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Photo: Slender Rush

Juncus subtilis E. Mey.

Slender Rush

Habitat: Margins of ponds and shores [Non-tidal rivershore (non-forested, seasonally wet); Open wetland, not coastal nor rivershore (non-forested, wetland)]

Range: Newfoundland to Maine and western Quebec; Greenland.

Aids to Identification: Rushes are grass-like plants with 6 inconspicuous sepals and petals (called tepals) and capsular fruits. Juncus subtilis is easily recognized with or without flowers. It possesses septate-nodulose leaves borne in small clusters from the nodes of a prostate, creeping, or floating stem. The flowers usually number only one or two per plant.

Ecological characteristics: The flowers are sometimes modified into a tiny tuft of leaves called a bulbil. This bulbil is essentially a small plantlet and serves as a relatively inexpensive means of reproduction.

Photo: Slender Rush

Phenology: Unknown

Family: Juncaceae

Synonyms: None noted

Known Distribution in Maine: This rare plant has been documented from a total of 5 town(s) in the following county(ies): Aroostook, Piscataquis, Somerset.

Dates of documented observations are: 1900, 1901 (2), 1995

Reason(s) for rarity: At southern limit of range.

Conservation considerations: Unknown.