San Diego Gumplant [Grindelia hirsutula Hook. & Arn. var. hallii (Steyerm.) M. A. Lane]

San Diego Gumplant [Grindelia hirsutula Hook. & Arn. var. hallii (Steyerm.) M. A. Lane]

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

State/Federal. Status -- /C3c ASTERACEAE Jul.-Oct.

Global Rank G5T2 State Rank S2.2

Distribution: San Diego County

Habitat: Montane meadows and lower montane Coniferous Forest, typically with sunny openings, are the preferred habitat for this species. Boomer stony loam is one soil type utilized by this sticky biennial herb. This gumplant prefers locales which are quite wet in the early spring, although such locales usually dry quickly as spring turns to summer.

Known Sites: Gumplant is abundant in areas around Cuyamaca Lake; particularly near Camp Hual-Cu-Cuish. It is also found at somewhat higher elevations such as Azalea Spring, as well as at the Shrine Camp in the Laguna Mountains, and in meadows east of Harrison Park. It grows in meadows at Pine Hills near the intersection of Eagle Peak Road and Blue Jay Drive, and as a ruderal plant along Japatul Valley Road just north of Interstate 8. Old biological survey reports note sites north of Julian along Farmer Road, nearby at the corner of Farmer Road and Wynola Road, at Crouch Meadow in the Laguna Mountains, west of Highway 79 and 2 miles southeast of Julian, the Hosking Ranch near Wynola, near Frisius Road in Pine Hills, near Eagle Peak Road and Pine Hills in the vicinity of Orinoco Gorge and Paine Bottom Gorge, and near Woodland Drive at Kentwood-in-the-Pines. Old reports are from hills south of Lake Henshaw, Mesa Grande, and Corte Madera. Data Base reports from the Lake Cuyamaca region are 0.2 mile north of Cuyamaca Reservoir, just north of La Puerta Springs, Fern Flat, east of Japacha peak at the junction of Burnt Pine and West Mesa Loop Fire Roads, the south end of Green Valley, a variety of locales within 1 mile from the junction of the East Mesa Fire Road and the road to Oakzanita Peak, East Mesa on Dyer Spring Fire Road, Azalea Creek 0.25 mile northeast of Engineers Road; as well as at Inspiration Point along Highway 79 2.8 miles south of Julian, in Julian, at Bunton Flat 0.33 mile south southwest of the intersection of Boulder Creek and Eagle Creek Roads, west of Engineers Road and north of Penstemon Road in the Cuyamaca Mountains, and near Stonewall Peak.

Status: San Diego Gumplant populations are relatively stable. Development around Cuyamaca Lake or expanded recreational uses in the area could impact this species over the long term. Substantial portions of sizeable populations should be protected.

Copyright May 1994 Craig H. Reiser.

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