Moreno Current [Ribes canthariforme Wiggins]

Moreno Current [Ribes canthariforme Wiggins]

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

State/Federal. Status -- /C2 GROSSULARIACEAE Feb.-Apr.

Global Rank G2 State Rank S2.2

Distribution: San Diego County

Habitat: Chaparral in areas of Acid Igneous rock land, typically with massive, exposed boulders, is the typical habitat of this shrub. Water availability may be higher in the shadows of these boulders, even during the dry season, and in part help define the microhabitat requirements of the Moreno Current.

Known Sites: Ribes grows in rocks near the dam at Lake Moreno. Herbarium specimens are from the summit of Lawson and Gaskill Peak, Lyon's Peak, Featherstone Creek near Barona, El Cajon Mountain, and Descanso Junction. These locales are all remote, lightly investigated areas. As yet, few extensive, sizeable populations are known. Old biological survey reports note sites on the slopes immediately south of Hidden Glen, west of the intersection of Kimball Grade and Skyline Drive, on the west slope of Gaskill Peak, and the north slope of Lawson Peak. This species has not yet been collected in Baja California. Data Base reports are for 0.75 mile southwest of Sequan Peak, west of Sequan Peak, and 0.75 mile north of Sequan Peak.

Status: Moreno Current populations in San Diego County are presently stable. This is one of the rarer shrubs in the County. It is a very distinctive, little-known endemic whose reported sites are generally remote from existing development. All populations should be protected.

Copyright May 1994 Craig H. Reiser.

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