trisetum

plural trisetums

1. Any of various grasses of the genus Trisetum.

   The trisetums are tufted perennial grasses (rarely annuals) with flat leaves and loose panicles.

   1924, Arthur William Simpson, Native American Forage Plants, page 185

   2 more examples

   The species of trisetum found in the Western States have similar palatability and are all fairly good to good forage, although somewhat less palatable to sheep than to cattle and horses.

   1937, William Adams Dayton, Range Plant Handbook, United States Forest Service

   Of the five trisetums in California only two species — nodding trisetum and spike trisetum — are abundant enough to be important forage producers.

   1950, Bulletin - California Agricultural Experiment Station, numbers 716-747, page 80