| 释义 |
great bulrush
noun
: any of several large plants of the genus Scirpus: as
a. : a tall Eurasian sedge (S. lacustris) with naked terete stems and a compound umbel of numerous capitate spikes
b. : a bulrush (S. validus) of tropical America and southern United States with a stout scaly reddish rhizome, thick pliable culm, and spikelets in close fascicles or glomerules; also : a bulrush chiefly of northern No. America that is a variety (S. validus creber) of the above distinguished especially by lax panicles |