Australian Tropical Rainforest Plants - Online edition

Argophyllum lejourdanii F.Muell.

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

Mueller, F.J.H. von (1864) Fragmenta Phytographiae Australiae 4: 33. Type: Queensland. North Kennedy District: Mt Elliott, 4 August 1863, J. Dallachy s.n. (lecto: MEL 568352; isolecto: K 000739401).


Shrub or small tree 2-3 m high. Hairs on new growth rusty or brown; hairs more than 10 cm from growing point creamy-white.


Petiole 20-32 mm long; fully expanded lamina elliptical, broadly-elliptical or ovate, 122-173 mm long, 44-79 mm wide, 1.9-2.8 times longer than wide; 7-10 secondary veins on either side of midrib. Lamina apex acuminate or acute; base cuneate, not oblique or occasionally oblique by up to 5 mm. Lamina margins dentate to denticulate, with teeth about the same length, 15-49 on each side of the lamina, the teeth 0.5-2.2 mm long. Upper surface of fully expanded lamina green, sparsely hairy; hairs appressed, 0.8-1 mm long. Lower surface of lamina white, hairs appressed; secondary veins brown or white, raised; tertiary veins white, ± flush with indumentum.


Inflorescences axillary, paniculate, 39-101 mm long, densely tomentose, primary axis 23-90 mm long, secondary branches 8-24 mm long, bracts narrowly-deltate, 1.4-12 mm long. Pedicels 1-1.5 mm long; flowering hypanthium cupular, 2.8-3.1 mm diameter. Flowers about 4 mm diam. Calyx lobes 1.1-1.3 mm long; petals 2.6-3.5 mm long, white, corolla appendages white, 1.3-1.5 mm long. Staminal filaments 1.3-1.8 mm long; anthers c. 0.7 mm long. Style 1.3-1.7 mm long; ovary 2-locular, rarely 3-locular. Disk orange, surrounding the base of the ovary. Placenta attached to one side of the ovary and extending about half way across the cavity. Ovules numerous in each locule. Stigma +/- globular, green.


Capsules with hemispheric hypanthium, 2.4-3 mm long, 3.8-4.3 mm diameter, teeth 4 or rarely 6. Seeds 0.4-0.5 mm long. Testa reticulate. Embryo very small, about 0.2 mm long.


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Distribution and Ecology

Endemic to Queensland, occurs in NEQ and northern part of CEQ, from Murray Falls near Cardwell to Mt Elliot, south of Townsville. Altitudinal range from 50-600 m. Usually grows in open forest but also occurs on rain forest margins and in permanent openings in rain forest caused by factors such as rock slabs and outcrops particularly on granite substrates.

Argophyllum lejourdanii F.Muell. var. lejourdanii, The Queensland Flora 2: 533 (1900).
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