Agrostis merxmuelleri

HABIT Perennial; caespitose. Stolons absent, or present. Basal innovations intravaginal. Culms geniculately ascending; 30–50 cm long; rooting from lower nodes. Culm-internodes smooth; distally glabrous. Leaf-sheaths scaberulous. Ligule an eciliate membrane; 2–5 mm long. Leaf-blades flat, or involute; 7–14 cm long; 1–2.3 mm wide; glaucous. Leaf-blade surface ribbed. Leaf-blade margins scaberulous, or scabrous. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear; 7–10 cm long; 1–2 cm wide. Primary panicle branches appressed; whorled at most nodes. Panicle branches scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1–3 mm long.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate, or oblong; laterally compressed; 3–3.7 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 3–3.7 mm long; 1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume surface scabrous. Lower glume apex acute. Upper glume lanceolate; 2.9–3.6 mm long; 1.2–1.3 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume surface scabrous. Upper glume apex acute.

FLORETS Fertile lemma elliptic to oblong; 2.4–2.7 mm long; hyaline; without keel; 5 -veined. Lemma apex erose; truncate; mucronate. Palea oblong; 1.4 mm long; 0.5 length of lemma; hyaline; 0–2 -veined.

FLOWER Anthers 3; 1.5–1.8 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION Europe: southeastern.

NOTES Aveneae. Greuter & Scholz 2005.

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