Bambusa diaoluoshanensis

Description

Culms ca.10 m,4–5 cm in diam.,basally slightly flexuose,apically pendulous;internodes 25–30 cm,initially stiffly brown strigose;wall thick;lower nodes with rings of stiff,pale brown hairs and white powder below sheath scar,basal ca.3 nodes also with a ring of gray-white silky hairs and sometimes aerial roots above sheath scar;branching from base.Branches solitary at basal ca.3 nodes,3 on mid-culm,many on upper culms with primary dominant;branchlets of lower branches sometimes shortened into weak thorns.Culm sheaths deciduous,stiffly dark brown hairy,apex asymmetrical,broadly arched;auricles extremely unequal;larger auricle to 4 × size of smaller one,narrowly oblong,ca.5 mm;smaller auricle subelliptic,usually covered or pressed against base of blade;oral setae undulate;ligule ca.3 mm,finely dentate,shortly fimbriate;blade erect,narrowly triangular,base rounded,to 8/9 width of sheath apex.Leaf blade linear-lanceolate to lanceolate,usually 7.5–16 × 1.3–1.8 cm,abaxially densely pubescent,adaxially glabrous.Inflorescence unknown.