Nassella huallancaensis

HABIT Perennial; caespitose. Culms 30–60 cm long. Ligule an eciliate membrane. Leaf-blades filiform; involute; 2–8 cm long; 0.5–1 mm wide. Leaf-blade surface ribbed; scaberulous; rough adaxially.

INFLORESCENCE Inflorescence a panicle.

Panicle open; elliptic; 7–15 cm long. Primary panicle branches ascending; 3–7 cm long. Panicle branches capillary; flexuous.

Spikelets solitary. Fertile spikelets pedicelled.

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

GLUMES Glumes persistent; similar; shorter than spikelet, or reaching apex of florets, or exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; without keels. Lower glume apex acuminate. Upper glume lanceolate; 3.5–4 mm long; membranous; without keels. Upper glume apex acuminate.

FLORETS Fertile lemma lanceolate; subterete; 2.4–6 mm long; coriaceous; without keel; 5 -veined. Lemma surface tuberculate. Lemma margins convolute; covering most of palea. Lemma apex surmounted by a ring of hairs; awned; 1 -awned. Principal lemma awn flexuous, or geniculate; 10–12 mm long overall; without a column, or with a straight or slightly twisted column. Palea 0 -veined; without keels.

FLOWER Anthers 3. Stigmas 2. Ovary glabrous.

FRUIT Caryopsis with adherent pericarp; fusiform. Hilum linear.

DISTRIBUTION South America: western South America.

NOTES Stipeae. Gr Peru 1995.

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