Miscamthus tinctorius
Morphology >General >Habit
Perennial; caespitose. Rhizomes short. Culms erect; 60-150 cm long; 2-4 mm diam.; 5-8 -noded. Culm-nodes pubescent. Leaves cauline. Leaf-sheaths glabrous on surface, or pilose; outer margin hairy. Leaf-sheath oral hairs bearded. Ligule a ciliolate membrane; 2-3 mm long. Leaf-blades 15-40 cm long; 8-14 mm wide. Leaf-blade surface glabrous, or pubescent; sparsely hairy; hairy adaxially.
Morphology >Reproductive morphology >Inflorescences
Inflorescence composed of racemes. Racemes 2-12; digitate; 10-15 cm long. Central inflorescence axis 1.5-3 cm long. Rhachis tough; angular; glabrous on surface; scaberulous on margins. Rhachis internodes filiform; 4-7 mm long. Spikelets in pairs. Fertile spikelets pedicelled; 2 in the cluster. Pedicels filiform; unequal; 0.5-4 mm long.
Morphology >Reproductive morphology Inflorescences> Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4-6 mm long; falling entire. Spikelet callus bearded; base truncate. Spikelet callus hairs white; 0.4-0.5 length of spikelet.
Fertile :
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4-6 mm long; falling entire. Spikelet callus bearded; base truncate. Spikelet callus hairs white; 0.4-0.5 length of spikelet.
Morphology >Reproductive morphology Inflorescences >Bracts >Glume
Glumes similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of spikelet; chartaceous; without keels; 3 -veined. Lower glume surface flat; pilose. Lower glume apex dentate; 2 -fid. Upper glume lanceolate; chartaceous; without keels; 3 -veined. Upper glume surface pilose. Upper glume margins ciliolate. Upper glume apex acute.
Morphology >Reproductive morphology Flowers >Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; 0.9 length of spikelet; hyaline; 0 -veined; without midvein; without lateral veins; ciliolate on margins; acute. Fertile lemma lanceolate; 3-4.5 mm long; hyaline; without keel; 1 -veined. Lemma margins ciliate; hairy above. Lemma apex entire; acuminate; muticous, or mucronate, or awned; 1 -awned. Principal lemma awn 0-1 mm long overall; not or scarcely exserted from spikelet. Palea linear; 0.2-0.5 length of lemma; 0 -veined. Palea surface pubescent; hairy on flanks. Palea apex acuminate.
Morphology > Reproductive > morphology Flowers
Anthers 3.
Distribution
Asia-temperate: eastern Asia.