( 492 .) 
AGRO'STIS* *. 
Linnean Class and Order. TrtiA'NDRiAf, Digy'nia. 
Natural Order . Grami'ne^e, Juss. Gen. PI. p. 28. — Sm. Gram, 
of Bot. p. 86. ; Engl. FI. v. i. p. 71 . — Lindl. Syn. p. 293. ; Introd. 
to Nat. Syst. of Bot. p. 292. — Rich, by Macgilliv. p. 393. — Loud. 
Hort. Brit. p. 542. — Mack. FI. Hibern. p. 294. — Hook. Brit. FI. 
(4th edit.) p. 426. — Gramina, Linn. — Graminales; sect. Ff:s- 
tucina;; type, Agrostidace^e ; Burn Outl. of Bot. v. i. pp. 359, 
and 371 . 
Gen. Char. Inflorescence panicled. Panicle loose. Spihelets 
(tig. 1.) single-flowered. Calyx (see fig. 1.) of 2 rather unequal, 
pointed, keeled, folded, clasping, awnless, permanent glumes, longer 
than the corolla. Corolla (see fig. 2.) of 2 unequal, membranous, 
ribbed paleae, unchanged after flowering, with a tuft or two of hairs 
at the base ; the larger palea bearing, constantly in some species, 
a rough, dorsal awn, which in others is most generally wanting ; 
the smaller palea constantly awnless, more membranous, various in 
size, and occasionally wanting. Nectary of 2 minute scales, some- 
times combined. Filaments (see figs. 1 & 2.) 3, hair-like, longer 
than the glumes. Anthers deeply divided at each end. Germen 
(see figs. 2 & 3.) egg-shaped. Styles (see figs. 2 & 3.) 2, short. 
Stigmas densely feathery Seed (fig. 4.) egg-shaped, pollished, 
loose, wrapped in the unaltered corolla. 
The loose panicle ; the single-flowered spikelets ; the calyx of 
2 rather unequal glumes, longer than the corolla ; the corolla of 
2 unequal, membranous palea, the inner sometimes wanting, the 
outer with or without an awn ; and the loose seed ; will distinguish 
this from other genera in the same class and order. 
Five species British. 
AGRO'STIS ALBA. White Bent-grass. Marsh Bent-grass. 
White Squitch. Squitch. 
Spec. Char. Branches of the panicle hispid ; branchlets spread- 
ing. Calyx-glumes spear-shaped, bristly at the keel. Stem 
spreading, creeping. Stipula (ligula) oblong, ribbed (see fig. 6). 
Engl. Bot. t. 1189. — Linn. Sp. PI. p. 93. — Willd. Sp. PI. v i. pt. l. p. 371. — Sir. 
FI. Blit. v. i. p. 81 ; Engl. FI. v. i. p. 93. — With. (7th ed.) v. ii p. 156. — I.ind. Syr. 
p. 203.— Hook. Brit. FI. p. 34. — Macr. Man. Brit. Bot. p. 262. — Lightf. FI. Scot, 
v. i. p. 93? — Sibth. FI. Oxon. p. 37. — Abbot's FI. Bcdf. p. 14. — Davies’ Welsh Bot. 
p. 8. — Schrad. FI Germ. v. i. p. 209, a & (3, t. 2. f. 1. — Purt. Midi. FI. v. i. p. 70. 
— Relh. FI. Cant. (3rded.) p. 30. — Hook. FI. Scot. p. 25. — (irev. FI. Edin. p. 17. — 
FI. Devon, pp. 12 & 121. — Johnst. Ft. Berw. v. i. p. 20 — Winch’s FI, of Northumh. 
and Durh. p. 5. — Walker’s FI. of Oxf. p. 19. — Bab. FI. Bath. p. 56. ; Prim. FI. Sarr. 
p. 107. — Murr. Northern FI. p. 49 — Dick. FI Ahred. p 23. — Luxf. Iteig. FI. p. 
7. — Cow. FI. Guide, p. 19. — Baines’ FI. Yorksh. p. 118. — Leight. Ft. of Shropsh. 
p. 57. — Beesl. Hist, of Banb. p. 591. — Mack. Catal. Pi. of Irel. p. 12 ; FI. Hibern. 
p. 298 . — Agrostis mutabilis, Knapp. Gram. Brit. t. 28 — A. polymorpha, var. 
palustris, Iluds FI. Angl. (2nded) p. 32. — A. palustris, Sind. Hort. Gram. Wob. 
p. 348. — A. capillaris. Leers’ FI. Herb. p. 20. t. 4. f. 3 1— .4. stolanifera lati- 
Fig. 1. Calyx, Corolla, See. — Fig. 2. Corolla. — Fig. 3. Germen and Styles. — 
Fig. 4. Seed. — Fig. 5. Nectary. — Fig. f). Stipula. — All magnified. 
* From agros, Gr. a field ; given by the Greeks to grasses generally, from 
their abundance in such situations. 
t See folio 56, note t. 
| See folio 488, a. 
