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trianglelobe moonwort

Scientific Name: Botrychium ascendens

Family: Ophioglossaceae

Category: Fern

Growth: Forb/herb

Duration: Perennial

Other Names: WA (triangular-lobed moonwort)

       

Triangle-Lobe Moonwort (Botrychium ascendens)

Botrychium ascendens, commonly known as triangle-lobe moonwort or upswept moonwort, is a fascinating fern species found in North America.

Considerations for Pets and Children

  • The plant has lobes which can be triangular and/or oblong.
  • The blade is fleshy and persists for several months.
  • The plant is sometimes found in home gardens.

Taxonomy and Nomenclature

  • Scientific Name: Botrychium ascendens W.H. Wagner
  • Common Names: Triangle-lobe moonwort, upswept moonwort, trianglelobe moonwort, upward-lobed moonwort, triangle moonwort.
  • Family: Belongs to the genus Botrychium, which includes moonworts, grapeferns, and rattlesnake ferns.
  • Kingdom: Plantae
  • Synonyms/Related Species: Mentions Botrychium lineare, Botrychium crenulatum, Botrychium lanceolatum, Botrychium hesperium, Botrychium simplex, Botrychium pinnatum, and Botrychium minganense.

Distribution and Habitat

  • Native to North America, ranging from British Columbia to northern regions.
  • Found in eastern Canada and New Mexico.

Morphological Characteristics

  • The blade is dark green and fleshy.
  • Appears in late spring or early summer and can last into October.
  • The sterile leaf can be broadly deltate (triangular) in outline.
  • The sterile leaf is bluish green.
  • Leaves are 2-3 times divided, triangular in outline, up to 20 cm.
  • Pinnae and lobes are well separated and mostly parallel sided.
  • Fertile segment measures 3.7 (1-6.5) cm.
  • Pinnae lobes can be lanceolate.