4 GRAMINEARUM GENERA. 
PrisriLLUM : Ovarium solitarium ( duobus aliis interioribus constanter abortienti- 
bus). Ovulum 1, parieti interiori (axin spectanti) per totam longitudinem vel per 
basim affixum, rarissime infra apicem suspensum. 
Styli duo, interdum basi connati, rarius 5 : conversione umbonis ( ovarium 
terminantis ) in stigma, vel partitione alterius amborum sugmatum. 
Stigmata 1-3, indivisa, plumosa vel hispidula; pilis simplicibus vel ramosis, 
sepe dentatis. | 
FnucrUs (caryopsis Rich.) liber vel paleis adnatus. 
Pericarpium tenue, chartaceo-membranaceum (crustaceum in Zizania et Lu- 
ziola), semini adnatum (teste Brown ). 
Hilum (spilus Rich.) instar macule basilaris vel lines longitudinalis. hinc 
utrumque seminis integumentum peculiariter connectens (ex Rich.). 
Embryo lateri exteriori (ab axi averso) albuminis farinacei majoris versus ba- 
sim adherens , monocotyledoneus. Cotyledon ( vitellus Gertn.; hypoblastus Rich.) 
scutelliformis, carnosus, externe sulco longitudinali exaratus, rarissime clausus. 
Corculum (plumula conjuncta radicula ; blastus Rich.) fusiformi-cylindraceum, in 
sulco cotyledonis magis minusve profundo receptum , rarissime undique inclusum ', 
adnatum, utrinque vel nonnisi apice liberum, interdum antice, versus medium, 
appendice unguiformi (epiblasto Rich.) auctum. Extremitas terminalis ( plumula) 
conica, initio undique clausa (cotyledon Rich.), occultans foliorum 1-4 convo- 
lutorum rudimenta, tardius, sub germinatione , productain vaginulam tubulosam, 
foliis erumpentibus apice fissam ; extremitas basilaris (radicula; radiculoda Rich.) 
obtusata, perforata sub germinatione tuberculis nonnullis (3-5, rarius 1), intus 
latentibus, in radicellas totidem excrescentibus. 
Radices fibrose. Caulis (culmus auct.) cylindraceus, raro compressus, fistulosus, 
interdum farctus, nodis* clausis preditus, simplex vel ramosus, in paucis fruticosus. 
Folium 1 ad basim cujuslibet nodi, inferne vaginans; lamina membranacea, ssepius 
angusta ; vagina (stipula axillaris, cum petiolo connata, nonnisi apice [ligula] libera) 
caulem totum cingens, antrorsum plerumque fissa. Spicule in apice caulis vel ra- 
morum paniculate , racemose vel spicatze; interdum rhachi incrassate immersee; 
rarissime plures fasciculato-congeste vel inter se connate , spatha propria cincta. 
' In Oryza sativa paucisque affinibus ( Rich. ). 
* In solo Enodio ( Molinia ) nodi contracti. 
