GrassBase - The Online World Grass Flora

Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Poa anae

HABIT Perennial; caespitose. Culms erect; 9–15 cm long. Lateral branches lacking. Leaf-sheaths 2–4.5 cm long; glabrous on surface. Ligule an eciliate membrane; 0.5–1 mm long. Leaf-blades flat, or conduplicate; 2.5–6 cm long; 2–3 mm wide. Leaf-blade midrib keeled beneath.

INFLORESCENCE Inflorescence a panicle.

Panicle spiciform; linear, or oblong; interrupted; 3–4.5 cm long; 0.6–1 cm wide. Primary panicle branches appressed.

Spikelets in pairs. Fertile spikelets sessile and pedicelled.

FERTILE SPIKELETS Spikelets comprising 2 fertile florets; with a barren rhachilla extension. Spikelets oblong; laterally compressed; 3.2–3.7 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.

GLUMES Glumes persistent; similar; shorter than spikelet. Lower glume lanceolate; 3.8 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 2.9 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.

FLORETS Fertile lemma ovate; 2.9–3 mm long; membranous; keeled; 5 -veined. Lemma apex acute.

FLOWER Lodicules 2; membranous. Anthers 3.

FRUIT Caryopsis with adherent pericarp. Hilum punctiform.

DISTRIBUTION South America: western South America.

NOTES Poeae. Gr Peru 1995.

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