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 MONOCOTYT.KDONKS. 229

63. DuroNTiA FisnKRT.

Desc. Gramen G-10-uiicialc, crectuiu. Cidmi siiuplices, foliati, Ltvcs, glaberriini. Folia radicalia ei infcrioraculmi canaliculata, angusto-liiuarla, acutii, ItCvia, ;2-:3-iincialia, varjinis strictis, scariosis, vix ad medium fissis ; culntra 1-2 siipcriora hrcviora, plana, laevia, vaginis pmpriis laxiiisculis foliaccis ultra medimu fissis loiigiora : lif/ula mediocris, ohtusa, subtruncata, imberbis. Fanictda coarctata, spici- formis, basi quandoque iiiternipta, piirpureo-fusca, niteiis, sesquiuiK'ialis — binncialis, ramis subgcminatis, paucifloris, pedicellisque lacvibiis cum locusta continuis. Locustm ovata3, biHorae, cum rudiineiito clavato setiiliformi tertii flosculi, nunc trifloi'cio flore tcrtio conipleto, nunc biflorce absque tertii rudimento. Ghima bivalvis, subaequalisj nui- tica, glaberrima, purpurascens, subnitcns, margine pallido scarioso, loimitudiue lociistae. Valoulce concavae nee cari- natse, oblongo-lanceolata3, inferior paulo augustior, acuminata V. acutissima, uninervis ; superior semi-trinervis,medio paulo infra apicem lateralibus longe intra marginem evanescenti- biis. Perianthia subconforniia ; inferius intra glnmam subsessile, a pedicello brevissimo separabilc ; s/fperius cum apice paulo dilatato pedicelli brevis articulatum, facile soiubile; utrinsque valmda inferior oxnia, mutica obtusa, vix unquani acuta, integra, concava, ipsa basi pilis brcvibus sti'ictis albis barbata, et a basi fere ad medium pilis bre- vioribus strictis subadpressis subsericea, trinervis, nervis lateralibus intra marginem evanescentibus, medio paulo infra apicem desinente : superior longitudine inferioris, manifeste angustior, lineari-oblonga, glaberrima, dinervis, nervis brcvibus, intersticio lineari concaviusculo. LodiciiJce duse, distincta3, collatcrales, mcmbranacete, hyalinge, subovatae, V. cuneatae, apice eroso-dentato, ovario longiores. Stamina 3, tilamentis distinctis, capillaribus, antlieris fusco-purpureis, linearibus utrinque bifidis. Ovariinn ovale, glabrum. 8ti(jmata 2, subsessilia, hyalina, dense plumosa, ramis apicem versus brevioribus.

Ohs. The specific name is that of i\Ir. Fisher, whose herbarium contained the most complete series of specimens of this grass.

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