GRAMINÉES. 971 
pedicellatis secundisque ; rhachi continua; spiculis sessihibus latera- 
libus, 2-seriatis; spicis fœmineis sæpius 2, vix € foliorum supe- 
riorum vagina exsertis, in Capitulum cenchroideum contracUs, 
{-lateralibus. (America bor .*) 
161. opizia Pres? — Flores diœci v. raro monœci, in spiculis 
solitarii. Masculorum glumæ 2, parvæ integræ membranaceæ inæqua- 
les; extima multo minore. Glumellæ 2, membranaceæ subhyalinæ : 
extima obtusa, 1-nervis; intima autem latior, 9-nervis, apice 2-den- 
lata, Glumellulæ 2, obtusæ. Stamina 3. Floris fœminei olumæ 
minimæ, v. altera nune subnulla, v. 0; intima ovato-oblonga, ex parte 
hyalina, 3-nervis. Glumella extima obconica involuta ; marginibus 
liberis ; limbi lobis 3 in aristam rigidam exsertamque desinentibus, 
hyalino-marginatis ; intima autem concava, 2-nervi. Styli rami longi 
plumoso-papillosi. Fructus obcordatus, basi inæqui-cunealus, com 
pressus, glumellis vesiculosis arcte inclusus. Herba repens ; folus 
brevibus planis rigidulis; spicis masculis in pedunculo terminal 1,2; 
spiculis secundis, brevissime pedicellatis; spicis fœmineis in axe0S 
Sgmentis angulatis 2-seriatim insertis, 2-floris ; flore altero herma- 
phrodito; altero ad glumellas 4, v. rarius 2, inæquales, reducto. 
(WezicumS.) 
VI. AGROSTIDEÆ. 
Les Agrostis L. — Flores in spiculis solitarii hermaphroditi ; 
élumis 2, sub articulatione persistentibus aculis carinalis exaristatis. 
Glumellæ 9 : extima glumis brevior latiuscula, mutica v. infra medium 
‘isla dorsali tenui instructa, membranacea, sæpius tenuiter hyalina; 
pe autem brevior v. brevissima, nunc minuta v. 0, tenuissime 
“re pus 3, v.rarius 1, 2. Styli distino breves, anis Line 
a extima membranacea involutus at liber. erbæ 
1 
ide B. dactyloides. — Sesleria dacty-  Sreun., Syn. pl. glum., 4, M1. — Bouteloua 
— Casiost -— Torr., Bot. Emor. Exped.,t.10.  mulica GRISEB-, her: a 
loi rs Hookeri Rupr. — Buchloe dacty- 9. Rel. Hæœnk., 1, 293, t. A, fig. IL 
Belg, en — FounN., in Bull. Soc. bot. H., Gen., II, 1178, n. 195: PT. 
South »#1;Gram. mex., 135. — Vas., Grass.  fam., 61.--H. BN, in Bull Soc. Linn N. 
ll, sg 07 HEuSL. Bot. centr.-amer., 3. Spec. 1. 0. stolonifera ie ME # rot 
PL Marty" #0stega humilis Ruvr., in Benth.  Gram. mez., 134. — Heuse., Bot. centr. : 
Weg, 47. — Anthephora sessiliflora WE, 567 
