F'estucea.] CC. GRAMINEJE. 1197 
Genus vix a Poa distinguendum, | C. latifoliwm, Br., est. Arctagrostis, Griseb., ad 4grostideas 
relatum, 
958. Graphephorum, Desv. in Nouv. Bull. Soc. Philom. ii. (1810) 189, et in Journ. 
ot. i. (1813), 71.—Spiculwe oo- (2-5-) flore, anguste y. ample paniculatz, rhachilla sub 
floribus articulata pilosa, ultra flores in stipitem nudum v. minute glumiferum producta ; 
floribus hermaphroditis. Glumee n v. subscari muticze, 2 inferiores 
vacus, plus minus distincte carinatz,, parum i les, fl üil quil v. vix bre- 
viores, basi saltem 3-5-nerves v. extima prwter carinam subenervis; florentes dorso 
tundatw, apice denticulatze v. lacere, D-7-nerves, nervis presertim lateralibus apicem 
non attingentibus ; palea glumam zequans v. interdum superans, angusta, juxta margines 
9-carinata, carinis ciliolatis. Stamina 3. Styli distincti, stigmatibus plumosis. Caryopsis 
oblonga, a dorso compressiuscula, antice concava, appendi la brevi subspongiosa swpe 
coronata, esterum glabra, gluma paleaque inclusa, libera.—Gramina erecta, sspe elata, 
rarius humilia, foliis planis. Panicula junior sspe angusta, erecta, stricta, demum effusa, 
ramulis brevibus v. elongatis patentibus v. pendulis, interdum secundis. 
Species ad 8, boreales, Americanz Europmese v. Asiatiee, 4. Gray in Ann. Bot. Soc. Canada, 1861, 
65. Fourn. Gram. Mez. 111. 
Genus a Glyceria imprimis rhachilla evidentius pilosa differt, quare interdum 4rundineis asso- 
ciatur, in sectiones sequentes ab A. Grayio dividitur :— 
1l. Scolochloa. Gramina elata, panicula ampla laxa. Glumze rigidule. Ovarii callus termi- 
nalis villosus, stigmatibus subsessilibus. Species 2. Hook. Fl. Bor. Amer. t, 231 (Festuea). Scoro- 
cnroa, Link, Hort. Berol. i. 136. Nees, Gen. Fl. Germ. Monocot. i.n. 62. Reichb. Ic. Fl. Germ. t. $1. 
F.. Schmidt, Reise Amurl. Bot. t. 8. FrvwiNIA, Fries, Summ. Veg. Scand. 247. 
2. Eugraphephorum. Gramen elatum, panieula demum ampla laxa. Spieularmum  rhachilla 
undique eiliata. Glum:e tenues, subseariosw, Ovarii eallus terminalis gluber, stigmatibus sub- 
sessilibus. .Beauv. Agrostogr. 76, t. 19, f. 8. 
3. Dupontia. Gramina humilia, panicula angusta rarius demum effusa. Spieularum rhaehilla 
preter pilos sub floribus glabra. Glumsw membranaeem, siepe eoloratz, Ovarium glabrum. 
Dv»oxrtA, Z7. Br. App. Parr. Voy. 190. , 
4. Arctophila. Gramina. elatiuscula, debilia, panieula laxa, spieulis parvis, Rhachillee pili sub 
floribus breves. Glumze latz, venis preter centralem fere obsoletis. Ovarium glabrum, stylis 
brevibus. Caryopsis subteres, fere acuminata, exsulea. Species 3, Glycerie valde affines. 
959. Giyceria, R. Br. Prod. 179.—Spicule co-florie, in panicula angusta v. effusa pedi- 
cellatze, rhachilla inter flores articulata glabra v. rarissime pilosula, floribus hermaphroditis 
v. summo imperfecto. Glum:e 2 inferiores vacus, obtuse v. acutze, muticze, florentibus 
breviores, parum inszquales, nunc enerves v. 1-nerves, nunc 3-b-nerves ; florentes obtusre, 
mutieze, apice plus minus hyalinze, rotundatee v. denticulate, dorso convex:e nec carinatze, 
D-9-nerves, nervis omnibus ante apicem tibus interd brevissimis et ad 3 
reductis; palea gluma vix brevior, 2-carinata. Stamina 3. Styli brevissimi, distincti, 
stigmatibus varie plumosis. Caryopsis glabra, ovoidea v. oblonga, teres v. a dorso com- 
pressiuseula, antice anguste v. late sulcata v. exsulea, gluma paleaque inclusa, libera v. 
siccitate paleze leviter adhserens.—Gramina perennia v. rarius annua, sepe elata, haud 
raro aquatica, foliis ssepius planis angustis rarius rigidis conyolutisque. Panicula nunc 
longa, angusta, ramulis brevibus erectis paucispiculatis, nune effusa floribunda. Spicule 
nunc longe, angustze, multifloree, nunc parvuli. 
Species ad 30, per regiones temperatas utriusque orbis tam australes quam boreales late dispersz, 
inter tropieos pauez. — Kun. Enum. PI. i. 366. Benth. Fl. Austral, vii. 656. 
Genus habitu. polymorphum, a oa differt. glumis florentibus minime carinatis, a Festuca glumis 
obtusioribus latioribus, caryopsi latiore sepissime libera, ab utroque genere glumarum nervis abbre- 
viatis ; in sectiones 2 dividitur, ab auctoribus nonnullis pro generibus propriis habitas :— 
1. Hydrochloa. Lodieule subearnose truneatwe swpius eonnatz sepe tamen facile separabiles 
v. demum sponte solute nune brevissime v. obsolete. Caryopsis crassa, vix compressa, obtusissima, 
suleo angustissimo v. obsoleto. Huc pertinent. G. fluitans, Br., species typica fere cosmopolitana, 
ponieula longa angusta, spieulis angustis multifloris; G. aquatica, Sm., species Europcea et Asiatica, 
