Australian Tropical Rainforest Plants - Online edition

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

Shrub (woody or herbaceous, 1-6 m tall)
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Flower. © R.L. Jago
Flower. © R.L. Jago
Flowers. © CSIRO
Leaf underside. © R.L. Jago
Leaf upperside. © R.L. Jago
Scale bar 10mm. © CSIRO
10th leaf stage. © CSIRO
A. flowering branchlet x0.5. B. lamina margin x2. C. hair from upper leaf surface x60. © Queensland Government
E. side view of fruit x12. © Queensland Government

Bean, A.R. & Forster, P.I. (2018) Austrobaileya 10(2): 224-225, Figs. 5A-C, 8E, Map 1.  Type: Queensland. North Kennedy District: Stony Creek, near Wallaman Falls, west of Ingham, 12 August 1951, S.T. Blake 18791A (holo: BRI; iso: CANB, K, MO).


Shrub or small tree 2–3.5 m high. Hairs on new growth white or creamy; hairs more than 10 cm from growing point creamy-white.


Petiole 16–24 mm long; fully expanded lamina elliptical, broadly-elliptical or ovate, 108–178 mm long, 43–73 mm wide, 1.7–2.8 times longer than wide; 7–9 secondary veins on either side of midrib. Lamina apex acuminate; base cuneate, not oblique or occasionally oblique by up to 12 mm. Lamina margins dentate, with teeth all about equal in length or sometimes varying in length (alternating long and short), 12–87 on each side of the lamina, the longer teeth 0.8–3.5 mm long. Upper surface of fully expanded lamina pale green, with a moderately dense indumentum of biramous hairs, the arms obliquely ascending, the longer arm 0.4–0.6 mm long, the shorter arm 0.1–0.3 mm long. Lower surface of lamina white, hairs ascending (not appressed); secondary veins white or creamy, raised; tertiary veins white, ± flush with indumentum.


Inflorescences axillary, paniculate, 48–146 mm long, densely tomentose, primary axis 40–131 mm long, secondary branches 6–29 mm long, bracts narrowly-deltate, 2.2–7.5 mm long. Pedicels 0.5–1.2 mm long; flowering hypanthium cupular, 3.1–3.8 mm diameter. Calyx lobes 0.7–1.8 mm long; petals 2.1–3.2 mm long, white, corolla appendages white, 1–1.5 mm long. Staminal filaments 1.1–1.3 mm long; anthers 0.5–0.9 mm long. Style 0.9–1.1 mm long; ovary 2-locular.


Capsules with cupular hypanthium, 2.6–3 mm long, 3.8–4.5 mm diameter, teeth 4. Seeds 0.5–0.6 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 and veins densely clothed in mainly white hairs, stem and petioles densely clothed in white Y-shaped hairs. Marginal teeth variable in size. Seed germination time 70 days.

Distribution and Ecology

Endemic to Queensland, occurs in NEQ in two disjunct regions, in the northern region it occurs between Mossman and Cairns, and in the southern region it occurs west of Ingham. Altitudinal range from 100-1060 m. Grows in open forest or on rain forest margins and in stunted complex notophyll vineforest.

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