Gramikeae. OnvzA. 519 



pallicli^le : superiores convohitae. Ligula exserta , inemrjra- 

 nacea , oblonga , acuta , in vaginae margines decurrens , gri- 

 sea. Folia linearia , acuminata , stricta , 3 lineas lata, radi- 

 calia cum vaginis i\ — 3 pedes longa , culmea superiora 

 bteviora, omnia planiuscnla , septeninervia , costa sub- 

 tus prominente crassa obtuse carinaia , laeviuscula , margine 

 scabra, subglaucescentia. Panicula racemosa pedalis , basi 

 vagina suprcma involuta, rbachi ramisque 3 — 4-pollicari- 

 bus alternis vel suboppositis apprcse.isquc rigidis undatis acute 

 triquetris scabris. Pedunculi in ramis alterni , adpressi , ri- 

 t>idi , compresso - triquetri ; scabri , apice post spiculae lap- 

 sum margine submembranaceo angulato subquadridentato 

 erecto papillam mediam circumdanle cincto. Spicula nodo 

 solubili inserta. Glumae perbrovcs : inferior major , lineam 

 tamcn vix superans, e basi dilatata utrinque uni - vel biden- 

 lala subito in sabulam carinatam iminervem margine scrru- 

 lalo-scabram acuminata ; superior paulo minor, e basi dila- 

 tala alteroque latere truncata oblique acurainata et binc inter- 

 dum inferne denle aucta. Yalvula infcrior ipsa quidem 3 — 4 

 lineas longa, obovato -Irigona , anlice fornicata , carinata, 

 pallida , quinquenervis , ad nervos scabra , tum vero in subu^ 

 lam crassam reciam fiotulosam triquetram trinervem ad ner- 

 vos scabram berbaceo- virentem , pollicarem fere , extcnua- 

 tur; valviila superior 3-linearis, coriacea, lanceolalo-lri- 

 quetra , fornicata , Irinervis, ad nervos scabra , in cau- 

 dam angustam planam apice bidcntatam li lineam lon- 

 gara viridem scabram contracta. Lodicula una , anterior, 

 membranacea, obcovdala , complicata , lobis obtusis. Fila- 

 menla (6.) filiforraia. Germen oblongum, apice truncatum; 

 styli breves et stigmata sparsa alba. 



Hahiiat in coiifinibus regni Paraguay^ani et in Rio 

 grande do Sul ^ locis paludosis. {Sellouj. — Fidi in Ilerb. 

 Reg. Rerol.) (£) ? 



Adnot. Ob singularem spiculae forraam vix Oryzae 

 sativae varietatibus accensenda est. 



01)serv. Nostra quum altera jam sit, quam cognovi- 

 inus, specics Amerlcae indigena, neque dc vera Oryzao 

 salivae patria quidqi-ara constet , ad cl. Brownii regu- 

 lara Araericam et eandem genuisse foret accipiendum. 



