Rare Plant Field Guide

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Photo Copyright © 1999 by B. Jennings Poaceae (Grass Family) Look Alikes: The plant vegetatively resembles Poa annua, but P. algida leaves are very short, usually less than 1 cm. Also, P. algida has only one floret per spikelet and the glumes are tiny and unequal, with the first glume sometimes missing. Flowering/Fruiting Period: Fruits mid July-September. Habitat: Cold gravels of snowmelt streamlets; saturated sand at inlets to alpine lakes. Elev. 11,700-14,000 ft. Photo Copyright © 1999 by B. Jennings Distribution: Northern Asia, Scandinavia, Greenland, Canada, Alaska, Montana, NW Wyoming and disjunct in Colorado (Boulder, Clear Creek, Park and Summit Cos.). References: Hultén 1968, Weber 1952, Welsh 1974. Please send comments to: Colorado Natural Heritage Program 254 General Services Building, Colorado State University · Fort Collins, CO 80523 · (970) 491-2992