Poa ferreyrae

HABIT Perennial; caespitose. Butt sheaths withering. Culms geniculately ascending; 50–80 cm long; 4–5 -noded. Lateral branches lacking. Leaf-sheaths without keel; smooth; glabrous on surface. Ligule an eciliate membrane; 4–7 mm long; truncate. Leaf-blades 10–30 cm long; 2–4 mm wide. Leaf-blade surface scaberulous; rough on both sides. Leaf-blade margins scaberulous. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic; 18–25 cm long. Panicle branches capillary.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels scaberulous.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 4.5–6 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 2.5–3.4 mm long; 0.66 length of upper glume; membranous; 1-keeled; 1–3 -veined. Lower glume lateral veins absent, or obscure. Lower glume apex acute. Upper glume ovate; 3–4 mm long; 0.66 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; 3.5–4.5 mm long; membranous; keeled; 5 -veined. Lemma surface scaberulous. Lemma apex acute. Palea keels scaberulous.

FLOWER Lodicules 2; membranous. Anthers 3; 3 mm long.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION South America: western South America.

NOTES Poeae. Tovar 1995.

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