Antennaria dimorpha

Antennaria dimorpha is a North American species of flowering plants in the family Asteraceae known by the common names low pussytoes or gray cushion pussytoes.[2] It is native to western Canada (British Columbia, Alberta, Saskatchewan) and the western United States as far south as Riverside County in California and Rio Arriba County in New Mexico. It is generally found in dry areas. There are historical records of the species formerly occurring in northwestern Nebraska, but these populations appear now to be gone.[3]

Antennaria dimorpha
Antennaria dimorpha near Monitor, Chelan County Washington

Secure  (NatureServe)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Antennaria
Species:
A. dimorpha
Binomial name
Antennaria dimorpha
Synonyms[1]
  • Antennaria latisquama Piper
  • Antennaria macrocephala (D.C.Eaton) Rydb.
  • Gnaphalium dimorphum Nutt.

Description

Antennaria dimorpha is a small mat-forming perennial herb growing in a flat patch from a thick, branching caudex. The spoon-shaped leaves are up to about a centimeter long and green but coated with long, gray hairs. The erect inflorescences are only a few centimeters tall and flowers often appear nestled among the foliage. Each stem holds a single flower head lined with dark brown and green patched phyllaries. It is dioecious, with male plants bearing heads of staminate flowers and female plants bearing heads of larger pistillate flowers. The fruit is an achene with a long, soft, barbed pappus. Older plants sometimes develop a dead spot in the center, with new growth forming a ring on the outside.

Habitat

Antennaria dimorpha grows in dry, open places in scablands, sagebrush desert, and ponderosa pine forest openings, often on very rocky soils.[4]

References
  1. The Plant List Antennaria dimorpha (Nutt.) Torr. & A.Gray
  2. Calflora taxon report, University of California, Antennaria dimorpha (Nutt.) Torrey & A. Gray Gray Cushion Pussytoes, low pussytoes
  3. Biota of North America Program 2014 county distribution map
  4. Burke Herbarium Image Collection| http://biology.burke.washington.edu/herbarium/imagecollection/taxon.php?Taxon=Antennaria dimorpha


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.