Country of Origin: northern South America, naturalized in Central America & Caribbean
Habitat: climbing shrub
Description: Stout, glaucous lianas. Leaves glabrous, broadly cordate, obtuse at the apex, 7-15 cm broad, 7-12 cm long, green above, beneath gray. Pseudostipules large, sessile, amplexicaul, ruffled. Flowers solitary in the leaf axils, ebracteolate, geniculate, mottled red, yellow, green and purple, the utricle subglobose, 7 cm long, syrinx absent, the tube straight, emerging from the side of the utricle at a sharp angle, 4 cm long, annulus absent, the limb with 2 superposed lobes, the upper lobe obovate-spatulate, not deflected, 4-5 cm wide, 8 cm long, the lower lobe stiffly
erect, narrowly lanceolate, 16-20 cm long. Gynostemium 6-lobed, the lobes spreading-coroniform, 1 cm high, 8 mm broad, the anthers 2.5-3.0 cm wide, dehiscence acropetal, septifragal, the hypanthium present, bent. Seeds numerous, narrowly cordate, flat, 7 mm wide, 12 mm long, 0.2 mm thick. 1
USDA Zone: 10a-11
Accession # 198500199
March 2017 - This accession is undocumented, its long-standing presence (pre-1985) in the living collection and the presence of (3) greenhouse herbarium specimens dating to May, 1968 are likely one and the same. The herbarium also contains one specimen collected in June 1967 as Aristolochia ringens, but subsequently determined as Aristolochia hians. The possibility exists that the original 1967 specimen was also brought into the greenhouse collection at that time, but has retained the Aristolochia ringens ID.