COLONEL MUNRO S MONOGRAPH OF THE BAMBUSACE/E. 13 



Sectio I. TRiGLOSSiE. Confr. supra, p. 11. 



Conspectus Genei'um. 



Subsectio I. Akundinari^e. Spicuhe siii-sum imperfccte. Stylus 2-3-fidus. 

 Culmi terctes. Gluiuie fere semper paiiciucrvise. Stylus cito supra basin 

 2-3-ficlus. 

 Folia vcnulis trauvcrsis nuUis vel conspicuis. Inflorescentia ssepe simplex 



vel raro composita, ramis ultimis nunquam basi bracteis longis velatis 1. Arutidinaria. 

 Folia venulis transversis inconspicuis. Inflorescentia panicula ramosissinia 



ramis ultimis basi louge braetcatis ....... 2. Thamnocaluinus. 



Culmi semiteretes. Glumse multinerviie. Stylus longe supra basin 3-fidus. 

 Folia venulis transversis conspicuis. Paniculae ramis alternis l^asi brac- 



teatisj glumis apice foliaceis imbricatis ...... 3. Phijllostachys. 



Merostachys would be placed in this subsection by such authors as consider the two 

 lower barren flowers to be glumes. 



Subseetio II. ARTHROSTYLiniiE. Spiculie sursmn deorsumque imperfectse. Stylus fere ad basin bifidus. 

 Venulis transversis nullis. Spiculse multiflorse. 



Spieulse fere cylindrica3, pedicellatse vel scssiles, in racemo simplici vel jm- 



niculato dispositae . . . ... . . . .4. Arthrostylidium. 



Spiculae compressse, in j)anicula ramosissima laxe divaricata ... 5. Aulonemia. 

 Venulis transversis subtus prominulis. Panictda subspieata. 



Spiculse 2-3-flora3 glumis obsoletis ........ 6. Merostachys. 



Subsectio III. Chusque^. Sijiculse deorsum imperfectse, S-florse. Stylus cito bifidus. 



Culmus nodosus, foliis angustis basi articulatis ...... 7. Chmquea. 



Culmus herbaceus enodosus, foliis latis basi inarticulatis .... 8. Platonia. 



The structure of the spiculae in these two genera approaches very closely to that 

 of Paniceous grasses ; and, what is still more remarkable, the inflorescence of several 

 species both of Cliusquea and Flatonia bears such a great resemblance to certain species 

 of Fanicum that they might very readily be mistaken for them by casual observers. 



1. Arundinama. 



Micliaux, Fl. Bor.-Amer. i. 74 (1803). Miegia, Pers. Syn. PL i. 101 (1805). Ludolfia, Willd. in 

 Berl. Verb. (1808), 320. Triglossum, Fisch. in Catal. Hort. Gorenk. (1812). Macronax, Rafin. in 

 N. Y. Med. Rep. v. 350, 



Spicula sursum imperfecta, intra glumas breve pedicellata, 3-5-1 2-flora, rliacliilla articulata, flosculis 

 imbricatis distiekis distantibus (nisi 1-2 terminalibiis) tabescentibus, otnmbus bijuileaceis herma- 

 phroditis vel rarissime iiifimo masculo. Glwnce valde variabiles, acutae vel obtusa;, intcrdimi dis- 

 tantes, ut plurimum paucinerviic, inferior rare abortu deficiens, superiore semper brcvior. Palea 

 inferior acuminata vel acuto-mucronata, concava, multinervia, glabra vel liii'suta, membranacea, supe- 

 riorem bicarinatam dorse anguste canaliculatam sequans vel superans. Stamina 3, brevia. Squa- 

 m,ulce 3, conspicuse, membranaceje, ovatae vel lanceolata;, ciliatse, acutaj vel obtusse. Stylus basi 

 integer cito in stigmata 2-3 pilis simplicibus plumosa divisus. Caryopsis ovalis vel oblonga vel 

 liueari-oblonga, teretiuseula, postice sulco profundo notata. 



Gramina eosmopolitana, culmo tcreti, suflruticosa, raro arborescentia, nunquam nisi in A. distante scan- 



