Key to Cenchrus

View taxon page for Cenchrus

(For a list of species in Cenchrus, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Bur with 1 whorl of flattened, fused inner bracts subtended by 1–several whorls of smaller, finer bracts ..... C. echinatus

1' Bur with several whorls of flattened spines, these at irregular intervals through body of bur

2. Sheaths strongly keeled; bracts 45–75, slender, < 1 mm wide; 

spikelets 

1. In Poaceae, one or more florets (each a flower with subtending lemma and generally palea) and generally 2 subtending glumes; in a sterile spikelet, the flower(s) and sometimes palea(s) are rudimentary or absent. 2. In Cyperaceae, the smallest aggregation of flowers (generally more than 2) and associated bracts.

5.8–7.8 mm ..... C. longispinus

2' Sheaths 

compressed 

Flattened side-to-side or front-to-back.

, but not strongly keeled; bracts 8–40, broader at base, 1–3 mm; spikelets 3.5–5.9 mm ..... C. spinifex

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