E-Flora BC: Electronic Atlas of the Flora of British Columbia

Juncus bufonius var. congestus L.
Juncaceae (Rush family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #10044)

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Distribution of Juncus bufonius var. congestus
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Species Information

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General:
Annual herb from fibrous roots; stems erect or sprawling, 2-45 cm tall.
Leaves:
Located on the lower part of the stem, nearly circular in cross-section, lacking cross-walls.
Flowers:
Inflorescence terminal, open, commonly much branched, long, forming about 1/2 to 3/4 of the plant height, with many single flowers; perianth segments green, 2.5-6 mm long, pointed, about equal; stamens 6; anthers 0.5-1 mm long, shorter than the filaments; lower bract leaflike, nearly circular in cross-section, tapered, usually shorter than the inflorescence.
Fruits:
Capsules, cylindrical to nearly globe-shaped, pointed, shorter than the perianth segments; seeds barrel-like, about 0.4 mm long, lacking tail-like appendages.
Notes:
Variable species with a large number of chromosomal races. Several taxa within this complex have been described and treated as distinct species or varieties.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet open places, disturbed sites, fields, gardens, roadsides, lakeshores, riverbanks and forest margins in all vegetation zones except the alpine; common throughout BC; cosmopolitan, N to AK, YT and NT, E to NF and S to ME, MA, PA, NC, FL, MS, TX, NM, AZ and CA; Eurasia; apparently both native and introduced in our area.

Source: The Illustrated Flora of British Columbia

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