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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.
Festuca renvoizei
HABIT Perennial; caespitose; clumped moderately. Basal innovations intravaginal. Culms erect; 40–50 cm long; 1 -noded. Culm-internodes terete; antrorsely scabrous. Lateral branches lacking. Leaf-sheaths open for most of their length; glabrous on surface. Leaf-sheath auricles absent. Ligule a ciliolate membrane; 1.2–1.5 mm long; membranous. Leaf-blades filiform; conduplicate; circular in section; 20–30 cm long; 0.5–0.7 mm wide. Leaf-blade venation comprising 5–8 vascular bundles; with 5 inner ridges; with 7 subepidermal sclerenchyma strands; with sclerenchyma strands widened to form a discontinuous subepidermal layer. Leaf-blade apex obtuse.
INFLORESCENCE Inflorescence a panicle.
Panicle contracted; linear; continuous; 11–17 cm long; 0.5–0.7 cm wide. Primary panicle branches appressed. Panicle axis scabrous. Panicle branches scabrous.
Spikelets appressed; solitary. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 2–3 fertile florets; with diminished florets at the apex. Spikelets lanceolate; laterally compressed; 9–10.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Spikelet callus glabrous. Rhachilla internodes glabrous. Floret callus glabrous.
GLUMES Glumes persistent; similar; subequal in width; shorter than spikelet. Lower glume lanceolate; 3.5–4.5 mm long; 0.5 length of upper glume; membranous; purple; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 7–7.5 mm long; 1 length of adjacent fertile lemma; membranous; purple; without keels; 3 -veined. Upper glume apex acute.
FLORETS Fertile lemma lanceolate; 7–7.5 mm long; chartaceous; purple; without keel; 5 -veined. Lemma surface scaberulous; rough above. Lemma apex mucronate, or awned; 1 -awned. Principal lemma awn 0.5–1 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels scabrous; pubescent. Palea surface pubescent; hairy above. Palea apex dentate; 2 -fid. Apical sterile florets resembling fertile though underdeveloped.
FLOWER Lodicules 2; lanceolate; 0.8 mm long. Anthers 3; 1–1.2 mm long. Ovary glabrous.
FRUIT Caryopsis with adherent pericarp. Hilum linear.
DISTRIBUTION South America: western South America.
NOTES Poeae. Stancik 2007.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
