Systematics of Tribe Rhexieae
Document Type
Article
Publication Date
1-1-2022
Publication Title
Systematics, Evolution, and Ecology of Melastomataceae
Abstract
Tribe Rhexieae comprises the genera Rhexia (13 species), Pachyloma (four species), and Arthrostemma (four species). The clade is characterized by 4-merous flowers, elongate, urceolate, or non-urceolate hypanthia enveloping a loculicidal capsule, and rhexioid seeds, i.e., cochleate, with multicellular tuberculae (these often forming concentric ridges), and the surface usually papillose. Staminal pedoconnectives and appendages (dorsal and/or ventral) may be present or absent. Polyploidy is known to be evolutionarily significant in both Rhexia and Arthrostemma. Arthrostemma is distributed natively in Mexico, Central America, and South America; Pachyloma is endemic to the Guiana Shield region; and Rhexia is the only genus of Melastomataceae with a mainly North American cool to warm temperate distribution.
Department
Biological and Environmental Sciences
First Page
373
Last Page
384
DOI
10.1007/978-3-030-99742-7_18
Recommended Citation
Judd, Walter S. and Ionta, Gretchen M., "Systematics of Tribe Rhexieae" (2022). Faculty and Staff Works. 525.
https://kb.gcsu.edu/fac-staff/525