Catalogue of Nonnative Vascular Plants Occurring Spontaneously in California Beyond Those Addressed in the Jepson Manual – Part II

Abstract

ABSTRACT We present Part II of a catalogue documenting nonnative vascular plant taxa occurring spontaneously in California beyond those addressed in The Jepson Manual: Higher Plants of California (Hickman 1993). Here we document an additional 117 taxa occurring spontaneously in California that were not accounted for in Part I (Hrusa et al. 2002) or in The Jepson Manual. The catalogue was compiled from new collections by the authors and others, previously existing herbarium specimens, peer-reviewed publications, other printed reports, and direct communications with field botanists. Only reports backed by herbarium vouchers are accepted as adequately documented. Of the 117 taxa, 42 are fully or sparingly naturalized in relatively undisturbed wildland habitats, 14 are naturalized in non-wildlands (roadsides, fallow fields, croplands, other disturbed areas), 13 are tenuously established or locally persisting, 22 are weeds of greenhouse or other horticultural environments, 7 are presumed to be non-persisting c...