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Wyethia amplexicaulis (Nutt. ) Nutt.
Life   Plantae   Dicotyledoneae   Asteraceae   Wyethia

Wyethia amplexicaulis
© Copyright Mel Harte 2010 · 3
Wyethia amplexicaulis

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Wyethia amplexicaulis
© Copyright Mel Harte 2010 · 3
Wyethia amplexicaulis
Wyethia amplexicaulis
© Copyright Mel Harte 2010 · 3
Wyethia amplexicaulis

Wyethia amplexicaulis
© Copyright Mel Harte 2010 · 3
Wyethia amplexicaulis
Wyethia amplexicaulis
© Copyright Mel Harte 2010 · 3
Wyethia amplexicaulis

Wyethia amplexicaulis
© Copyright Mel Harte 2010 · 3
Wyethia amplexicaulis

Associates · map
FamilyScientific name @ source (records)
Apidae  Bombus bifarius @ RMBL_ENT (3)

Bombus flavifrons @ BBSL (1)

Bombus frigidus @ RMBL_ENT (1)

Bombus insularis @ RMBL_ENT (1); BBSL (1)

Bombus mixtus @ RMBL_ENT (2)

Bombus sylvicola @ RMBL_ENT (1)

Ceratina nanula @ BBSL (1)
Cercopidae  Aphrophora permutata @ AMNH_IZC (1)

Philaenus spumarius @ AMNH_IZC (4)
Dermateaceae  Marssonina wyethiae @ BPI (4)
Erysiphaceae  Sphaerotheca humuli @ BPI (2)
Halictidae  Halictus ligatus @ BBSL (1)
Megachilidae  Megachile pugnata @ BBSL (1)

Osmia montana @ LACM_ENTB (1); RMBL_ENT (1); BBSL (1)

Osmia subaustralis @ BBSL (1)
Mycosphaerellaceae  Didymaria balsamorrhizae @ 415432A (1); BPI (2); 415432B (1)

Didymaria conferta @ 415454B (1); 415454A (1); BPI (9)

Didymaria wyethiae @ BPI (2)
Pleosporaceae  Pleospora permunda @ BPI (1)
Pucciniaceae  Puccinia balsamorrhizae @ BPI (3)

Puccinia wyethiae @ BPI (8)

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Following modified from Plants Database, United States Department of Agriculture
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http://plants.usda.gov/java/profile?symbol=WYAM ---> https://plants.usda.gov/java/profile?symbol=WYAM
https://plants.usda.gov/java/profile?symbol=WYAM ---> http://plants.usda.gov/core/profile?symbol=WYAM
http://plants.usda.gov/core/profile?symbol=WYAM ---> https://plants.usda.gov/core/profile?symbol=WYAM
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Wyethia amplexicaulis (Nutt.) Nutt.

Image of Wyethia amplexicaulis

General Information
Symbol: WYAM
Group: Dicot
Family: Asteraceae
Duration: Perennial
Growth Habit : Forb/herb
Native Status : L48   N
Data Source and Documentation
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Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   


click on a thumbnail to view an image, or see all the Wyethia thumbnails at the Plants Gallery

Margaret Williams. Provided by Nevada Native Plant Society . ©Nevada Native Plant Society. Usage Requirements .

Margaret Williams. Provided by Nevada Native Plant Society . ©Nevada Native Plant Society. Usage Requirements .

Steve Hurst. Provided by ARS Systematic Botany and Mycology Laboratory . United States, NV. Usage Requirements .

C.A. Kutzleb. Provided by National Agricultural Library . Originally from USDA Forest Service . United States, CO. 1932. Usage Requirements .



Symbol Scientific Name
ESAM Espeletia amplexicaulis Nutt.


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Asteridae
Order Asterales
Family Asteraceae ⁄ Compositae – Aster family
Genus Wyethia Nutt. – mule-ears
Species Wyethia amplexicaulis (Nutt.) Nutt. – mule-ears

Subordinate Taxa

This plant has no children

Legal Status

Wetland Status

Interpreting Wetland Status

North America
Arid West FAC
Western Mountains, Valleys, and Coast FACU

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (WYAM)
CalPhotos (WYAM)
Integrated Taxonomic Information System (ESAM)
Integrated Taxonomic Information System (WYAM)
Lady Bird Johnson Wildflower Center Native Plant Information Network (WYAM)
Native American Ethnobotany (University of Michigan - Dearborn) (WYAM)
Native Plants Network (WYAM)
USDA Forest Service Fire Effects Information System (WYAM)
University of Washington Burke Museum (WYAM)



Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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Following modified from Flora of North America
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Link to Flora of North America home
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FNA Vol. 21 Page 101, 102 , 103, 104 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 21 | Asteraceae | Wyethia

4. Wyethia amplexicaulis (Nuttall) Nuttall, Trans. Amer. Philos. Soc., n. s. 7: 352. 1840.

Espeletia amplexicaulis Nuttall, J. Acad. Nat. Sci. Philadelphia 7: 38. 1834; Wyethia amplexicaulis subsp. major Piper; W. amplexicaulis subsp. subresinosa Piper; W. lanceolata Howell

Plants 25 50(—100) cm. Basal leaves: blades (green, shining) lance-elliptic or oblong-lanceolate to lanceolate, 15—30(—40+) cm, margins usually entire, sometimes denticulate or dentate, not ciliate, faces glabrous (gland-dotted, vernicose); cauline leaves similar, smaller distally (distalmost sessile, usually ± clasping). Heads usually 2—8 in ± corymbiform to racemiform arrays, sometimes borne singly. Involucres hemispheric to turbinate, 15—30 mm diam. Phyllaries 18—36+, subequal or unequal, herbaceous (at least outer), margins not ciliate, faces glabrous; outer 18—32 mm (surpassing inner). Ray florets 8—21(—25); laminae 25—60 mm. Cypselae 8—9 mm, glabrous. 2 n = 38.

Flowering May—Jul. Wet to dry, open sites, meadows, sagebrush scrub, yellow-pine forests; 400—3000 m; Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

Wyethia amplexicaulis introgressively hybridizes with W. arizonica (producing plants called W. × magna A. Nelson ex W. A. Weber) across a broad area of central and southern Colorado. Habit of the hybrid is typical of W. amplexicaulis ; the indument resembles that of W. arizonica in varying degrees. Occasionally, W. amplexicaulis hybridizes with but does not introgress with W. helianthoides .

Updated: 2020-06-07 07:26:06 gmt
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