A REVISION OF TRISETUM AND GRAPHEPHORUM (POACEAE: POOIDEAE: AVENINAE) IN NORTH AMERICA NORTH OF MÉXICO

• Main Authors: Paul M. Peterson, Victor Lfinot, Robert J. Soreng, Fernando O. Zuloaga
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Canada; Greenland
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.485.576; http://si-pddr.si.edu/dspace/bitstream/10088/4461/1/11_Finot-etal_Trisetum-Graphephorum_1419-1453.pdf

A taxonomic treatment of Trisetum Pers. and Grapitephorum Desv. in North America north of México is given. Eight species of Trisetum are recognized. Two species are endemic to the United States: T. orthochaetum (Montana) and T. projectum (California, Montana, and Nevada); Trisetum cernuum subsp. cernuum, T cernuum subsp. canescens, T montanum, T. sihiricum, T. spicatum van spicatum, and T. spicatum van pilosiglume are found in Canada and the United States; and T. spicatum var spicatum and T. spicatum var pilosiglume are found in Greenland. Two species, T. aureum and T. Jlavescens, are introduced. Trisetum florihundum Pilg. is chosen as a lectotype for Trisetum sect. Aulacoa Louis-Marie. The genus Graphephorum comprises only two species: G. melicoides ranging from Canada to the United States and G. wo!/ii endemic to the United States. RESUMEN