116 
61. Zerna. 10. GRA.MINEJE. 
PI. end. ph. 
9-ribbed,heartshape lobed at the tip; Iristle straight, placed 
below the tip; upper short; lodicule ovate, not notched, 
smooth ; ovary blunt ; stigmata feathered ; cariopsis husked, 
furrowed .— Panicle very much branched; branches semi- 
verticillate, all one way; locustce linear, lanceolate; pedum 
cles rather wedgeshape. 
Zerna erect a. Upright drank. 
Panicle erect ; peduncles simple, semiverticillate ; locust ce 
upright, flattened; jlowrets wedgeshape; Iristle straight, 
shorter than the glume ; radical leaves very slender, ciliate, 
pilose. 
Bromus erecfus, Huds. Fl.Angl.ed. 1,39. 
Bromus agrestis, Allioni Pedcm. 2, 249. 
Bromus perenuis, Vill. Delph. 2, 122. 
Bromus pseudo-arvensis, Koel. Gram. 241. 
Bromus angustifolia, Schrank Bavar. 236. 
Bromus arvensis, Pollich Palat. 113. 
Bromus montanus, Flor. Wetter. 147. 
Dry fields ; perennial ; May to September. 
Roots in tufts; culm 3 feet high, erect, round; radical 
leaves very long ; stem leaves broad, flat ; sheaths long ; li - 
gula short; panicle contracted; peduncles upright, very 
unequal ; locustce 5 or 6-flowered. 
2. Zerna gigantea . Giant drank. 
Panicle drooping, loose; peduncles long, in pairs, facing- 
one way; locustce flattened, bald ; Jlowrets imbricate ; bristles 
flexuose, longer than the glume ; leaves broad, bald. 
Festuca avenacea q. Gramen avenaceum glabrum, panicula e spicis rari« 
strigosis composita, aristis tenuissimis, Rail Syn. 415, 11. 
Bromus giganteus, Lin. S.P. 114. 
Festuca gigantea, Vill. Daupli. 2, 110, 
Bromus aquaticus, Gmel. Syst. Veg. 1, 189. 
Avena gigantea, Salisb. Prod. 22. 
Schedonorus giganteus, Gaud. FI. Helv.MSS. 
Damp woods and hedges; perennial; July, August. 
Root fibrous; culm 4 feet high, firm, smooth; leaves 
nging, swordshape, firm; sheaths bald; ligula short; 
panicle a foot long ; peduncles in pairs ; locustce small, whitd 
and green, 4 to 7-flowered. 
#. triflorus. Plant smaller ; panicle drooping and spread* 
ing; locustce 3 or 4-flowered. 
Bromus triflorus, Lin. S. P. 115. 
Festuca tri flora, Eng. Bot. 1919. 
Dry barren places. 
