Juncus secundus

Secund Rush, a reference photo
Photo: Robert H. Mohlenbrock. USDA NRCS. 1995. Northeast wetland flora: Field office guide to plant species. Northeast National Technical Center, Chester. Courtesy of USDA NRCS Wetland Science Institute. · Public domain

Juncus secundus, the lopsided rush, one-sided rush, or second rush, is a species of flowering plants in the family Juncaceae. It is native to eastern North America and has been introduced to Primorsky Krai in Russia. It is typically found in serpentine, granite, and other barrens.

From Wikipedia, under CC BY-SA 4.0.

Is it poisonous?

We have no record of Secund Rush being toxic, poisonous or venomous. That is not proof that it is safe. Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

Classification

Kingdom
Plantae
Phylum
Tracheophyta
Class
Liliopsida
Order
Poales
Family
Juncaceae
Genus
Juncus
Species
Juncus secundus

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