How to identify Nutgrasses (Cyperus)

Photo By Liam O'Brien , used under CC-BY-4.0 /Cropped and compressed from original

How to identify Nutgrasses (Cyperus)

Nutgrasses, also known as Papyrus sedges, Umbrella sedges, Sedges

Nutgrasses typically exhibits a tufted or clumped growth pattern peppered with slender, erect, and triangular stems, reaching heights up to 3 feet (about 91 cm). Characteristically, they brandish a collection of linear leaves at the base, which can stretch up to 20 inches (approximately 51 cm) in length. The foliage is a vibrant green with a slightly waxy texture. Atop the stems, nutgrasses forms umbrella-like clusters of small, inconspicuous flowers, often surrounded by longer bracts that can be mistaken for petals. The complex inflorescence of nutgrasses is usually spherical or spike-like, appearing in shades varying from green to brown.

Lifespan: Perennial

Leaf Type: Evergreen

Quickly Identify Nutgrasses

Triangular stems reaching 3 feet (91 cm) tall.

Linear base leaves up to 20 inches (51 cm) long.

Umbrella-like flower clusters with inconspicuous flowers.

Fruit as unique three-angled achene, small and firm.

Fruit coloration ranges from brown to greenish hues.

Detailed Traits of Nutgrasses

Fruit Features

The fruit of nutgrasses presents as a dry, indehiscent structure known as an achene. Each fruit is distinguished by its unique three-angled shape, which contributes to its distinctive appearance. Typically, the surface is a matte finish, and the coloration ranges from brown to greenish hues, depending on the maturity of the fruit. The size is generally small, with precise dimensions varying among species within the genus. The texture is firm, and the angles are often pronounced, providing vital clues for identification.

Learn About the Fruit Glossary

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