Rhynchospora
Rhynchospora
a genus of plants of the family Cyperaceae. The plants are perennial herbs with leafy stems. The bisexual flowers grow in few-flowered spikelets. The nutlike fruit is beaked. There are about 200 species, which are distributed nearly everywhere except for arctic and arid regions. Most grow in tropical and subtropical America. There are four species in the USSR. The most common species is the white beak-sedge (R. alba,) which grows in mossy bogs in the northern and central zones of the European USSR, in western Transcaucasia, in Siberia, and in the Far East.