The following Participating Institutions are custodians for this species in the CPC National Collection:
The Arboretum at Flagstaff
The conservation of Senecio huachucanus is fully sponsored.
Joyce Maschinski, Ph.D. contributed to this Plant Profile.
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)
Distribution & Occurrence
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)
Santa Rita and Huachuca Mountains, Arizona
| 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)
Conservation, Ecology & Research
Barkley T.M. 1989. New taxa and nomenclatural combinations in senecio in Mexico and the USA. Phytologia. 67, 3: 237-253.
Barkley, T.M. 1978. Compositae: Senecio (Original Publication). North American Flora, Ser. II. 10: 124-125.
Gries, C. 1992. Conservation Page. The Plant Press. 16: 10.