rhachis

The lower valve of the calyx turned to the rhachis is more than twice as small as the upper.

Spikelets 3–12-flowered, somewhat terete, the rhachis with bearded joints; terminal flower abortive.

Spikelets flattened, 5–14-flowered; the flowers somewhat separated on the jointed rhachis.

Rhachis hairy at the base of the flowers, ending in a naked pedicel.