Agrostis capillaris L.
Synonym: Agrostis tenuis
Coefficient of Conservatism: *
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Ad P-Grass

Agrostis capillaris spikelet B. S. Walters spikelet

A. tenuis of Michigan Flora.

Introduced from Europe and widely planted as a lawn grass in the northeastern U. S., but only rarely collected as a presumed escape in Michigan, in fields and dry forests. First collected in Keweenaw Co. in 1887.

Some of our specimens seem to have ligules a little long for this species, in which they are normally about 1 mm. Ordinarily, small specimens of A. gigantea will differ in their longer ligules, leaf blades wider and usually longer on the upper part of the culm, and a tendency for the panicle branches to have spikelets near their base, while in A. capillaris the panicle branches have no spikelets toward their base and there is no elongate rhizome. From occasional specimens of A. stolonifera, which may have shorter ligules than usual, A. capillaris tends to differ in its erect culms, reddish panicle, and more spreading panicle branches.


Baraga County
Crawford County
Kalamazoo County
Keweenaw County
Marquette County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. August 19, 2022.