Habit: Rhynchospora tenuis grows as a clumping herb to 1 m in height. The leaves are arranged alternately, parallel veined, to 80 cm in length on a triangular shaped stem.
The incomplete, perfect, actinomorphic flowers are arranged in an open corymb of spikelets. The individual flowers are subtended by 1 scale. The lower flowers in each spikelet are infertile or staminate. There are no bristles or a calyx or corolla. There are 2-3 stamens. The ovary is superior with a single locule. The style is bicleft. The fruit is a dark achene at maturity.
Habitat: Rhynchospora tenuis grows along the edges of Fresh Water Wetlands and in Pine Woodlands.
Distribution: Rhynchospora tenuis on northern island groupings in the Lucayan Archipelago, Caribbean region, Central and South America.
Medicinal/Cultural/Economic usage: Rhynchospora tenuis is not known to be used medicinally in the Bahamas.