Spike Bentgrass

Agrostis exarata Trin. Gram. Unifl. 207. 1824
Agrostis exarata var. minor Hook. Fl. Bor. Am. 2: 239. 1839. (Type from Rocky Mountains.) Agrostis grandis Trin. Mem. Acad. St.-Petersb. VI. 6 2 : 316. 1841. (Type from "Columbia
{Hooker)" [Columbia River, received from Hooker].) Agrostis asperifolia Trin. Mem. Acad. St.-Petersb. VI. 6 2 : 317. 1841. (Type from North America.) Agrostis Scouleri Trin. Mem. Acad. St.-Petersb. VI. 6 2 : 329. 1841. (Type from Nootka Sound,
Vancouver Island.) Agrostis albicans Buckl. Proc. Acad. Phila. 1862: 91. 1863. (Type from Columbia woods, Oregon.) Agrostis exarata f. asperifolia Vasey, Bull. U. S. Dep. Agr. Bot. 13: pi. 31. 1892. (Presumably based
on A. asperifolia Trin.) Agrostis filiculmis M. E. Jones, Contr. West. Bot. 14: 13. 1912. (Type from Little DeMotte Park
on the Kaibab, northern Arizona, Jones 6056 bb.)
Short-lived perennial ; culms in small tufts, erect or somewhat geniculate at base, glabrous, rather leafy, 20-120 cm. tall; sheaths glabrous or somewhat scabrous; ligule prominent; blades flat, 1-8 mm. wide, scabrous; panicle narrow, from somewhat open to close and interruptedly spikelike, 5-25 cm. long; glumes acuminate or awn-pointed, nearly equal, scabrous on the keel and often scaberulous on the back, 2.5-4 mm. long; lemma about 2 mm. long, awnless or bearing from about the middle of the back a straight or bent exserted awn, the callus glabrous; palea less than 0.5 mm. long.
Type locality: Unalaska, Alaska.
Distribution: Moist or rather dry open ground, at low and medium altitudes, western Nebraska to Alberta and Alaska, and southward to New Mexico, California, and Mexico.

Agrostis longiligula Hitchc. Bull. U. S. Dep. Agr. PI. Ind. 68:
54. 1905.
Perennial, usually rather leafy; culms erect, cespitose, glabrous, 50-70 cm. tall; leaves of the culm about 4, the sheaths glabrous; ligule 5-8 mm. long; blades flat, scabrous, 10-15 cm. long, usually 3-4 mm. wide, sometimes narrower; panicle bronze-purple, oblong, loosely flow ered, 10-15 cm. long, the branches very scabrous, the spikelets somewhat crowded toward the ends, the lower verticillate, as much as 5 cm. long; glumes acute, scabrous on the keel, slightly unequal, the lower longer, 3-4 mm. long; lemma about 2.5 mm. long, bearing at the middle an exserted bent awn; palea minute.
Type locality: Fort Bragg, California {Davy & Blasdale 6110).
Distribution: Bogs and marshes at low altitudes, Tillamook County, Oregon, to Mendocino Countv, California.

Agrostis durangensis Mez, Repert. Sp. Nov. 17: 301. 1921
Perennial; culms cespitose, erect, glabrous, about 3-noded to or above the middle, 60-80 cm. tall; sheaths glabrous or slightly roughened; ligule 2-4 mm. long; blades scabrous, those of the culm flat, about 1 mm. wide, of the innovations more or less involute; panicle narrow, rather loose, pale or purplish, 10-15 cm. long, the axis glabrous or nearly so, the branches verticillate, ascending or somewhat appressed, naked below, scabrous, the spikelets crowded on the upper part, the lateral pedicels less than 1 mm. long; glumes acuminate, scabrous on keel and back, about 2.5 mm. long; lemma slightly scabrous, a little shorter than the glumes, awnless, the callus glabrous; palea about one third as long as the lemma.
Type locality: Durango {Palmer, presumably 190). Distribution: Wet places, Durango and Federal District, Mexico.

Agrostis berlandieri Fourn. Mex. PL Gram. 96. 1886
Culms ascending, 20-30 cm. tall; blades flat, about 2 mm. wide; ligule 3 mm. long; panicle more or less included in the uppermost sheath, contracted, 7-10 cm. long, the branches subverticillate, some floriferous from the base, the longer from the middle; glumes rather broad, nearly equal, acute, scabrous on the keel, about 1.7 mm. long; lemma as long as the glumes, awnless; palea wanting.
Type locality: Totoniho, Mexico {Berlandier 531). Distribution: Known only from the type collection.