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Dissections:
Tragus berteronianus

TRAGUS Haller
Plants hermaphroditic, stoloniferous, perennial or annual (ours). Culms erect or ascending or geniculate or mat forming, glabrous; internodes solid, terete. Leaves basal and cauline, not distinctly distichous; sheaths terete, margins open; auricles absent; ligules a ciliate membrane; blades flat, or folded, linear to attenuate, somewhat stiff. Panicles narrow (spike like); primary branches short, divergent, spirally arranged, 2-5 spikelets with the upper 2-3 sterile or rudimentary. Spikelets in clusters of 2-5, dorsiventrally compressed, disarticulation as a cluster, awnless, sessile or subsessile; florets 1, reduced floret absent, callus glabrous, rachilla not extending beyond upper floret; glumes 1 or 2, first veinless (reduced or absent), second 5-7-veined (veins inconspicuous), second glumes with 5 rows of hooked spines on the back, very unequal, longer than first floret, glabrous, awnless; lemmas 3-veined, membranous, glabrous, entire, awnless; paleas 2-veined, awnless, glabrous. Stamens 3; anthers pale yellow. Caryopses elliptical, dorsiventrally compressed golden brown. Base chromosome number x=10.

A genus of about seven species, mostly from Africa. These species are disturbance species of tropical or subtropical regions. These species are poor livestock forage.