8-5 mm long. Pedicels 0.5-3 mm long; flowering hypanthium cupular, 2.6-3.5 mm diameter. Calyx lobes 0.9-1.4 mm long; petals 2.3-3.2 mm long, white, corolla appendages white, c. 1.3 mm long. Staminal filaments 1-1.2 mm long; anthers 0.7-0.8 mm long. Style c. 1.2 mm long; ovary 2-locular.
Capsules with hemispherical hypanthium, 2.8-3.5 mm long, 4.3-5.5 mm diameter, teeth 4, exserted. Seeds 0.45-0.55 mm long.
Cotyledons orbicular about 2-3 x 1.5-2 mm, petioles about 1 mm long. First leaf sparsely hairy, produced very close to the cotyledons so that it could be mistaken for a third cotyledon. Cotyledonary petioles shorter than the cotyledons. At the tenth leaf stage: leaf blade underside densely clothed in mainly white and hairs, veins on underside with mainly brown hairs, leaf blade upperside sparsely hairy with flat T-shaped hairs, stem densely clothed in mainly brown hairs. Marginal teeth variable in size. Seed germination time 42 days.