Gander's Ragwort [Senecio ganderi Barkley & Beauchamp]

Gander's Ragwort [Senecio ganderi Barkley & Beauchamp]

Listing CNPS List 1B R-E-D Code 3-2-3

State/Federal. Status -- CR/C2 ASTERACEAE Apr.-May

Global Rank G2 State Rank S2.2

Distribution: San Diego County, Riverside County

Habitat: Chaparral understory, often beneath Chamise, is the preferred habitat of this very rare plant. Las Posas stony fine sandy loam is mapped for the Lawson and Sequan Peak sites; as well as the recently discovered population well to the north near Magee Road.

Known Sites: This ragwort is a very localized endemic which is seen growing beneath chamise in a rich leaf litter on Lawson Peak. It is rare near the summit of Sequan Peak. A new population was found in late spring 1991 north of Magee Road, immediately south of the Riverside County line; approximately 200 individual plants were seen growing in gabbroic soil beneath scrub oak, toyon, and chamise. The population appears to extend northward and downslope into Riverside County. This site is well north of all previously reported populations. Data Base reports are at the head of two adjacent canyons on a north-facing slope of Tecate Peak, the northeastern slope of El Cajon Mountain, Black Mountain/Lusardi extending along the ridge from north of the lookout, west of Black Mountain Lookout on upper western slope along the truck trail, 1.2 mile southwest of Black Mountain Lookout along the truck trail, McGinty Mountain, the south side of Barber Mountain Road, and south of Barber Mountain Road at the north end of Barber Mountain.

Status: Gander's Ragwort populations are presently stable in San Diego County and Riverside County. All populations should be protected.


Copyright May 1994 Craig H. Reiser.

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