Axonopus triglochinoides

HABIT Perennial. Stolons present. Culms 25–65 cm long; 1–2 -noded. Culm-internodes terete. Culm-nodes glabrous, or pubescent. Leaves mostly basal; without demarcation between sheath and blade. Leaf-sheaths 8–20 cm long; without keel. Leaf-sheath oral hairs pubescent. Ligule a ciliolate membrane; 0.3–0.4 mm long. Leaf-blades 10–30 cm long; 1–2 mm wide. Leaf-blade apex filiform.

INFLORESCENCE Inflorescence composed of racemes; with 1 peduncles per sheath. Peduncle 10–17 cm long.

Racemes 2–3; paired, or digitate; ascending; unilateral; 5–10 cm long. Central inflorescence axis 0 cm long. Rhachis angular; 0.3–0.4 mm wide; drab; glabrous on surface; smooth on margins; glabrous on margins. Spikelet packing adaxial; 2.5 spikelets per cm. Raceme-bases linear; 10–15 mm long; pubescent.

Spikelets appressed; solitary. Fertile spikelets sessile.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; acuminate; 3.6–4 mm long; 1 mm wide; falling entire.

GLUMES Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume 1 length of spikelet; membranous; 3–5 -veined. Upper glume surface puberulous; hairy between veins; without hair tufts, or with an apical beard.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; 1.2 length of fertile lemma; 1 length of spikelet; 3–5 -veined; puberulous; hairy between veins; without hair tufts, or with conspicuous apical hairs. Fertile lemma 3 mm long; indurate; pallid, or yellow; without keel. Lemma margins involute. Lemma apex acuminate; pubescent. Palea involute; indurate.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION South America: northern South America and western South America.

NOTES Paniceae. Black 1994.

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