TABLE 1.  Isolates of Phytophthora spp. used in this investigation.

Phytophthora boehmeriae                II                             325^PT, P1257^MC                                                      Boehmeriae nivia                                Papua New Guinea

Phytophthora cactorum                     I                               SB2079^GB                                                               Fragaria x ananassa                          California

Phytophthora capsici                         II                             Cp-25^DJM  (A-2)                                                     Citrullus lantatus                                Florida

Phytophthora cinnamomi                  VI                            Cn-2^DJM  (A-2 mating type)                                 Vaccinium spp.                                    Florida

Phytophthora citricola                      III                            SB2078^GB                                                               Fragaria x ananassa                           California

Phytophthora citrophthora              II                             Ct-1^DJM                                                                   Theobroma cacao                               Brazil

Phytophthora clandestine                 I                               IMI287317^DC                                                          Trifolium subterranean                      Australia

Phytophthora colocasiae                  IV                            346^PT, P3773^MC                                                      Colocasia esculenta                           Indonesia

Phytophthora cryptogea                   VI                            IMI 045168                                                            Lycopersicon esculentum                     New Zealand

Phytophthora drechsleri                   VI                            ATCC 46724 (Type)                                             Beta vulgaris                                          U.S.A.

Phytophthora erythroseptica           VI                            367^PT                                                                       Solanum tuberosum                              New York

Phytophthora fragariae fragariae V                               395^PT, ATCC 13974                                              Fragaria x ananassa                            New York

Phytophthora gonapodyides            VI                            393^PT, NY353^WW                                                    Malus sylvestris                                   New York

                                                                                                P245^DC, IMI389725                                               Salix mastsudana                                  U.K.

                                                                                                P501^DC, IMI389729                                               Ilex roots                                                 U.K.

Phytophthora heveae                         II                             Hv-2^DJM                                                                  Theobroma cacao                                 Brazil

Phytophthora hibernalis                   IV                            337^PT, ATCC 32995, P0647^MC                                     Citrus sinensus                              California

Phytophthora humicola                     V                             IMI302303^DC                                                          soil from citrus                                        Taiwan

Phytophthora idaei                            I                               IDA3^DC (Type)                                                      Rubus idaeus                                          Scotland

Phytophthora ilicis                             IV                            343^PT, P6100^MC, 802^PH                                           Ilex aquifolium                                     Oregon

Phytophthora inflata                          III                            IMI342898^DC                                                          Syringa sp.

Phytophthora infestans                      IV                            127^PT, ATCC 48723                                              Solanum tuberosum                              New York

Phytophthora iranica                        I                               IMI158964^DC                                                          Solanum melongera                              Iran

Phytophthora katsurae                      II                             IMI360596^DC                                                          Cocos nucifera                                       Ivory Coast

Phytophthora lateralis                      V                             IMI 040503 (Type)                                               Chamaecyparis                                        U.S.A.   

Phytophthora medii                            II                             IMI129185^DC                                                          Hevea brasiliensis                                 India

Phytophthora megasperma               V                             IMI133317                                                             Malus sylvestris                                       Australia

Phytophthora megakarya                II                             328^PT, P184^CB                                                         Theobroma cacao                                 Cameroon

Phytophthora melonis                        VI                            IMI325917^DC                                                          Cucumis sp.                                           China

Phytophthora mirabilis                     IV                            340^PT, ATCC 64070, P3007^MC                              Mirabilis jalapa                                   Mexico

Phytophthora nemorosa                    IV                            P-13^EH, 482^PT Type                                               Lithocarpus densiflorus                      California                              

                                                                                                2052.1^EH, 483^PT                                                      Lithocarpus densiflorus                      Oregon                                  

Phytophthora nicotianae                  II                             331^PT                                                                       Nicotiana tabacum                               North Carolina

Phytophthora palmivora                   II                             Pl-5^DJM, P626^UCR                                                    Theobroma cacao                                Brazil

Phytophthora phaseoli                      V                             352^PT, ATCC 60171, CBS 556.88                         Phaseolus lunatus                                 unknown                                                                                                                                                               373^PT,                                                                      Phaseolus lunatus                                Delaware

                                                                                                403^PT                                                                       Phaseolus lunatus                                Delaware

                                                                                                406^PT (Race D)                                                      Phaseolus lunatus                                 Maryland

Phytophthora porri                            III                            CBS782.97^DC                                                          Brassica chinensis                                The Netherlands

Phytophthora primulae                     III                            CBS620.97^DC                                                          Primula acaulis                                     Germany

Phytophthora pseudosyringae         IV                            PSEU16^TJ, 484^PT, NFV-BU97-15                          Fagus sylvatica                                    Germany                               

                                                                                                P96^EH, 485^PT                                                           Umbellularia californica                    Contra Costa Co., CA

470^PT, P193907A^CDFA                                            Manzanita sp.                                       Royal Oaks, CA

                                                                                                471^PT, 1168699^CDFA                                                Umbellularia californica                   Napa, CA

                                                                                                472^PT, 1168676^CDFA                                                Umbellularia californica                   Calistoga, CA

                                                                                                473^PT, P110361^CDFA                                               Umbellularia californica                   Yountville, CA

Phytophthora pseudotsugae             I                               308^PT, H270^PH                                                        Pseudotsugae menziesii                      Oregon

Phytophthora quercina                     V                             IMI340618^DC                                                          Quercus robur                                        Germany

Phytophthora ramorum                     IV                            Prn-1, PD93/844^sw                                                  Rhododendron sp.                               Netherlands

Prn-2, PD94/844^sw                                                 Rhododendron sp.                               Netherlands

Prn-3, PD98/8/6743^sw                                            Rhododendron sp.                               Netherlands

Prn-4, PD98/8/6285^sw                                            Rhododendron sp.                               Netherlands

Prn-5, PD98/8/2627^sw                                            Rhododendronsp.                               Netherlands

Prn-6, PD98/8/5233^sw                                            Viburnum sp.                                        Netherlands

Prg-1, BBA 69082^sw                                              Rhododendron sp.                               Germany

Prg-2, BBA 9/95^sw, CBS101553 (Type)              Rhododendron catawbiense              Germany

Prg-3, BBA 14/98-a^sw                                           Rhododendron catawbiense               Germany

Prg-4, BBA 12/98^sw                                               Rhododendron catawbiense             Germany

Prg-5, BBA 13/99-1^sw                                           Rhododendron catawbiense             Germany

Prg-6, BBA 16/99^sw                                               Viburnum bodnantense                      Germany

Prg-7, BBA 9/3^sw                                                   water                                                      Germany

Prg-8. BBA 104^sw                                                  water                                                      Germany

288^MG                                                                      Rhododendron sp.                              California

73101^CDFA                                                               Lithocarpus densiflorus                     California

044519^CDFA                                                             Umbellularia californica                   California

044522^CDFA                                                             Lithocarpus densiflorus                     California

P072648 ^CDFA                                                          Quercus agrifolia                               California

201C^DR                                                                    Rhododendron sp.                              California

0217^DR                                                                    Rhododendron sp.                              California

Coen^MG                                                                  Rhododendron sp.                              California

013^DR                                                                      Lithocarpus densiflorus                     California

016^DR                                                                      Quercus agrifolia                                California

Phytophthora richardiae                  VI                            ATCC46538^DC                                                       Zantedeschia sp. root                         The Netherlands

Phytophthora sojae                            V                             312^PT, ATCC 48068                                              Glycine max                                          Wisconsin

Phytophthora syringae                      III                            IMI 296829                                                            Rubus idaeus                                        Scotland

Phytophthora tentaculata                 I                               CBS552.96^DC                                                          Chrysanthemum leucanth.                 Germany

Phytophthora sp. "O" group^c                                            P246^DC, IMI389751                                               Salix roots                                            U.K.

P. taxon Pgchlamydo^c                                                          P510^DC, IMI389731                                               Pseudotsugae roots                            Canada

P. taxon Raspberry^c                                                             P896^DC, IMI389744                                               soil                                                          Tasmania

^a Waterhouse morphological group (Waterhouse 1963)

^b CB = Clive Brasier, DC= DNA supplied by David Cooke, MC=Michael Coffey,GB= Greg Brown, KD = Ken Deahl, PH = Phil Hamm (E. Hansen), DJM=Dave Mitchell, DS=Dave Shaw, PT=Paul Tooley, UCR = University of California at Riverside, SW= Sabine Werres, WW=Wayne Wilcox, DR= Dave Rizzo, CDFA=Cheryl Blomquist, California Dept. of Food and Agriculture.

 ^c Species groupings of Brasier et al. (5)