GnamINEAE. Onxvza. 519 
pallidae: superiores convolutae. Ligula exserta, membra- 
nacea, oblonga, acuta, in vàginae margines decurrens, gri- 
sea. Folia linearia, acuminata, stricta, 3 lineas lata, radi- 
calia cum vaginis 25—3 pedes longa, culmea superiora 
breviora, omnia planiuscula, septemnervia, costa sub- 
tus prominente crassa obtuse carinata, laeviuscula, margine 
scabra, subglaucescentia.  Panicula racemosa pedalis, basi 
vagina suprema involuta, rhachi ramisque 3 — 4 - pollicari- 
bus alternis vel suboppositis appressisque rigidis undatis acute 
triquetris scabris. Pedunculi in ramis alterni, adpressi, ri- 
gidi, compresso . triquetri ; scabri, apice post spiculae lap- 
sum margine submembranaceo angulato subquadridentato 
erecto papillam mediam circumdante cincto. Spicula nodo 
solubili inserta.  Glumae perbreves: inferior major, lineam 
tamen vix superans, e basi dilatata utrinque uni- vel biden- 
tata subito in subulam carinatam uninervem margine serru- 
lato -scabram acuminata; superior paulo minor, e basi dila- 
tata alteroque latere truncata oblique acuminata et hinc inter- 
dum inferne dente aucta. Valvula inferior ipsa quidem 3—4 
lineas longa, obovato-trigona, antice fornicata, carinata, 
pallida, quinquenervis, ad nervos scabra, tum vero in subu- 
lam crassam rectam fistulosam triquetram trinervem ad ner- 
vos scabram herbaceo-virentem, pollicarem fere,  extenmua- 
tur; valvula superior 3-linearis, coriacea, lanceolato -tri- 
quetra, fornicata,  trinervis, ad nervos scabra, in cau- 
dam angustam planam apice bidentatam ^11 lineam ]lon- 
gam viridem scabram contracta.  Lodicula una, anterior, 
membranacea, obcordata, complicata, lobis obtusis. Fila- 
menta (6.) filiformia. Germen oblongum, apice trüncatum ; 
styli breves et stigmata sparsa alba. 
Habitat in confinibus regni Paraguayani et in. Rio 
grande do Sul, locis paludosis. (Sellow. — Vidi in Herb. 
Reg. Berol) (9? 
Adnot, Ob singularem spiculae formam vix Oryzae 
sativae varietatibus accensenda est. 
Observ. Nostra quum altera jam sit, quam cognovi- 
mus, species Ámericae indigena, neque de vera Oryzae 
sativae patria quidquam constet , ad cl. Brownii regu- 
lam Americam et eandem genuisse foret accipiendum. 
