Chimonocalamus peregrinus Yi et L. S. Ma - a new species of Chimonocalamus Hsueh et Yi.

Chimonocalamus peregrinus Yi et L. S. Ma,a new species of the Bambusoidiae introduced from the Sichuan(Seed from Yen Tong of Lai Chau,Viet Nam),is described and illustrated.This new species is near Chimonocalamus makuanensis Hsueh et Yi[1,3~5],but not the internodes green,glabrous,youngly a little farinaceous and densely covered violet pucticulate,cylindric or canaliculate and back in base or inferomedian of ramous side,glabrous,aerial root-spine shorter,1~3mm long,culm-sheathes shorter than interrnode,without colour stripe,ligule triangle,"W" form or rare truncate,1~2mm tall,leaves (4)6~8 per ultimate branch,oral setae 2~4,3~4mm long,blade lower surface pale green; it differs from Ch.bicorniculatus S. F. Li et Z. P. Wang by its shoot intiation in the spring and autumn[2,4,5],glabrous internode,canaliculate and back in base or inferomedian of ramous side,aerial root separate,culm-sheathes shoulder even lower than middle,ligule 1~2mm long,leaves (4) 6~8 per ultimate branch,blade 8.5~13cm long,6~10mm broad,secondary veins 3(4)-paired.