.A revision of Trisetum and Graphephorum (Poaceae: Pooideae: Aveninae)

FINOT, V. L., PETERSON, P. M., SORENG, R. J. & ZULOAGA, F. O.

SIDA, CONTRIBUTIONS TO BOTANY

Botanical Research Dept., Institute of texas

Lugar: Texas, EEUU; Año: 2005 vol. 21 p. 1419 - 1543

0036-1488

    ABSTRACTA taxonomic treatment of Trisetum Pers. and Graphephorum Desv. in North America north of Méxicois 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 cernuumsubsp. cernuum, T. cernuum subsp. canescens, T. montanum, T. sibiricum, T. spicatum var. spicatum,and T. spicatum var. 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.flavescens, are introduced. Trisetum floribundum Pilg. is chosen as a lectotype for Trisetum sect.Aulacoa Louis-Marie. The genus Graphephorum comprises only two species: G. melicoides rangingfrom Canada to the United States and G. wolfii endemic to the United States.