Australian Tropical Rainforest Plants banner
  • Species information
  • About
  • Resources
  • Home
banner
ABCDEFGHIJKLMNOPQRSTUVWXYZ

Aristolochia acuminata

Family

Aristolochiaceae

Botanical Name

Aristolochia acuminata Lam.

Lamarck, J.B.A.P de Monnet (1783) Encycl. 1: 254. Type: India, Commerson.Holo: P.

Synonyms

Aristolochia indica var. magna Benth., Flora Australiensis 6: 209(1873), Type: Queensland. Endeavour river, Banks and Solander (Herb. R. Brown), Syn: BM?; Rockingham Bay, Dallachy. Syn: MEL. Aristolochia tagala Cham., Linnaea 7: 207(1832), Type: Luconia prope Tierra alta..

Common name

Birthwort, Indian; Native Dutchman' Pipe; Indian Birthwort

Stem

Vine stem diameters to 3 cm recorded. Distinct rings of bark included in the wood. Blaze odour may resemble that of potatoes (Solanum tuberosum).

Leaves

Leaf blades about 9-28 x 4.5-16.5 cm, petioles about 2-6 cm long, shallowly grooved in the upper surface, usually twisted towards the base. Leaves usually with 3-5 veins radiating from the base. Stems longitudinally ribbed from the decurrent petiole base. Leaf blades slightly aromatic or unpleasantly perfumed when crushed.

Flowers

Ovary (hypanthium) 6-ribbed, about 10-13 mm long. Perianth tube consisting of an inflated base (attaining a diameter of about 7-8 mm), constricted above the base to form a tube about 10 x 1.5 mm and then flared at the apex to a diameter of about 5-6 mm. Apical lobe about 20-30 x 7 mm. Stamens 6, fused together to form a structure about 3 x 4 mm. Stigmas 6. Ovary 6-locular. Ovules numerous in each locule.

Fruit

Capsules ellipsoid, about 3.5-4 x 2.5 cm before dehiscence. Following dehiscence the capsule resembles a parachute supported by strings about 5 cm long. Seeds numerous, stacked in columns. Each seed about 8-9 x 6-10 mm with a wing about 1-2 mm wide all around the margin. Embryo about 0.5-0.7 mm long.

Seedlings

Cotyledons broadly oblong-elliptic, ovate to almost orbicular, about 12-15 x 9-12 mm, petioles hairy, about 3-4 mm long. First leaves ovate, minutely hairy, margins entire, venation depressed on the upper surface. Third leaf cordate. At the tenth leaf stage: leaf blade cordate to narrowly cordate, apex acuminate. Midrib depressed on the upper surface. Crushed leaves emit a strong unpleasant odour.

Distribution and Ecology

Occurs in WA, CYP and NEQ. Altitudinal range from near sea level to 500 m. Grows in rain forest and monsoon forest. Also occurs in SE Asia, Malesia, New Guinea & Solomon Islands.

Natural History

Food plant for the larval stages of the Cape York Birdwing and Red Bodied Swallowtail Butterflies. Common & Waterhouse (1981).

WA

X

CYP

X

NEQ

X

Vine

X

RFK Code

2092