Tetraneuris acaulis

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Tetraneuris acaulis
Hymenoxys acaulis (7279725494).jpg

Secure (NatureServe)
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Tetraneuris
T. acaulis
Binomial name
Tetraneuris acaulis
(Pursh) Greene 1898
  • Gaillardia acaulis Pursh 1813
  • Actinea acaulis (Pursh) Spreng.
  • Actinella acaulis (Pursh) Nutt.
  • Cephalophora acaulis (Pursh) DC.
  • Hymenoxys acaulis (Pursh) K.F. Parker
  • Picradenia acaulis (Pursh) Britton
  • Ptilepida acaulis (Pursh) Britton
  • Actinea eradiata (A.Nelson) A.Nelson
  • Actinea incana (A.Nelson) A.Nelson
  • Actinea osterhoutii A.Nelson
  • Actinea simplex (A.Nelson) A.Nelson
  • Actinella eradiata (A.Nelson) A.Nelson
  • Actinella incana (A.Nelson) A.Nelson
  • Actinella simplex (A.Nelson) A.Nelson
  • Tetraneuris eradiata A.Nelson
  • Tetraneuris incana A.Nelson
  • Tetraneuris pygmaea (A.Gray) Wooton & Standl.
  • Tetraneuris septentrionalis Rydb.
  • Tetraneuris simplex A.Nelson
  • Actinea arizonica (Greene) A.Nelson
  • Tetraneuris arizonica Greene
  • Actinea argentea (A.Gray) Kuntze
  • Actinea formosa (Greene ex Wooton & Standl.) A.Nelson
  • Actinea leptoclada (A.Gray) Kuntze
  • Actinella leptoclada A.Gray
  • Actinea lanigera Daniels
  • Tetraneuris brevifolia Greene
  • Tetraneuris lanata Greene
  • Tetraneuris lanigera Daniels
  • Actinea epunctata (A.Nelson) A.Nelson
  • Actinella epunctata (A.Nelson) A.Nelson
  • Tetraneuris crandallii Rydb.
  • Tetraneuris epunctata A.Nelson

Tetraneuris acaulis is a North American species of flowering plants in the sunflower family.[1][2][3][4][5][6][7] Common names include angelita daisy,[8] stemless four-nerve daisy,[9] stemless hymenoxys,[4] butte marigold,[10] and stemless rubberweed.[10]


T. acaulis is a highly variable perennial herb[2] which may be quite tiny to over 60 centimeters (2 feet) in height. The erect stems are surrounded by basal leaves.[11] The leaves are up to 7.5 cm (3 in) long,[11] hairy or hairless, and glandular or without glands. It flowers from June to September.[11][4][5] There may be few or many flower heads borne singly on hairy stalks. The base of each flower head is up to 1.6 cm (58 in) wide. The head contains 8 to 21 yellow ray florets each up to 2 cm (34 in) long. At the center are many yellow disc florets, sometimes 200 or more. The fruits are dry achenes only a few millimeters long.[7] Some plants may have no ray florets.[11]


It is generally accepted that there are four varieties of this species:[7][12]

Distribution and habitat[edit]

The species is widespread across much of the western and central United States, west-central Canada (Alberta, Saskatchewan) and northern Mexico (Chihuahua, Coahuila, Zacatecas).[16][4][12] It grows in a variety of habitat types in foothills and subalpine regions,[5] and high prairie, badlands,[4] and plains.[2]


Tetraneuris acaulis has been used as a traditional medicinal plant. The Hopi used a poultice of the plant to relieve hip and back pain in pregnant women, and to make a stimulating drink.[17]


  1. ^ Tetraneuris acaulis. ITIS.
  2. ^ a b c Tetraneuris acaulis Lady Bird Johnson Wildflower Center, University of Texas.
  3. ^ Hymenoxys acaulis. The Jepson Manual, University of Calilfornia
  4. ^ a b c d e Hymenoxys acaulis Archived 2013-02-02 at the Wayback Machine. United States Geologic Survey, Native Wildflowers of the North Dakota Grasslands.
  5. ^ a b c Tetraneuris acaulis. Southwest Colorado Wildflowers.
  6. ^ Tetraneuris acaulis. CalFlora taxon report, University of California
  7. ^ a b c Tetraneuris acaulis. Flora of North America.
  8. ^ Arizona Municipal Water Users Association, Low Water-use Plants
  9. ^ a b Tetraneuris acaulis. United States Department of Agricultgure Plants Profile
  10. ^ a b Tetraneuris acaulis. Canadensys.
  11. ^ a b c d Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. p. 381. ISBN 978-0-375-40233-3.
  12. ^ a b SEINet, Southwestern Biodiversity, Arizona chapter photos, description, distribution map
  13. ^ Tetraneuris acaulis. Tropicos
  14. ^ Welsh, Stanley Larson. 1993. Rhodora 95(883/884): 398–399 diagnosis in Latin, commentary in English
  15. ^ Welsh, Stanley Larson. 1993. Rhodora 95(883/884): Plate 1, figure 5 line drawing of Tetraneuris acaulis var. nana
  16. ^ Biota of North America Program 2014 county distribution map
  17. ^ Tetraneuris acaulis'. University of Michigan, Dearborn, Native American Ethnobotany Database.

External links[edit]