;Hsuehochloa;Ampelocalamus;Drepanostachyum;Himalayacalamus "Clump form";"Unicaespitose, drooping, procumbent or scrambling";"Unicaespitose, pendulous or scrambling";"Unicaespitose, pendulous";"Unicaespitose, nodding to pendulous" "Culm height (length)";"4–6 m";"3–10 m (usually 3–5 m)";"1.5–5.4 m (usually 2–3 m)";"2–9 m" "Culm diameter";"4–5 mm";"5–15 (40) mm";"7–25 mm";"10–35 mm" Internode;"Terete, densely white pubescent and white powdery, later subglabrous";"Terete, finely ridged, usually glabrous";"Terete, glabrous";"Terete, glabrous" "Branch complement";"Solitary at the base, 3–7 at the middle and upper, subequal";"Many (less than 20), geniculate, central often dominant";"Numerous (15 to 80), verticillate, subequal, slender";"Many (15 to 30), subequal, slender" "Nodal sheath scar";inconspicuous;"prominent, often with corky collar";prominent;prominent "Culm sheath";"1/2 as long as the internode, persistent, densely white pubescent abaxially, glabrescent";"Shorter than the internode, deciduous, often sparsely setose abaxially";"Longer or shorter than the internode, deciduous or persistent, glabrous or sparsely setose abaxially, adaxially scabrous apically";"Longer or shorter than the internode, deciduous, glabrous or seldom setose abaxially" "Culm sheath auricle";"Falcate, amplexicaul";"Absent or minute (A. actinotrichus with prominent auricles)";Absent;Absent "Culm sheath oral setae";"Several, radiate";"Absent except A. actinotrichus";Absent;Absent "Culm sheath blade";"Ovate-lanceolate, reflexed";"Linear, linear-lanceolate, lanceolate, ovate-lanceolate, erect or reflexed";"Subulate or linear, erect or reflexed";"Subulate or linear, erect or reflexed, readily deciduous" "Leaf number of the ultimate branch";2–5;3–11;3–5;3–7 "Leaf sheath";Glabrous;"Glabrous or pubescent";Glabrous;Glabrous "Leaf auricle";Falcate;"Absent or present";"Absent or minute";"Absent or minute" "Leaf oral setae";"Several, radiate";"Radiate when present";"Absent or present";"Absent or present" "Leaf blade";"Leathery, glabrous";"Papery, glabrous or pubescent";"Papery, glabrous";"Papery, glabrous or abaxial midrib hairy proximally" Inflorescence;Racemes;Panicles;Panicles;Racemes "No. of florets per spikelet";5;2–7;2–6;"1 or 2" Stamen;"3, anthers purple";"3, anthers yellow";"3, anthers yellow";"3, anthers yellow" Stigma;"2, plumose";"2, plumose";"2, plumose";"2, plumose" Habitat;"Limestone montane areas, alt. 500–950 m";"Broad-leaved forests, stony slopes (limestone, granite or basalt), riverside slopes, alt. 200–1800 m";"Slopes, coniferous and broadleaf mixed forests, 1300–3200 m";"Temperate forests, 1200–3000 m"