Agrostis bourgaei E. Fourn.

Agrostis thyrsigera Mez, Repert. Sp. Nov. 17: 301. 1921
Perennial; culms erect from an ascending base, loosely cespitose, glabrous, 20-60 cm. tall; sheaths glabrous or nearly so; ligule 2-5 mm. long; blades flat, scabrous, those of the culm mostly less than 7 cm. long, 1-3 mm. wide; panicle narrow, open, 5-25 cm. long, the axis glabrous below, the branches in rather distant verticils, unequal, capillary, ascending or appressed, scabrous, naked below, several-flowered, the lateral pedicels shorter than the spikelets; glumes acute, scabrous on the keels, about 2 mm. long; lemma 1.5 mm. long, awnless; palea about one fourth to one third as long as the lemma.
Type locality: State of Mexico (Pringle 4251, 4485, 11209). Distribution: State of Mexico.

Agrostis bourgaei Fourn. Mex. PL Gram. 95. 1886
Perennial, without creeping rhizomes; culms erect, usually retrorsely scaberulous below the nodes, antrorsely scabrous below the panicle, several-noded below the middle, 60-120 cm. tall; sheaths usually more or less scabrous; ligule 3-4 mm. long; blades flat, scabrous, 2-5 mm. wide; panicle open, purplish, rather narrow, mostly 15-25 cm. long, the axis scabrous, the branches ascending or spreading, slender, scabrous, naked on the lower half, the lower in verticils, the verticils about 5 cm. apart; spikelets somewhat crowded on the branchlets; glumes slightly unequal, acute, rather conspicuously scabrous on the keels, about 2 mm. long; lemma glabrous, obtusish, awnless, or rarely with a short straight awn, 1.5-1.8 mm. long, the callus glabrous; palea about 0.5 mm. long.
Type locality: Near Mexico City (Bourgeau 682). Distribution: Along ditches. Federal District. Mexico.