i Linnean Society. [Feb. 2, 



antheris perfectissimis filamentisque nondum elongatis intra valvulas 

 adhuc latent, jam maxime extenuatis filamentis antheris autem nuUis 

 residuis extra valvulas prominentibus, conspicua. Ovarium lanceola- 

 tum, in stylum simplicem, mox bifidum, transiens. Stigmata longa, 

 linearia, brevi-villosa. Spicules neutrius vestigia produntur pedicello, 

 spiculse fertili adjecto, ciliato, mutilo. Inflorescentia : Spiea bifida aut 

 geminata ; articulis trigonis ciliato-hirsutis ad genicula longiiis barbu- 

 latis. — Gramen tenerum, gracile, ramosum. Nodi glabri. VagituB 

 arctse. Folia plana, lineari-acuta. 



A. Boyleanus, Nees. 



Trib. STIPEiE. 

 Orthoraphium, Nees. 



Spicules uniflorse. Glumes diise convexse, chartaceo-membranaceae, plu- 

 rinerves. Flosculus coUo barbato hinc depresso-plano insertus, bival- 

 vis, chartaceus. Valvula inferior plurinervis, convoluta, apice attenuata 

 in subulam continuam non articulatam neque contortam ; superior 

 brevior, binervis, dorso convexa. Lodiculee 3, membranacese ; duae 

 anteriores lanceolatas, ovarium aequantes, basi callo insertae ; posterior 

 lanceolato -linearis, ovario duplo longior. Stamina 3, antherae flavae, 

 apice barbatse aut nudae. Ovarium sessile, apice calloso-incrassatum. 

 Styli breves, basi contigui. Stigmata plumosa. Caryopsis libera. Tn- 

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

 gustis rigidis, cauda aristaeformi spicularum mediocri rigidula scabrd. 



0. Roylei, Nees. 



Trib. CHLORIDEiE. 



Melanocenchris, Nees. 

 Spiculce sesquiflorae aut subtrifloras, flosculo extremo rudimentall, in 

 rachi propria brevi alternas quidera, sed adeo approximatae ut capitu- 

 lum involucratum exhibeant ; superiores rachillae imperfectae. Glumes 

 in infimis duae, asquales, in superioribus quandoque in omnibus una 

 (supera), bracteaeformes, subulatee, rigidas, hirsutae, flosculis longiores, 

 basi membranaceo-marginatse. Flosculi perfecti duo, ubi gluma sin- 

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

 rachillffi propior, herraaphroditus, perfectus, sessilis ; alter masculus vel 

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

 pedicello seu rachillae apice indicatus. Falvulee duae, membranaceo- 

 herbaceae ; inferior trinervis, apice bifida, laciniis aequalibus lineari-subu- 

 latis, vel bifida cum seta interjecta ; superior aequ^ longa, plana, biner- 

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

 breves, subquadratse, bidentatae, glabrae. Stamina 3. Antheree luteae. 

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

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

 sis libera. Injlorescentia : Spicee partiales, forma involucrorum Cen- 

 chri aut Penniseti, in rachi communi flexuosa alternae, secundee, paucae, 

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



