Isachne salzmannii

HABIT Annual. Culms decumbent; 35–40 cm long; rooting from lower nodes. Ligule a fringe of hairs. Leaf-blades linear, or lanceolate; 5–10 cm long; 4–10 mm wide. Leaf-blade apex acute.

INFLORESCENCE Inflorescence a panicle.

Panicle open; oblong; 7–10 cm long. Primary panicle branches ascending. Panicle branches flexuous.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets orbicular; dorsally compressed; 1.5–2 mm long; breaking up at maturity; disarticulating below each fertile floret.

GLUMES Glumes deciduous; similar; shorter than spikelet, or reaching apex of florets; thinner than fertile lemma. Lower glume orbicular; 0.9–1 length of spikelet; membranous; without keels; 5 -veined. Lower glume apex obtuse. Upper glume orbicular; 0.9–1 length of spikelet; membranous; without keels; 5 -veined. Upper glume apex obtuse.

FLORETS Basal sterile florets male; with palea. Lemma of lower sterile floret elliptic; 1.5–2 mm long; chartaceous; obtuse. Fertile lemma orbicular; 1.3–1.7 mm long; coriaceous; without keel. Lemma margins involute. Lemma apex obtuse. Palea coriaceous; 2 -veined.

FLOWER Anthers 3.

FRUIT Caryopsis with adherent pericarp.

DISTRIBUTION South America: Brazil.

NOTES Isachneae. Gr Bahia 1994.

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