Juncus castaneus

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Juncus castaneus
Juncus castaneus.jpg
Status TNC G5.svg
Secure  (NatureServe)
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Juncaceae
Genus: Juncus
Species:
J. castaneus
Binomial name
Juncus castaneus
Sm.

Juncus castaneus is a species of rush known by the common name chestnut rush. It has a circumboreal [1] or circumpolar distribution, [2] occurring throughout the northern latitudes of the Northern Hemisphere. It occurs in Europe, Asia, and North America. In North America it occurs from Alaska to Greenland, its distribution spanning Canada and extending south through the Rocky Mountains in the contiguous United States. [1] It is widespread and common in the Canadian Arctic Archipelago. [2]

This perennial plant produces stems up to 50 centimeters tall, [2] singly or in pairs, [1] from a rhizome. There are a few leaves, the longest basal ones reaching 20 centimeters in length. There are one to five flower heads, each containing up to 10 [3] or 12 flowers. [1] Each flower has 3 brown tepals and 6 stamens. The fruit is a dry, dark brown or chestnut capsule. The seed is a few millimeters long, including its long tail. [1] [3] The plant reproduces by seed and by rhizome. [1]

This plant grows in Arctic habitat types, and farther south, on high mountains in alpine climates. It grows in wet areas, such as streambanks, bogs, and seeps. [1] [2]

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References

  1. 1 2 3 4 5 6 7 Williams, Tara Y. 1990. Juncus castaneus. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.
  2. 1 2 3 4 Aiken, S. G., et al. 1999 onwards. Juncus castaneus. Flora of the Canadian Arctic Archipelago: Descriptions, Illustrations, Identification, and Information Retrieval. Version: 29 April 2003.
  3. 1 2 Juncus castaneus. Flora of North America.