Petaladenium

Taxonomy

Petaladenium W.A. Ducke Arq. Inst. Biol. Veg. 4: 20. Jun 1938.

Subfamily: Faboideae.
Phylogenetic Number: 3.2.25.
Tribe: Sophoreae.
Group: Dussia.
Species Studied - Species in Genus: 0 studied; 1 in genus.

Description

Symmetrical; linear oblong; compressed; tapered at apex; long stipitate.

Distribution

Brazil (Rio Negro).

New World; South America (Brazil, Rio Negro); Brazil.

Generic Notes

The only data we have was taken from literature.

Tribal Notes

Tribe Sophoreae

Polhill (1981b) stated that the Sophoreae s.l. is a tribe of convenience between the Caesalpinioideae and the bulk of the Papilionoideae, sharply defined from neither. He transferred four genera from Sophoreae into the Swartzieae (1), Amburana (3.1.15), Ateleia (3.1.13), Cyathostegia (3.1.14), and Holocalyx (3.1.12), following Herendeen's (1995) cladistic analyses. Herendeen performed cladistic analyses for all Swartzieae genera, sensu Cowan (1981), 19 Sophoreae genera, and three Caesalpinioideae genera. He concluded that Swartzieae is polyphyletic and that it should be disbanded and its genera transferred to Sophoreae. Preliminary rbcL data (Doyle et al. 1997) supported his conclusions.