SafePlants

Juncus acuminatus: Tapertip Rush

Juncus acuminatus, commonly known as tapertip rush, is a perennial rush species found in various wetland habitats. It also goes by the common names tufted rush and sharp-fruited rush.

Considerations for Pets

• The common name "sharp-fruited rush" hints at the potential for sharp features.
• As a grass-like plant, its appeal to certain pets (e.g., cats) can lead to ingestion.

Taxonomy and Nomenclature

• Scientific Name: Juncus acuminatus Michx.
• Common Names: Tapertip rush, tufted rush, sharp-fruited rush, tapered rush, knotty leaf rush, sharp fruit rush.
• Family: Juncaceae (Rush family)
• Synonyms:
  • Juncus acuminatus var. legitimus
  • Juncus pondii

Distribution and Habitat

• Native to North and Central America.
• Commonly found growing at the edge of ponds and lakes.
• Found throughout the U.S.
• Common in western Oklahoma wetlands.

Morphological Characteristics

• A tufted perennial rush.
• Grows from 40 to 80 centimeters (approximately 16 to 32 inches) in height.
• Grass-like plant with green flowers.
• Leaves are internally partitioned along their length.
• Flower heads have 5-20 heads with 10-50 flowered tepals about as long as.

Flowering Period

• Blooms from late May to August.

Ecology

• NWI status: FACW (Facultative Wetland Plant).

Traditional Uses

• Historically, rush species were dipped in fat or grease and burned as a primitive type of candle.

Further Information

• Plants of Hawaii (Forest and Kim Starr)
• USDA-NRCS PLANTS Database
• Discover Life
• Flora of North America
• CalPhotos
• Dave's Garden