Turbina cordata
Nomenclature
Turbina cordata (Choisy) Austin and Staples,J. Arnold Arbor. 64: 488. 1983; emend. J.Arnold Arbor. 67: 263. 264. 1986.
Rzvea cordata Choisy in DeCandolle, Prodr. 9: 326.1845. Type: Brasil, Minas Gerais, in sylvis catingasad fluv. Sari Francisco prope Salgado, Aug.,Martius s.n. [86] (lectotype M!; photos A!, FAU!).
Ipomoea martii Meisner zn C. Martius, F1. bras. 7:258. tab. 96. 1869. Type: as for Rcvea cordataChoisy.
Description
Bulletin of the Torrey Botanical Club, Vol. 118, No. 3. (Jul. - Sep., 1991), pp. 265-280.
Biogeography, Ecology and Natural History
This species is found in southeastern Brazil in the planalto region of Bahiá, Goiás, Distrito Federal, Minas Gerais and Mato Grosso
The plant is a liana that climbs 10-12 mtall, covering trees, and has been reported by collectors from cerrado, campo, caatinga, and dry shrubland habitats, as well as marshy ground along water courses, at elevations ranging from 550-2000 m. The single mention of soil type reports gravel as the substrate.
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Bulletin of the Torrey Botanical Club, Vol. 118, No. 3. (Jul. - Sep., 1991), pp. 265-280.
Other information
Authorship for webpage
Turbina cordata is distinguished by its oblongsepals that are silvery sericeous on the abaxial side, usually even in the fruiting stage. It is mostsimilar to T. abutiloides, which has virtually glabrous sepals, however.
The ranges for these twotaxa are quite disjunct as well. Turbina cordatais at first glance similar to T. amazonica. The sericeous interplicae on its corolla are unmistakablein comparison to the virtually glabrous corolla of T. amazonica, however, The single Peruvian collection here referred to this species differs in having, overall, more mucronate and less pubescent outer sepals than typical Brazilian material. In these characters thespecimen stands between T. cordata and T. abutiloides,though more strongly resembling the former.The specimen is provisionally placed with T. cordata. More collections from southern Peru, Bolivia, and western Brazil would be interestingin terms of the possible intergradation between these two species that is suggested by this one collection.
The lectotypification for this name has been discussed earlier (Austin and Staples 1983, 1986).The species was illustrated by Meisner (1869,tab. 96) under his illegitimate name for it, Ipomoea martii