Australian Tropical Rainforest Plants - Online edition

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


Shrub (woody or herbaceous, 1-6 m tall)
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A. flowering branchlet x0.6. B. hair from upper leaf surface x40. C. lamina margin x2. © Queensland Government
Family

Bean, A.R. & Forster, P.I. (2018) Austrobaileya 10(2): 219-221, Fig. 4A-C, Map 2. Type: "Queensland. Cook District: Mt Hedley, 3 km ENE of Rossville, Timber Reserve 165, 15 April 1999, P.I. Forster PIF24277 & R. Booth (holo: BRI [2 sheets + spirit]; iso: AD, CNS, K, L, MEL, NSW, US)."

Stem

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

Leaves

Petiole 10-15 mm long; fully expanded lamina elliptical, 89-174 mm long, 30-53 mm wide, 2.8-4.5 times longer than wide; 8-11 secondary veins on either side of midrib. Lamina apex acuminate; base cuneate, not oblique or occasionally oblique by up to 5 mm. Lamina margins denticulate, with teeth all about the same length, 30-49 on each side of the lamina, the teeth 0.3-0.7 mm long. Upper surface of fully expanded lamina green, glabrous or sparsely hairy; hairs appressed, 0.8-1.2 mm long. Lower surface of lamina white, hairs appressed; secondary veins white, raised; tertiary veins white, ± flush with indumentum.

Flowers

Inflorescences axillary, paniculate, 33-77 mm long, densely tomentose, primary axis 28-63 mm long, secondary branches 5-15 mm long, bracts narrowly-deltate, 1.3-2.9 mm long. Pedicels 1.5-3 mm long; flowering hypanthium cupular, 3.4-3.6 mm diameter. Calyx lobes 1.3-1.5 mm long; petals 3.2-3.5 mm long, white, corolla appendages white, c. 1.2 mm long. Staminal filaments 1.3-1.5 mm long; anthers c. 0.7 mm long. Style 1.3-1.5 mm long; ovary 2-locular.

Fruit

Capsules with cupular hypanthium, 3-3.3 mm long, 3.6-4.1 mm diameter, teeth 4. Seeds 0.45-0.6 mm long.

Seedlings

Features not available.

Distribution and Ecology

Endemic to NEQ, known from Mt Hedley south of Cooktown, and near Noah Creek. Grows on granite outcrops at the edge of rainforests.

RFK Code
3667
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