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Descriptions

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

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

Paspalum filgueirasii

HABIT Perennial; caespitose. Culms erect; 15–45 cm long; 2–3 -noded. Culm-internodes elliptical in section; 6 cm long; smooth; distally glabrous. Culm-nodes glabrous. Lateral branches lacking. Leaf-sheaths 4–8 cm long; glabrous on surface, or pilose; with tubercle-based hairs; outer margin hairy. Ligule an eciliate membrane; 0.5 mm long. Leaf-blades filiform; involute; 15–20 cm long; 0.5 mm wide; stiff. Leaf-blade surface pilose; hairy abaxially; with tubercle-based hairs. Leaf-blade margins ciliate; hairy at base. Leaf-blade apex pungent.

INFLORESCENCE Inflorescence composed of racemes. Peduncle 15–25 cm long.

Racemes 1; single; unilateral; 2–5 cm long. Rhachis angular; 0.5–0.8 mm wide; puberulous on surface; smooth on margins, or scaberulous on margins. Spikelet packing abaxial; 2 -rowed.

Spikelets solitary. Fertile spikelets pedicelled. Pedicels oblong; glabrous, or puberulous.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; plano-convex; acute; 3.6–4 mm long; 1.2–1.4 mm wide; falling entire.

GLUMES Glumes one the lower absent or obscure, or two; reaching apex of florets; thinner than fertile lemma. Lower glume lanceolate; 0–2.4 mm long; 0–0.66 length of spikelet; membranous; 0–1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 3 -veined. Upper glume primary vein ciliate. Upper glume margins ciliate. Upper glume apex acute.

FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret elliptic; 1 length of spikelet; membranous; 3 -veined; eciliate on midvein, or ciliolate on midvein; ciliolate on margins; acute. Fertile lemma elliptic; 2.8–3.8 mm long; 1–1.3 mm wide; indurate; pallid; without keel. Lemma surface papillose. Lemma margins involute. Palea involute; indurate.

FLOWER Lodicules 2; cuneate; 0.2 mm long; fleshy. Anthers 3; 1.1–1.3 mm long.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION South America: Brazil.

NOTES Paniceae. Morrone & Zuloaga 2004.

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