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.

Homolepis longispicula

HABIT Perennial; caespitose. Rhizomes short. Butt sheaths coriaceous. Culms erect; 40–90 cm long. Culm-internodes hollow; 6–26 cm long. Culm-nodes flush with internodes; glabrous. Lateral branches lacking. Leaves without demarcation between sheath and blade. Leaf-sheaths 6–21 cm long; keeled; glabrous on surface; outer margin glabrous, or hairy. Ligule a fringe of hairs; 0.3–0.6 mm long. Leaf-blades linear, or lanceolate; involute; 6–20 cm long; 2–6 mm wide; stiff. Leaf-blade surface glabrous, or pubescent; hairy on both sides. Leaf-blade apex acute, or acuminate.

INFLORESCENCE Inflorescence a panicle.

Panicle contracted; linear, or lanceolate; 6–20 cm long; 1–7 cm wide. Primary panicle branches appressed. Panicle axis smooth. Panicle branches glabrous in axils.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels clavate; 5–25 mm long; smooth; glabrous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; acuminate; 9–11 mm long; 2–2.9 mm wide; falling entire.

GLUMES Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume ovate; 1 length of upper glume; 1 length of spikelet; membranous; without keels; 5–7 -veined. Lower glume surface glabrous, or villous. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; with hyaline margins; without keels; 5 -veined. Upper glume surface pilose. Upper glume apex acuminate.

FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret ovate; 1 length of spikelet; membranous; 5–7 -veined; pubescent; acute. Palea of lower sterile floret 1 length of lemma. Fertile lemma elliptic; 6.7–7.8 mm long; cartilaginous; pallid; without keel. Lemma surface glabrous, or pubescent; hairy above. Lemma margins flat; covering most of palea. Lemma apex acute. Palea 1 length of lemma; cartilaginous.

FRUIT Caryopsis with adherent pericarp; oblong; 2.9 mm long. Embryo 0.4 length of caryopsis. Hilum linear; 1 length of caryopsis.

DISTRIBUTION South America: Brazil.

NOTES Paniceae. Zuloaga.

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