Linnaan Society. 221 



Trib. STIPEiE. 

 Orthorapiiium, Nees. 



Splcula: iiniflorrp. Glunnv duoe convcxie, chartaceo-membranaccn?, plu- 

 riiierves. Flo.sculiis collo barbato hinc dcpresso-plano iiisertus, bival- 

 vis, chartaceiis. Valcula inferior plurinervis, convoliita, apico atteiiuaia 

 in subulam continnani non articiilatam neque contortam ; superior 

 brevior, bincrvis, dorso convexa. Lodiculce 3, membranacca; ; dujB 

 anteriores lanceolata^, ovarium lequautes, basi callo insertas ; posterior 

 lanceolato -linearis, ovario duplo longior. Stamina 3, anthera; flava;, 

 apice barbata; aut nuda?. Ovarium sessile, apice calloso-incrassatum. 

 Stijli breves, basi contigui. Stigmata pluniosa. Caryopsis libera. Tn- 

 Jlorescentia : Panicula angusta, ramis paucifioris. — Gramina foliis an- 

 gustis rigidis, cauda aristaeformi spicularum inediocri rigidula scabra. 



0. Roylei, Nees. 



Trib. CHLORIDES. 

 Mllanocenchris, Nees. 



Spiculce sesquiflorae ant subtrifloriB, flosculo extremo rudimentali, in 

 rachi propria brevi alternee quidem, sed adeo approximatce ut capitu- 

 lum involucratum exhibeant ; superiores rachilliE iniperfectas. Gliimce 

 in infimis dvias, sequales, in superioribus quandoque in omnibus una 

 (supera), bracteajformes, subulatae, rigidae, hirsutse, flosculis longiores, 

 basi membranaceo-marginatce. Flosculi perfect! duo, ubi gluma sin- 

 gula residet quasi axillares in angulo glumse et rachillte ; quorum alter 

 racbilliE propior, hermaphroditns, perfectus, sessilis ; alter masculus vel 

 neuter pedicellatus ; tertius, ubi adest, rudimentalis, clavatus, nudo 

 pedicello sen rachillie apice indicatus. Valvulce duae, membranaceo- 

 herbacete ; inferior trinervis, apice bifida, laciniis sequalibus lineari-subu- 

 latis, vel bifida cum seta inteijecta; superior sequh longa, plana, biner- 

 vis, apice bifida. Flosculus superior conformis, sed minor. Lodiculce 

 breves, subquadratse, bidentatte, glabra;. Stamina 3. Antherce lutes. 

 Ovarium oblongum, compressum, laeve, truncatulum. Styli longi, late 

 discrcti, filiformes. Stigmata angusta, dissite brevi-puberula. Caryop- 

 sis libera. Itijlorescetitia : Spicce partiales, forma involucrorum Cen- 

 chri aut Penniseti, in rachi communi flexuosa alterns, secundiB, paucas, 

 nutantes racemulum exhibent. — Gramina perennia, parva, polyphylla, 

 ramosa. Folia brevia, rigidula. Ligula nulla. Racemus exsertus, 

 gracilis, secundus, laxus. Setce flosculorum coloratae. 



1. M. Royleana, Nees. 



2. M. Rothiana, Nees. 

 Pomereulla monoica, Roth. 



Trib. FESTUCE^. 



PLAGIOLYTRUM, Nees. 



Spiciila multiflora. Glumcd duae, spicula breviores ; inferior minor am- 

 plectens, oblique acutata, altero latere subprsemorsa ; superior biden- 

 tata, et inter dentes brevi- subulata, subula dentes aequante, e nervi 

 dorsalis geminati apice unito orta. Flosculi in axi gracili ad genicula 

 barbulata imbricati, bivalves. Valvula inferior ovata, lateribus incur- 

 va, herbacea, trinervis, apice bilaciniata laciniis muticis, setis tribus 

 strictis, e nervo medio duobusque lateralibus proficiscentibus interjectis ; 

 superior oblonga, magis membranacea, sursum plana, in apice obtusi- 

 usculo bifida, inferius convoluta, referens flosculum ligulatum Synan- 



