Ionactis_alpina

<i>Ionactis alpina</i>

Ionactis alpina

Species of plant

Ionactis alpina (formerly Aster scopulorum; common name lava ankle-aster) is a species of flowering plant in the family Asteraceae known by the common name lava aster. It is native to western United States from California to Montana,[2] where it grows in dry areas.[3]

Quick Facts Ionactis alpina, Scientific classification ...

Description

Ionactis alpina is a perennial herb growing from a caudex and fibrous root system. It produces a short, mostly erect, hairy stem up to 12 centimetres (4+3⁄4 in) in height. Most of the small leaves are on the lower part of the stem. They are up to about 1 cm (3⁄8 in) long, oval to lance-shaped and pointed, somewhat stiff and coated in hairs.[4]

The inflorescence bears solitary flower heads with purple-green phyllaries, 7–21 thin blue, purple, or occasionally white ray florets surrounding 19–50 long yellow disc florets. The fruit is a hairy achene.[4]

References

  1. [1]
    The Plant List, Ionactis alpina (Nutt.) Greene
  2. [2]
    Biota of North America Program 2014 county distribution map
  3. [3]
    University of Waterloo (Canada), Astereae Lab, Ionactis alpina Lava Ankle-aster
  4. [4]
    Flora of North America, Ionactis alpina (Nuttall) Greene, 1897. Lava ankle-aster


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