;Khoonmengia;Hsuehochloa;Ampelocalamus Habit;Scrambling;"Pendulous or procumbent";Scrambling "Branching pattern";Extravaginal;Extravaginal;Transferring Nodes;"Swollen at one side";"Nearly flat";"Swollen at one side" "Mid-culm branch complement";"One central dominant branch accompanied by 1–4 lateral slender ones";"3–7 branches, subequal";"Several to numerous branches, subequal, or one or three dominant branches accompanied by numerous slender ones" Bud;"Elliptic, wholly sunken into culm";"Elliptic, wholly sunken into culm";"Ovate to broad ovate, not sunken or only base sunken into culm" "Culm sheath base";"Swollen, with a distinctive zone of transverse wrinkles";"Flat, without a distinctive zone of transverse wrinkles";"Usually swollen, without a distinctive zone of transverse wrinkles" "Culm sheath auricles";Absent;"Present, falcate, amplexicaul";"Absent or present" "Culm sheath oral setae";Absent;"Present, radiate";"Absent or present" "Presence of dots on culm";"With brownish green dots";"Without dots";"Without dots" "Leaf auricles and oral setae";Absent;Present;"Absent or present" Synflorescence;"Composed of only one spikelet, single or several to many synflorescences arranged into a raceme or panicle on leafy flowering branches";"Racemose, composed of 1 or few spikelets, single synflorescence on leafy flowering branches";"Paniculate, composed of many spikelets, on leafy or leafless flowering branches" Glumes;(0–)1–2;Unknown;2 "Number of florets per spikelet";7–9;5;2–7 "Anther color";Purple;Purple;Yellow Caryopsis;"Nut-like, with hardened pericarp and loosely adherent lemma and palea";Unknown;"Grain-like, without hardened pericarp and with closely adherent lemma and palea" Distribution;"Central-southern Vietnam";"Southwest China (Guizhou)";"South and Southwest China (Gansu, Chongqing, Sichuan, Guizhou, Yunnan, Hainan)" Habitat;"Granite montane, alt. 1500 m";"Limestone montane, alt. 500–950 m";"Limestone, granite or basalt montane, alt. 200–1800 m"