Australian Tropical Rainforest Plants - Online edition

Pleogyne australis Benth.


Slender Vine
Click/tap on images to enlarge
Herbarium sheet with flowers. CC-BY: ATH.
Herbarium specimen: flowers. CC-BY: ATH.
10th leaf stage seedling. CC-BY: ATH.
Family

Bentham, G. (1863), Flora Australiensis 1: 59. Type: "Queensland. Keppel Bay, R. Brown; Moreton Bay, A. Cunningham, F. Mueller; Fitzroy river, F. Mueller."

Stem

Slender woody climber, stems twining. Buds and young stems densely hairy with pale grey/brown simple hairs.

Leaves

Leaves simple, alternate. Stipules absent. Petiole 3-30 mm long, ± swollen at junction with leaf blade (less obvious in dry specimens), densely to sparsely hairy, occasionally very shallowly peltate. Leaf blades ovate to broad-ovate, lanceolate to oblong-elliptic, palmate, 4-13 cm long, 2.5-7.5 cm wide, base rounded or ± cordate, margin entire (juveniles ± coarsely toothed in basal half), apex obtuse or acute, sometimes with a mucro. Lateral veins 3-6 pairs. Upper surface hairy to sparsely hairy above, lower surface densely hairy to sparsely hairy below.

Flowers

Inflorescence axillary, tomentose, male inflorescence paniculate, female inforescence subracemose. Flowers unisexual and plants dioecious, actinomorphic, 3-merous, small, < 2 mm diam. Pedicels short or subsessile. Sepals 12-15, 1.5-2 mm long, in whorls of 3, outer 9-12 sepals smaller than inner 3, inner whorl largest and yellowish; petals 6, much smaller than sepals, 0.5-0.75 mm long, dimorphic. Male flowers with 3 stamens, 3 petals alternating with the stamens with lateral auricles, 3 petals opposite the stamens with a pair of gland-like swellings on the inner surface. Female flowers (not seen), without staminodes; carpels 6, free (gynoecium apocarpous), ovaries superior; style subulate, recurved; ovules two per ovary.

Fruit

Fruit fleshy, a drupe (1-6 develop from a single flower), each compressed-globose, 5-11 mm diam., at first yellow, turning reddish or black when ripe, hairy; stone solitary in each drupe, seed solitary, slightly curved or bean shaped.

Seedlings

Features not available.

Distribution and Ecology

Occurs in NEQ (Paluma Range near Townsville), CEQ and southwards to south-eastern Queensland. Habitats include Araucarian vine forest, rainforest and vine thickets.

Natural History & Notes

This profile information and associated coding has been adapted from Cooper & Cooper (2004), Forman (2007), Harden et al. (2014) and Kessler (1993).

Synonyms
Microclisia australis (Benth.) Benth. ex Miers, The Annals and Magazine of Natural History, series 3 19: 325, (1867). Pleogyne cunninghamii Miers,  The Annals and Magazine of Natural History, series 3 19: 324, (1867). Type: "In Australia boreali: v.s. in herb. Heward, Cambridge Gulf (A. Cunningham, 469).
RFK Code
2698
Copyright © CSIRO 2020, all rights reserved.