Cenchrus L. >
Inner involucral spines connate only at the base for up to a quarter of their length
Burr c. 12 mm long; bristles antrorsely barbed, one distinctly longer the others. Spikelets 2–5 per burr. Plants tufted, up to 80 cm high. Coast. Deep sands. Introd. from Africa and Asia. Fl. summer. Buffel Grass Cenchrus pennisetiformis