CPC Plant Profile: Huachuca Groundsel
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Plant Profile

Huachuca Groundsel (Senecio multidentatus var. huachucanus)

The Huachuca groundsel produces small yellow flowers at the tips of the plants upper branches. Photo Credit: Janette Milne
  • Global Rank: T2 - Imperiled
  • Legal Status: N/A
  • Family: Asteraceae
  • State: AZ, MX, SI
  • Nature Serve ID: 154600
  • Date Inducted in National Collection: 06/18/1986

This species has a disjunct distribution, occurring on a mountain in Chihuahua, Mexico, and in two mountain ranges in Arizona. (Toolin 1982) Senecio huachucanus is a perennial herb with a single stem that branches from the middle and grows up to 32 inches (80 cm) tall. Lower leaves are lance-shaped, while upper leaves have toothed margins. Small yellow flowers are produced during the months of September and October, and are borne in heads of several clusters at the tips of branches. (Barkley 1978; Toolin 1982)

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Nature Serve Biotics
  • 05/02/2017

Occurs mainly in southeastern Arizona in the Huachuca Mountains and the Santa Rita Mountains and Sonora, Mexico. Few recent collections but data for the last 20 years suggest there about 30 sites.

Joyce Maschinski, Ph.D.
  • 01/01/2010

Because this species is more widespread than once thought, threats are relatively small.

Joyce Maschinski, Ph.D.
  • 01/01/2010

The one known Santa Rita population likely contains thousands of plants on many acres on remote wilderness land. (USFWS 1996) Surveys since 1991 have discovered numerous new populations at sites in the Huachuca Mountains, Sierra Azula, and Santa Rita Mountains. The U.S. Fish and Wildlife Service states that this species is more widespread than it was thought to be when it was listed for federal candidate status, and removed it from candidate status in 1996. (USFWS 1996; Gries 1992)

Joyce Maschinski, Ph.D.
  • 01/01/2010

None known.

Joyce Maschinski, Ph.D.
  • 01/01/2010

None known.


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Taxon Senecio multidentatus var. huachucanus
Authority (A. Gray) T.M. Barkley
Family Asteraceae
CPC Number 3932
ITIS 530323
Common Names Huachuca groundsel | Huachuca Mountain ragwort
Associated Scientific Names Senecio huachucanus | Senecio multidentatus var. huachucanus
Distribution Fraile Mountain, Chihuahua, MexicoSanta Rita and Huachuca Mountains, Arizona(Toolin 1982)
State Rank
State State Rank
Arizona S2
Mexico *FR83
Sonora S1

Grows in moist, loamy soils on shady, west-north-facing slopes in ponderosa pine forests at elevations of 7000 to 9500 ft. (2286 to 2590 meters). (Toolin 1982)Dominant associates include Pinus ponderosa, Pseudotsuga menziesii, Quercus hypoleucoides, and Q. reticulata. This species is also associated with the rare Lilium parryi. (Toolin 1982)

Ecological Relationships

None known.

Common Name Name in Text Association Type Source InteractionID
Cuckoo bees Centrias americanus Not Specified Link
Centris bees Ceratina dupla Not Specified Link
Sweat bees Chloralictus pilosus Not Specified Link
Sweat bees Chloralictus pruinosus Not Specified Link
Cuckoo bees Holonomada superba Not Specified Link
Sweat bees Odontalictus ligatus Not Specified Link
Sweat bees Oxystoglossa confusa Not Specified Link
Sweat bees Oxystoglossa similis Not Specified Link
Stingless bees Tetralonia dilecta Not Specified Link
Tachinid flies Cistogaster occidua Not Specified Link
Tachinid flies Epigrimyia floridensis Not Specified Link
Syrphid flies Eristalis latifrons Not Specified Link
Syrphid flies Mesogramma marginata Not Specified Link
Tachinid flies Peleteria robusta Not Specified Link
Syrphid flies Sphaerophoria cylindrica Not Specified Link
Syrphid flies Tropidia mamillata Not Specified Link
Thick-headed flies Zodion fulvifrons Not Specified Link
Potter wasps Leionotus clypeatus Not Specified Link
Lead Institution State Reintroduction Type Year of First Outplanting

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