GrassBase - The Online World Grass Flora


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

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

Festuca mazzettiana

HABIT Perennial; caespitose. Basal innovations extravaginal. Culms geniculately ascending; 25–65 cm long; 1–2 mm diam. Culm-internodes smooth; distally glabrous. Leaf-sheaths loose; longer than adjacent culm internode. Leaf-sheath auricles falcate; 1 mm long. Ligule an eciliate membrane; 0.5–1 mm long; lacerate. Leaf-blades flat; 10–17 cm long; 3–4 mm wide. Leaf-blade venation comprising 13–15 vascular bundles. Leaf-blade margins scaberulous. Leaf-blade apex attenuate.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear. Primary panicle branches appressed; 2 -nate; bearing 2–3 fertile spikelets on each lower branch. Panicle axis scabrous.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels 0.5–5 mm long; scabrous.

FERTILE SPIKELETS Spikelets comprising (3–)5 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 15 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 2 mm long; eventually visible between lemmas; smooth.

GLUMES Glumes persistent; dissimilar; shorter than spikelet; similar to fertile lemma in texture. Lower glume linear; 6 mm long; 0.75–1 length of upper glume; chartaceous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume surface asperulous; rough at apex. Lower glume apex acuminate. Upper glume lanceolate; 5 mm long; 0.66–1 length of adjacent fertile lemma; chartaceous; without keels; 3 -veined. Upper glume surface asperulous; rough at apex. Upper glume apex acute.

FLORETS Fertile lemma lanceolate; 6–9 mm long; chartaceous; without keel; 5 -veined. Lemma lateral veins with distinct primaries but obscure intermediates. Lemma surface asperulous; rough on veins. Lemma apex acute; awned; 1 -awned. Principal lemma awn 10–16 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.

FLOWER Lodicules 2; 1 mm long; membranous. Anthers 3; 3 mm long. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp; 3 mm long. Hilum linear.

DISTRIBUTION Asia-temperate: China.

NOTES Poeae. Hand-Mazz 2000.

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