Note - this takes you off
of our website |
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.
Paspalum hartwegianum
HABIT Perennial. Culms decumbent; 40–80 cm long; without nodal roots, or rooting from lower nodes. Leaf-sheaths pilose; with tubercle-based hairs. Ligule an eciliate membrane. Leaf-blades linear; conduplicate, or involute; 10–35 cm long; 2–6 mm wide. Leaf-blade surface glabrous; hairless except near base. Leaf-blade margins scabrous.
INFLORESCENCE Inflorescence composed of racemes.
Racemes 4–7; borne along a central axis; unilateral; 2–9 cm long. Central inflorescence axis 1–5 cm long. Rhachis narrowly winged; angular; 1–1.5 mm wide. Spikelet packing 4 -rowed.
Spikelets in pairs. Fertile spikelets pedicelled.
FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; plano-convex; acute; 3 mm long; falling entire.
GLUMES Glumes one the lower absent or obscure; reaching apex of florets; thinner than fertile lemma. Upper glume elliptic; 1 length of spikelet; membranous; without keels; 3 -veined. Upper glume surface glabrous, or puberulous. Upper glume apex obtuse.
FLORETS Basal sterile florets barren; without significant palea. Lemma of lower sterile floret similar to upper glume; elliptic; 1 length of spikelet; membranous; 3 -veined; obtuse. Fertile lemma elliptic; gibbous; 3 mm long; indurate; light brown; without keel. Lemma margins involute. Lemma apex obtuse. Palea involute; indurate.
DISTRIBUTION North America: south-central USA and Mexico. South America: Mesoamericana, western South America, and southern South America.
NOTES Paniceae. Gr Texas 1993.
Please cite this publication as detailed in How to Cite Version: 3rd February 2016.