Agrostis media

HABIT Perennial; caespitose; clumped densely. Culms 10–25 cm long. Ligule an eciliate membrane; 1.5–2 mm long; erose; obtuse. Leaf-blades filiform; convolute; 2–5 cm long; 0.5–1 mm wide. Leaf-blade apex acuminate.

INFLORESCENCE Inflorescence a panicle; aerial; exserted.

Panicle contracted; linear; 1–4 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 3.5–4 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus glabrous.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; shiny; gaping. Lower glume lanceolate; 3 mm long; 0.75 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume surface asperulous. Lower glume apex acuminate. Upper glume lanceolate; 3.5–4 mm long; 5 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume surface asperulous. Upper glume apex acute.

FLORETS Fertile lemma oblong; 0.7 mm long; hyaline; without keel; 5 -veined. Lemma apex truncate; awned; 1 -awned. Principal lemma awn subapical; straight; 0.5–1 mm long overall. Palea 0.75 length of lemma; hyaline.

DISTRIBUTION Antarctic: Subantarctic islands.

NOTES Aveneae. WDC 1997.

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