(L.) Roem. & Schult.
Eleocharis geniculata is a species of spikesedge known by several common names, including bent spikerush and Canada spikesedge. This is a widespread plant of wet areas in the Americas, Asia, Africa, Australia, Madagascar, and some Pacific Islands. It is an annual spikesedge growing to a maximum height of about 40 centimeters. It has a few straw-colored leaves and many thin erect stems. The stems hold inflorescences of rounded spikelets each containing at least 10 tiny flowers. The flowers are covered with dark greenish-brown bracts. The fruit is a shiny purple-brown achene not more than a millimeter long.
- Kew World Checklist of Selected Plant Families
- Flora of China, Vol. 23 Page 196, 黑籽荸荠 hei zi bi qi, Eleocharis geniculata (Linnaeus) Roemer & Schultes, Syst. Veg. 2: 150. 1817.
- Biota of North America Program 2013 county distribution map
- Flora of North America, Eleocharis geniculata (Linnaeus) Roemer & Schultes in J. J. Roemer et al., Syst. Veg. 2: 150. 1817.
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