GEAMIXE.E. 1 37 



crectus rectus 6 m. altus, 2 cm. in diametro ; vagina dcmlua purpurca apico 

 attonuata prinimn ad suinmum truncata sparse hirsuta demum glabra nitida mar- 

 gine ciliata apicc utroque latcre auriculis minutis ct sotis auricularibus instructa, 

 pseudophyllis lineari-triangularibus 5 mm. loiigis 4 mm. latis apice acuminatis, 

 ligtila brevissima villosa ; merithallium nitidum medium 25 cm. longum 9 mm. 

 lattim ; lignum 14- mm. crassuni ; canalis ojmm. in diametro; pulvillus 

 inferior prominente amiuliformis, pulvillus superior tenuiter clevatus, pulvilli 

 a se 7 mm. distantes ; squama bicarinata bifida subglabra. Rami ternatim siti 

 simplices vel pauciramulosi, ramulis 3 5-10-foliatis ; vaginella valde inibricata 

 510 cm. longa complanata ore truncata, set-is auricularibus utroque latere circ. 

 10 ercctis rectis vel crispatis ; ligula brevissima Jiirsuta. Folia lineari-lanceo- 

 lata 15-24 cm. longa 2-3^ cm. lata apice subito acuminatissima basi abrupte 

 ad petiolum 5-7 mm. longum abeuntia margine .sursum latere uno hirsuta 

 latere uno scabra, ncrviis secuiidariis utroqnc latcre costa? 7-11, venulis 

 inter ncrvos secundarios 7. 



HAB. Xanto : Binkiho et Rosniko, Aprili. 1916, leg. B. HAY ATA ; 

 Ivagi : Shokosho, culmus 10 m. altus 2^- cm. in diametro. 



Near Arundinaria japonica, but differs from it in having ternate 

 branches, and in having shining vaginas of the turions. The vaginas of A. 

 japonica is quite lusterless. 



Arundinaria niitakay amen sis HAYATA in Tokyo Bot, Mag. XXI. 

 p. 49 et Fl. Mont. Formos. p. 240. 



Sasa niitakay amensis CAMUS Bambus. (1913) p. 24. 



In our species, the stamens are usually in three, and the branches are 

 always ternate, characters quite assignable to Arundinaria, but not to Sasa. 

 As Monsieur CAMUS gave no comment, I can not understand on what ground 

 did he transfer this species to Sasa. 



Arundinaria oiwakensis HAYATA sp. nov. (Fig. 48). Frutescens. 

 Rhizoma liorizontaliter sympodialiterque repens, partibus novellis squamis inibri- 

 catis obtectis, 5 mm. crassum, radicibus teretibus incrassatis 4 mm. in diametro. 

 Turio erectus rectus purpurascens hirsutus multistriatus, striis viridescentibus, 

 pilis albis vel fulvescentibus caducissimis obtectus; vaginte medise turionis sub- 

 coriacea3 caduca) dorso litrsutne iustus glabrre nitidce basi ad insertioneui dense 



