The California Natural Diversity Database (CNDDB), maintained by the California Department of Fish and Game, lists 5 occurrences for this variety. However at two of these locations, in or near Edgewood County Park, plants have not been observed for several years, and these populations are presumed extinct. One colony of "C. f." var. "fontanale" was found in the 1980s on serpentine soil along the east side of Upper Crystal Springs Reservoir. A new population was found along a creek in Redwood City within Stulsaft Park in the 2000s. Another population was found in the Town of Woodside, growing on PG&E land on the east side of I-280 between Woodside Road and Farm Hill Blvd. along a perennial stream, while conducting a vegetation survey to replacing their L-109 gas pipeline. Historically this variety occurred in a broader range throughout San Mateo and Santa Clara Counties.