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.

Panicum wettsteinii

HABIT Perennial. Rhizomes elongated. Culms erect; 25–45 cm long. Ligule a ciliate membrane. Leaf-blades linear, or lanceolate; 6–11 cm long; 3–6 mm wide. Leaf-blade surface glabrous. Leaf-blade apex pungent.

INFLORESCENCE Inflorescence a panicle.

Panicle open; ovate; 3.5–7 cm long; evenly furnished. Primary panicle branches spreading; moderately divided.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets oblong; dorsally compressed; 2–3 mm long; falling entire.

GLUMES Glumes reaching apex of florets; thinner than fertile lemma. Lower glume ovate; 0.66 length of spikelet; membranous; without keels; 3 -veined. Lower glume apex acute. Upper glume ovate; 1 length of spikelet; membranous; without keels; 5 -veined. Upper glume apex acute.

FLORETS Basal sterile florets male, or barren; with palea. Lemma of lower sterile floret similar to upper glume; ovate; 1 length of spikelet; membranous; 5 -veined; acute. Fertile lemma elliptic; dorsally compressed; 2.3 mm long; indurate; pallid; shiny; without keel. Lemma margins involute. Palea involute; indurate.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION South America: Brazil.

NOTES Paniceae. Gr Bahia 1995.

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