simam altitudinem valvula; subsequantem desinente, lateralibus utrinque duobus obsoleUs, infra 

 apicem prorsus evanescentibus ; superior obtusior, inlegerrima, dorso angusto planiuseulo vol 

 leviter convexo, lineari, dinervi, nervis parallelis, tenuibus, nudis, lateribus dorso aliquoties 

 latioribus, parallelis, marginibus nudis. Lodicula dus, subcollaterales, niembranaceK, se- 

 mibiflda?, dentibus acutis, imberbes, longitudine ovarii. Stamina 3, filamcntis capilla- 

 ribus, antheris fusco-straiuineis, utrinque bifidis. Ovarium ovaturn, acutum, glabrvnu, .\- 

 sulcum. Styli brevissimi, approximati, vix manifesti. Stigmata byalina, dense plumosa, 

 apicibus acuus. 



Obs. In exemplaribus plerisque nullum certe rudimcntum flosculi swundi, quod tamen in 

 nonnullis a Melville Island atque in exemplari a Possession Bay adest, setuliforme, bispidulum ; 

 et in specimine unico a Melville Island locustos nonnullas bifloras flosculo secundo pedicellate) 

 perfecto observavi. 



57. Poa angustata, panicula simpliei coarctata lineari-lamvoluta, loai-ns •J-5-floris, 

 glunia inferiore dimidio niinure, periantlnis apice erosis : valvula infcriore bnsi eJanata lateri- 

 bus glabriusculis. fulii- anuu-iii-linearibus. 



Desc. Gramen 4-6-unciale, glabrum, erectum ; radicc fibrosa. Culmi foliati, basi quau- 

 doque divisi, neves. Folia angusto-linearia, plana, acuta, glabra, larvia; vagina subcylm- 

 dracete, leves, suprenia folio proprio longior, omnes ipsa basi integra; //>///« s.iliquadratatam 

 lata quani longa, apice dentato dente medio paulo longiore. Panicula erecta, angustata, cir- 

 cumscriptione bneari-lanceolata, ruiuis pnweilloris, pcd'uvllis dentin.lutis, strk-tis, viridibus, 

 apice paulo dilatato, cum locusta baud o.nnino continue. Locust* oblongs coloraUe, r.xp.us 

 quadrinorae. Gluma byalinvE, glaberrimte, uninervise, cum pedicellis persecutes, valvula 

 intl-rinre fere dimidio minore ; superiore duplo latiore et fere duplo longiore, obtusiore, peri- 

 anthio dimidio circiter breviore, nervis lateralibus obsoletis. Periantlua separatim decidentin, 

 racbi locustje glabra ; valvula inferior oblonga, concava, acutiuscula, apice scarioso eroso- 

 denticulato, quinquinervis, lateribus infra medium pube rara in nervis cMmns erebnore m- 

 structis, ipsa basi absque lana implexa; superior paulo brevior, dinervis, ncn is viridibus, den- 

 ticulatis, lateribus complicatis. Lodicid* % hyaline, imberbes, se.nibiliche. Stamina 3. 



58. Poa aubi^i.ta, pamcuh .mpla^ni I coaretata .ubovata, bcurti, i-U\^, 

 gluma; valvulis sub*qualibus acutissimis periantbia basi lanata lateribus pubescentia aequanti- 

 bus, foliis involuto-setaceis. , 



Desc. Gramen 3-4-unciale. Culmi foliati, basi sspe divisi, laves. Folia involute, 

 subsetacea, retrorsum scabra, vagina fere ad basin usque fiss*, cylindracea.-. Panicula v,x 

 semuncialis, rainis alternis, subbifloris, strictis, lavibus, vix tlenticulatis. LocusU oblong..-, 

 colorat*. Glumce acutissims, valvulis longitudine subaqualibus, carinatis, glaberrmus, u,jv- 

 riore manifesteangustiore, paululum breviore, uninervi ; superiore basi trinervi. Perianthia 

 glumas paulo superantia; valvula inferior ipsa basi lana implexa parca instruct*, carina a basi 

 ad duas tertias partes longitudinis sericea, linea pariter serkea utrique margin! approximate, 



