Isocoma pluriflora

Isocoma pluriflora, commonly called southern jimmyweed or southern goldenbush, is a North American species of flowering perennial herbs in the family Asteraceae. It grows in northern Mexico (Baja California Sur, Sonora, Chihuahua, Coahuila, Nuevo León) and in the southwestern and south-central United States (Arizona, New Mexico, Colorado and Texas).[2][3][4]

Isocoma pluriflora
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Isocoma
Species:
I. pluriflora
Binomial name
Isocoma pluriflora
Synonyms[1]
Synonymy
  • Linosyris pluriflora Torr. & A.Gray 1842
  • Aster heterophyllus (A.Gray) Kuntze 1891 not Thunb. 1800
  • Bigelowia pluriflora (Torr. & A.Gray) A.Gray
  • Bigelowia wrightii (A.Gray) A.Gray
  • Bigelovia pluriflora (Torr. & A.Gray) A.Gray
  • Bigelovia wrightii (A.Gray) A.Gray
  • Chrysocoma graveolens Torr.
  • Haplopappus heterophyllus (A.Gray) S.F.Blake
  • Haplopappus pluriflorus (Torr. & A.Gray) H.M.Hall
  • Isocoma halophytica B.L.Turner
  • Isocoma heterophylla (A.Gray) Greene
  • Isocoma hirtella (A.Gray) A.Heller
  • Isocoma oxylepis Wooton & Standl.
  • Isocoma wrightii (A.Gray) Rydb.
  • Linosyris heterophylla A.Gray
  • Linosyris hirtella A.Gray
  • Linosyris wrightii A.Gray

Isocoma pluriflora grows 1–3.5 feet (0.30–1.07 m) tall. Leaves are narrow, up to 5 cm (2 inches) long. The plant produces numerous flower heads in a cluster at the top of the stem, each head with 8-21 yellow disc flowers but no ray flowers. The species is named "pluriflora", 'many flowered', for its up to 25-50 vertical and approximately parallel stalks, tipped with yellow golden flower heads.[5]

References
  1. The Plant List, Isocoma pluriflora (Torr. & A.Gray) Greene
  2. Biota of North America Program 2014 county distribution map
  3. SEINet, Southwestern Biodiversity, Arizona chapter photos, descriptions, distribution map
  4. Nesom, G.L. 1991. Taxonomy of Isocoma (Compositae: Astereae). Phytologia 70(2): 69–114 description and discussion of I. pluriflora on pages 102-106, distribution map on page 73
  5. Flora of North America, Isocoma pluriflora (Torrey & A. Gray) Greene, 1894. Southern jimmyweed


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