GRASSES. 371 
ing glume two-thirds of the length of the empty ones. From the latter it is distin- 
guished by the more slender branches of the panicle, with the spikelets less crowded 
above the middle of the branches, the smaller spikelets, thinner empty glumes with 
the midrib less prominent and Jess scabrous, and the perfectly smooth flowering 
glumes. 
ALABAMA: Coast plain. Low shady banks, borders of woods; in close damp soil. 
Mobile County. September to October; frequent. Perennial. 
Type locality: “Common in damp places, in thickets and along the borders of 
woods.” 
Herb. Geol. Surv. Herb. Mohr. 
Agrostis altissima (Walt.) Tuckerm. Am. Journ. Sci. 45:44. 1843. 
TALL BENT GRAss, 
Cornucopiae altissima Walt. Fl. Car. 74. 1788. 
Agrostis elata Trin, Mem. Acad. St. Petersb. ser. 6, pt. 2: 364. 1845, 
Trichodium elatum Pursh, Fl. Am. Sept. 1:61. 1814. 
Gray, Man. ed. 6,648. Chap. P1551. Wats. Bot. Calif. 2: 274. 
Alleghenian, Carolinian, and Louisianian areas. New England and New York to 
North Carolina; California, 
ALABAMA: Low shaded banks and borders of swamps. Mobile County, October; 
infrequent. 
Type locality: South Carolina. 
Herb. Geol. Surv. Herb. Mohr. 
CALAMAGROSTIS Adans. Fam. Pl. 2:31. 1763. 
About 120 species, temperate zone; North America, 51 species. 
Calamagrostis cinnoides (Muhl.) Scribner, Mem. Torr. Club, 5:42, 1894, 
REED BENT GRass. 
Arundo cinnoides Muhl. Gram. 187. 1817. 
Calamagrostis nutialliana Steud. Syn. Pl. Gram. 190, 1855, 
Gray, Man. ed. 6,650, Chap. F1.553. Scribner, Grass. Tenn. 2 : 80, ¢. 27, f. 105. 
Alleghenian and Carolinian areas. New England, Pennsylvania, New Jersey to 
North Carolina and eastern Tennessee. 
ALABAMA: Tennessee Valley. Mountain region, Lower hills. Moist woodlands. 
Cullman, Landerdale, and Tuscaloosa counties. June, July; notcommon. Perennial. 
Type locality: ‘‘ Hab. locis siccis et sphagnosis, floret Augusto, Penns. Massachuss,” 
Herb. Geol. Surv. Herb, Mohr. 
HOLCUS L. Sp. Pl. 2:1048. 1753, 
Low annuals. Eight species. Temperate regions, Europe, Africa. 
Holcus lanatus L. 8p. Pl. 2: 1048. 1753. VELVET GRASS. 
Gray, Man. ed. 6, 652. Wats. Bot. Calif. 2:299. Scribner, Grass. Tenn. 2:81, ¢. 
27, f. 106. 
Introduced from Europe. Naturalized from Canada to the Gulf, and in California 
and Mexico. 
ALABAMA: Adventive with grass seed. Mobile County; escaped trom cultivation, 
Cullman County. May; infrequent. Perennial. 
Type locality: ‘‘Hab. in Europae pascuis urenosis.” 
Economic uses: Of some value for hay or pasture on poor land. 
Herb. Geol. Surv. Herb. Mohr. 
AIRA 1. Sp. Pl. 1:63. 1753. 
Six species; Kurope and North Africa. 
Aira caryophyllea L. Sp. Pl.1: 66. 1753. SILVERY Hair Grass, 
Gray, Man. ed. 6, 653. 
Evropr, NORTH AFRICA, CHILE, 
Naturalized. Ontario, Vancouvers Jsland; New England to New Jersey, and 
Tennessee. 
ALABAMA: Dry pastures and openings in the woods. Rather local; extensively 
spreading of late years. Abundant where it occurs. Cullman County. Lee County, 
Auburn (Baker §° Earle). Mobile County, Springhill. April. Annual. 
Type locality: ‘‘Hab.in Angliae, Germaniae, Galliae, glareosis.” 
Herb. Geol. Surv. Herb. Mohr. 
