The following Participating Institutions are custodians for this species in the CPC National Collection:
The Arboretum at Flagstaff
The conservation of Senecio franciscanus is fully sponsored.
Joyce Maschinski, Ph.D. contributed to this Plant Profile.
The San Francisco Peaks groundsel is found only on the talus slopes in the alpine zone on San Francisco Peaks. San Francisco Peaks is a strato-volcano that rises abruptly from 2130 meters (7000 feet) to an elevation of 3852 meters (12,633 feet). This volcano is located north of Flagstaff, Arizona, and is the highest point in the southwestern United States. It is the home of the only true alpine zone in Arizona. (Goodwin 1978)
Senecio franciscanus is a dwarf perennial alpine plant that grows low to the rocky ground where it is found, to a height of only 3 to 10 cm (1.25-4 inches). Flowering stems emerge from ruffled-edge leaves with purple undersides. These stems hold clusters of one to six flowers that each contain 8 to 13 yellow ray flowers. (Barkley 1968; USFWS 1982)
Distribution & Occurrence
Found in alpine tundra areas of southwestern spruce-fir forests on talus slopes between elevations of 10,991 and 12,303 feet. (USFWS 1982)
|Approximately 5000 individuals occur in discrete patches in an area of less than 2.6 square kilometers on the San Francisco Peaks. (USFWS 1983)|
Conservation, Ecology & Research
Reproduction is most often vegetative via rhizomes, but occasionally via seed. (USFWS 1982)
Trampling from off-trail hiking
Natural disturbances, such as avalanches on the steep talus slopes where the species resides
Barkley, T.M. 1968. Taxonomy of Senecio multilobatus and its allies. Brittonia. 20: 267-284.
Frankel, O.H.; Soule, M.E. 1981. Conservation and evolution. Cambridge, England: Cambridge University Press. 327p.
Greene, E. 1889. New or noteworthy species VI. Pittonia. 2: 13-24.
Kartesz, J.T. 1996. Species distribution data at state and province level for vascular plant taxa of the United States, Canada, and Greenland (accepted records), from unpublished data files at the North Carolina Botanical Garden.
Linhart, Y.B.; Premoli, A.C. 1993. Genetic Variation in Aletes acaulis and Its Relative, the Narrow Endemic A. humilis (Apiaceae). American Journal of Botany. 80, 5: 598-605.
Little, E. 1941. Alpine flora of San Francisco Mountain, Arizona. Madroo. 6: 65-96.
O'Kane, S.L. 1988. Colorado's rare flora. Great Basin Naturalist. 48, 4: 434-484.
USFWS. 1982. San Francisco Peaks Groundsel Proposed as Threatened. Endangered Species Technical Bulletin. 7, 12: 1, 7.