Agrostis philippiana

HABIT Perennial; caespitose. Rhizomes absent, or short. Culms 35–45 cm long. Leaf-sheaths tight; 2–9 cm long; smooth. Ligule an eciliate membrane; 1.5–2 mm long; truncate. Leaf-blades 2–6 cm long; 1–2 mm wide; stiff. Leaf-blade surface smooth, or scaberulous; rough adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; oblong; 3–11 cm long; 2–8 cm wide. Primary panicle branches 2–3 -nate; whorled at lower nodes. Panicle axis smooth. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels pubescent.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets elliptic; laterally compressed; 2.1–2.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous, or sparsely hairy.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2.1–2.5 mm long; 1.3–1.4 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.

FLORETS Fertile lemma elliptic; 1.6–1.7 mm long; hyaline; without keel; 3 -veined. Lemma apex truncate; mucronate. Principal lemma awn subapical. Palea 1–1.2 mm long; hyaline.

FLOWER Lodicules 2; 0.6 mm long; membranous. Anthers 3; 1.2 mm long.

FRUIT Caryopsis with adherent pericarp; 1.3 mm long. Hilum linear.

DISTRIBUTION South America: southern South America.

NOTES Aveneae. Fl Pat 1995.

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