Synonyms: Pararistolochia APNI*
Description: Woody climbers with young branches ± glabrous to rusty-pubescent.
Leaves sometimes 3-veined from base, fine venation conspicuous, raised on both surfaces; petiole thickened and twisted, with base expanded into a horizontal ridge extending around the stem; pseudo-stipules absent or sometimes present.
Flowers borne on leafy shoots. Tubular calyx irregular with a single lobe or long lip, or 2-lipped with a broad standard and long keel. Anthers up to 6. Stigmatic lobes up to 6.
Capsule dehiscent, usually dehiscing upwards from the base of the pedicel; seeds numerous, cordate, flattened.
Distribution and occurrence: World: c. 120 spp., trop. & temp. regions. Aust.: 10 sp. (3 naturalized), Qld, N.S.W., N.T., W.A.
Text by G. J. Harden
Taxa not yet included in identification key
| ||Key to the species|| |
|1||Fruit dehiscent, short; perianth irregular with a single lobe (long lip), or 2-lipped with a broad standard and long keel; stigmatic lobes up to 6; anthers up to 6; flowers borne on leafy shoots||Aristolochia elegans|
|Fruit indehiscent, elongate, strongly ribbed; perianth regularly 3-lobed or irregular with 1 or 3 long tails from the mouth of the limb; stigmatic lobes 6–12; anthers 6–24; flowers mostly on the old wood||2|
|2||Leaves mostly 10–20 cm long, ovate to elliptic, base cordate or rounded, brown hairs scattered on veins on lower surface||Aristolochia praevenosa|
|Leaves usually 5–10 cm long, lanceolate to narrow-elliptic, base ± truncate to slightly cordate, glabrous|
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