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weak sedge

Scientific Name: Carex laxa

Family: Cyperaceae

Category: Monocot

Growth: Graminoid

Duration: Perennial

Other Names:

       

Carex Species: A Diverse Group of Sedges

This page explores various Carex species, commonly known as sedges. These plants belong to the Cyperaceae family and exhibit a wide range of characteristics and habitats.

Considerations for Pets

  • Some Carex species, like the "little prickly sedge" (Carex echinata Murr. ssp. echinata), have prickly features.

Scientific Names and Common Names

  • Carex laxa Wahlenb.: Weak Sedge
  • Carex seorsa: Weak Stellate Sedge
  • Carex supina: Weak Arctic Sedge
  • Carex debilis Michx.: Weak Sedge, White-edged Sedge
  • Carex infirminervia: Weak-Nerved Sedge
  • Carex glareosa: Weak-Clustered Sedge

Taxonomy and Nomenclature

  • Family: Cyperaceae (Sedge Family)
  • Section: Sylvaticae (for Carex debilis)
  • Taxonomic Rank: Includes species (e.g., Carex seorsa), subspecies (e.g., Carex supina ssp. spaniocarpa), and varieties (e.g., Carex debilis var. debilis).
  • Synonyms: The text implies the existence of synonyms by stating "learn more about names for this taxon" for Carex seorsa.

Distribution and Habitat

  • Many Carex species are found in Minnesota.
  • Carex seorsa (Weak Stellate Sedge) is found in moist forests and stream banks.
  • Specific habitats mentioned include shady acidic swamps, usually on sandy soil (for Weak Stellate Sedge), and moist forested banks.
  • Carex laxiculmis (Weak-stemmed Wood Sedge) distribution is tracked in the ISM Herbarium.

Morphological Characteristics and Growth Habits

  • Some sedges are clump-forming.
  • Carex seorsa (Weak Stellate Sedge) is a loosely tufted, spreading sedge with weak stems, growing up to 1 foot tall.
  • It has flat, soft, thin blades.
  • The stems of dewey sedge can range from 20-120 cm tall.

Interactions with Other Organisms

  • Mentions of sedges on floating mats in bog environments suggest interactions with other colonizing plant species.

Further Information

  • Flora of North America Association, Vol. 23:323 is referenced.
  • Discover Life provides information on the biology, natural history, ecology, identification, and distribution of Carex laxa.