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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.
Nassella novarii
HABIT Perennial; caespitose. Basal innovations extravaginal and intravaginal. Culms erect, or geniculately ascending; 15–65 cm long. Culm-internodes distally glabrous. Lateral branches lacking. Leaf-sheaths mostly shorter than adjacent culm internode; glabrous on surface, or puberulous. Leaf-sheath oral hairs ciliate. Ligule an eciliate membrane; 1–2.5 mm long; 0.5 mm long on basal shoots. Leaf-blades flat, or convolute; 4–14 cm long; 1.5–2.5 mm wide. Leaf-blade surface pubescent; hairy adaxially, or on both sides.
INFLORESCENCE Inflorescence a panicle; embraced at base by subtending leaf.
Panicle open; 10–35 cm long. Panicle axis glabrous. Panicle branches glabrous.
Spikelets solitary. Fertile spikelets pedicelled. Pedicels glabrous, or puberulous.
FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 8.5–12 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.5–2 mm long; pubescent; pungent.
GLUMES Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 8.5–12 mm long; 1 length of upper glume; membranous; purple; without keels; 3 -veined. Lower glume apex attenuate. Upper glume lanceolate; 8.5–12 mm long; membranous; purple; without keels; 3 -veined. Upper glume apex attenuate.
FLORETS Fertile lemma linear; subterete; 6.5–7 mm long; coriaceous; light brown; without keel; 5 -veined. Lemma midvein ciliate; hairy below. Lemma surface scaberulous; rough above; glabrous, or pilose; hairy above and at base. Lemma margins convolute; covering most of palea. Lemma apex surmounted by a ring of hairs; with this appendage 0.8–1.2 mm long; awned; 1 -awned. Principal lemma awn bigeniculate; 38–55 mm long overall; with 25–39 mm long limb; with twisted column; deciduous. Middle segment of lemma awn pubescent. Column of lemma awn 9–13 mm long; ciliate; with 2 mm long hairs. Palea 2–3 mm long; 0.5 length of lemma; 0 -veined; without keels.
FLOWER Lodicules 2. Anthers 3. Stigmas 2.
FRUIT Caryopsis with adherent pericarp; linear; 4.3–5.5 mm long. Hilum linear; 1 length of caryopsis.
DISTRIBUTION South America: southern South America.
NOTES Stipeae. Torres 1997.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.
