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Gunnessia pepo

Family

Apocynaceae

Botanical Name

Gunnessia pepo P.I.Forst.

Forster, P.I. (1990) Austrobaileya 3(2): 282. Type: 1 km S of Cape York, 10 42 S, 142 32 E, 11 February 1986, B.Gray 4268; holo: QRS; iso: BRI.

Synonyms

Aristolochia sp. (Mt Lewis), Climbing Plants of Australia: 154(1988), Type: ?.

Stem

A slender vine not exceeding a stem diameter of 2 cm.

Leaves

Twigs laterally compressed. Leaves, twigs and petioles produce a milky exudate. Leaf blades about 5-15 x 2-16 cm, petioles about 1.5-10 cm long, grooved on the upper surface. Lateral veins forming loops inside the blade margin at least towards the apex. Both the upper and lower leaf blades surfaces clothed in short pale-coloured hairs, curved or crisped, often rather sparsely so. A narrow band of hairs usually extending from the point of attachment of each petiole of a leaf pair up the stem to the next pair of leaves. A similar narrow band of hairs usually extends across the stem between the points of attachment of the petioles of each leaf pair. Colleters about 10-15 per leaf.

Flowers

Inflorescence a very compressed raceme or umbel, much shorter than the leaves and usually shorter than the petioles. Pedicels up to 6 mm long. Sepals (or calyx lobes) about 1-1.5 mm long. Corolla disciform, about 3-4 mm high and 15-17 mm diam. Corolla lobes recurved, about 1 mm long. Stigma immersed in the head containing the anthers. Pollen aggregated in pollinia.

Fruit

Fruits about 9 x 1.5-2.5 cm, fusiform, apex pointed. Seeds numerous, about 6-7 mm long, plumes about 25-35 mm long. Embryo about 4.5-5 mm long. Cotyledons wider than the radicle. Cotyledons about 3 mm long, radicle about 2 mm long.

Seedlings

Features not available.

Distribution and Ecology

Endemic to Queensland, occurs in CYP and NEQ. Altitudinal range from near sea level to 100 m. Grows in vine thicket, monsoon forest and rain forest.

CYP

X

NEQ

X

Slender Vine

X

RFK Code

2667