Eulalia ridleyi

HABIT Perennial. Stolons present. Culms 20–45 cm long; rooting from lower nodes. Culm-nodes glabrous. Ligule an eciliate membrane; 0.5–1 mm long. Leaf-blades involute; 3–7 cm long; 1–3 mm wide.

INFLORESCENCE Inflorescence composed of racemes.

Racemes 3–6; digitate; 4–6 cm long. Rhachis fragile at the nodes; angular; ciliate on margins. Rhachis hairs white. Rhachis internodes linear; 2.5–3 mm long. Rhachis internode tip transverse.

Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster. Pedicels linear; angular; 2.5–3 mm long; ciliate.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets cuneate; dorsally compressed; 3.5–4 mm long; falling entire; deciduous from the base, or with accessory branch structures. Spikelet callus base obtuse; attached transversely.

GLUMES Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma. Lower glume oblong; 1 length of spikelet; cartilaginous; dark brown; without keels; 6–9 -veined. Lower glume surface flat; pilose. Lower glume hairs dark brown. Lower glume apex truncate. Upper glume elliptic; dark brown; without keels; 5–7 -veined. Upper glume surface pilose. Upper glume hairs dark brown. Upper glume apex truncate; muticous.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret 0.4 mm long; 0.1–0.2 length of spikelet; hyaline; 0 -veined; without midvein; without lateral veins. Fertile lemma linear; 1.2 mm long; hyaline; without keel; 1 -veined. Lemma apex entire; awned; 1 -awned. Principal lemma awn apical; geniculate; 5.6 mm long overall; with twisted column. Column of lemma awn glabrous. Palea absent or minute.

FLOWER Anthers 3; 1.8 mm long.

DISTRIBUTION Asia-tropical: Malesia.

NOTES Andropogoneae. Gilliland.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.