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 226 CHLORIS MELVTLLIANA.

��PLEUROPOGON.

��Char. Gen. Locust/B multiflorse, cylindracese. Gluma al)breviata, ingequivalvis, mutica. Perianfhii valvula in- ferior mutica, obtusa, concava, nervosa, apice scarioso : superior nervo utroque lateraliter biseto ! Lodicid(B distinctse. StijJi 2. Stigmata plumosa. Caryopsis libera, lateribus compressis.

Grameii elegans. Polia ^;/<5r;?^, cau/usta, vagina integra, ipso ajnce tantumjisso. Raceraus sinijjlex, locustis cernuis, purpureis, nitentibus. Glinna valvula inferiore acuta, svperiore latiore obtusa. Perianthia distincta, valvula in- feriore ^-1-nervi, superiore Janceolata emarginata, pari svperiore setarum brevissimo.

Obs. Genus Glyceri8e proximum, quacum locustis tereti- bus, perianthiis obtnsissimis et vaginis folioruni integris convenit ; difFert prsesertim setis lateralibus nervorum val- vulae superioris perianthii, lodiciUis distinctis, stigmatibns hand decompositis, caryopside lateraliter compressa et in- florescentia.

Character fere essentialis in nervis valvulae superioris periantbii latere setigeris ; analoga structura enim vix, quantum scio, in ullo alio gramine obtinet nisi in Uniola latifolia Mich, am.^ ubi equideui nullis aliis difFerentiis comi- tata pro charactere specifico tantum habenda.

62. PLEUROPOGON SABINII.

Desc. Grarnen 3-iinciale usque spithameum, glabrum. Cuhni erecti, foliati, striati, laeves, simplices. Folia radicalia angustiora, longiora; culmea linearia, plana, brevia, Isevia : vagina paulo compressae, striatae, glabrae, Iseves, fere ad apicem integrse, ipso apice fisso, marginibus scariosis, su- prema folio proprio longior : ligula brevissima, rotundata, emarginata. Sjjica racemosa, simplicissima, rachi striato- angulata, Isevi, viridi, pedunculis lateralibus glumam vix

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