Systematics Section / ASPT
Wolfe, Andrea D. , Arguedas, Nidia .
Patterns of evolution in Hyobanche L. (Orobanchaceae), part II.
Hyobanche L. (Orobanchaceae) is a holoparasitic genus endemic to southern Africa from the Cape Floristic Province northward to Namibia. Two species complexes consisting of species having similar morphological characters makes identification of some taxa problematic. Hyobanche glabrata, H. rubra, H. barkleyi, and H. robusta have straight corolla tubes and occur in alpine, coastal, or desert regions ranging from the Drakensberg and highlands of Lesotho to the Karoo, Namaqualand and Namibia. The other species complex consists of species with hirsute and galeate corollas, and includes Hyobanche sanguinea, H. atropurpurea, H. fulleri and several species yet to be described. Species in this complex occur in a range of habitats from sand dunes to mountain rock outcrops throughout southern Africa. Previous phylogenetic studies reveal these two complexes as sister groups, but have been unable to robustly resolve relationships within the groups. ISSR markers were used in this study to elucidate the species relationships and biogeographic patterns of morphological characters within the genus.
1 - Ohio State University, Depatment of Evolution, Ecology and Organismal Biology, 318 W. 12th Ave., Columbus, Ohio, 43210-4321, United States
Presentation Type: Paper
Location: Cottonwood A (Snowbird Center)
Date: Wednesday, August 4th, 2004
Time: 3:45 PM