內文竹，內份竹，恒春箭竹，春青籬竹，內門竹
Drepanostachyum naibunense (Hayata) Keng f.
Arundinaria naibunensisHayata
Pseudosasa naibunensis(Hayata) Makino & Nemoto
Pleioblastus naibunensis(Hayata) Kanehira & Sasaki
Arthrostylidium naibunensis(Hayata) W. C. Lin
Chimnobambusa naibunensis(Hayata) McClure & W. C. Lin
Ampelocalamcus naibunensis(Hayata) Wen
Bambusa naibunensis(Hayata) Nakai
Leleba naibunensis(Hayata) Nakai
稈高3-6 m，徑0.5-1.0㎝，細長，梢部下垂，蔓性狀，節間長12-28㎝，光滑無毛；小枝纖細，叢生稈節。籜質薄，狹長，頂部及底部均為截形，表面疏生淡棕色細毛；籜耳細小，上端疏生短鬚毛；籜舌不顯著；籜葉線狀披針形，極易脫落。葉一簇2-10枚，以5-7枚為多，狹狀披針形或線狀披針形，先端尖銳，基部楔形，長6-14㎝，幅0.5㎝-1.2㎝，側脈2-3對，細脈5-8，平行脈；葉柄長0.3-0.6㎝；葉耳不顯著；葉舌凸出，膜質，長0.15-0.25㎝，上端生有長毛；葉鞘長3-6㎝，平滑無毛。筍期8-9月。