MONOCOTVLKDONES. 2'2^
Obs. In excmplaribus plcrisque nulluvn certe nicliinentuiii flosculi seciiiidi, quod tameii in nonnullis a Melville Island atque in excniplari a Possession l^ay adest, setulifornie, hispiduhun ; et in specimine unico ^ Alelville Island locustas nonnullas bifloras floscido secundo ])edicellato perfecto observavi.
57. PoA ANGUSTATA, panicula siniplici coarctata lineari- lanceolata, locnstis 4-5-flons, glunia inferiore dimidio niinore, periantliiis apice crosis : valvnla inferiore basi elanata latcri- bus glabriusculis, foliis angusto-linearibus.
Dksc. Gravien 4-6-nnciale, glabrum, erectum ; radice fibrosa. Cidmi foliati, basi quandoque divisi, lacves. Folia angnsto-linearia, plana, acuta, glabra, laevia ; vagince subcy- lindracese, laeves, suprema folio proprio longior, omnes ipsa basi integra ; Ucjula subquadrata tani lata quam longa, apice dentato dente medio paulo longiore. Fanicida erecta, angustata, circumscriptione lineari-lanceolata, ramis pauci- floris, pedicellis denticulatis, strictis, viridibus, apice paulo dilatato, cum locusta baud omnino continuo. Locunfm oblongse, coloratse, ssepius quadriflorae. GJumce hyalina?, glaberrimse, uninervia:', cum pedicellis persistentes, valvula inferiore fere dimidio minore ; superiore duplo latiore et fere duplo longiore, ol)tnsiore, perianthio dimidio circiter breviore, nervis lateralibus obsoletis. ^(^^r/r/;^////^ separatini decidentia, raclii locustae glabra ; valvula iiif crier oblonga, concava, acutiuscula, apice scarioso eroso-denticulato, quin- quenervis, lateribus infra medium pube rara in nervis extimis crebriore instructis, ipsa basi absque lana implexa ; siqjerior paulo brevior, dinervis, nervis viridibus, denticulatis, lateri- bus complicatis. Lodiculce 2,hyalinae, imberbes, semibifidse. Stamina 3.
58. PoA ABBREViATA, pauicula simplicissima coarctata subovata, locustis 4-5-floris, glumae valvulis subaequalibus acutissimis perianthia basi lanata lateribus pubescentia aequantibus, foliis involuto-setaceis.
Desc. Gramen 3-4-unciale. Cidmi foliati, basi saepe divisi, laeves. Folia involuta, subsetacea, retrorsiim scabra, vaxjivfB fere ad basin usque fissne, cylindracenp. Pavicidn
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