Phytophthora cinnamomi

Phytophthora cinnamomi asexual phase: typical coralloid mycelia and botryose hyphal swellings; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora citricola

Phytophthora citricola (CPHST BL 34) colonies of the ex-type grown for 7 days on (a) V8® Agar, (b) potato dextrose agar, and (c) malt extract agar; photo by Clinton Greub, Krysta Jennings, and Leandra Knight, USDA-APHIS-PPQ

Phytophthora citricola

Phytophthora citricola (CPHST BL 34) sexual phase formed on hemp seed agar plus Udo's oil (a-c): (a, b) smooth-walled oogonia with tapered bases and paragynous antheridia and plerotic oospores, (c) smooth-walled oogonium with paragynous antheridium and plerotic oospore; photos by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora citricola

Phytophthora citricola (CPHST BL 34) asexual phase formed on V8 agar flooded with soil extract (a-c): (a) sporangia originated in simple sporangiophores and oospores, (b) semipapillate ovoid persistent sporangium and oospore, (c) semipapillate persistent ovoid sporangia and oospores; photos by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora citricola

Phytophthora citricola (CPHST BL 34) asexual phase formed on V8 agar flooded with soil extract: sporangia originated in simple sporangiophores and oospores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora citricola

Phytophthora citricola (CPHST BL 34) asexual phase formed on V8 agar flooded with soil extract: semipapillate ovoid persistent sporangium and oospore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora citricola

Phytophthora citricola (CPHST BL 34) asexual phase formed on V8 agar flooded with soil extract: semipapillate persistent ovoid sporangia and oospores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora citricola

Phytophthora citricola (CPHST BL 34) sexual phase formed on hemp seed agar plus Udo's oil: smooth-walled oogonium with tapered base and paragynous antheridium and plerotic oospore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora citricola

Phytophthora citricola (CPHST BL 34) sexual phase formed on hemp seed agar plus Udo's oil: smooth-walled oogonium with paragynous antheridium and plerotic oospore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora citricola

Phytophthora citricola (CPHST BL 34) sexual phase formed on hemp seed agar plus Udo's oil: smooth-walled oogonium with tapered base and paragynous antheridium and plerotic oospore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora citricola
Phytophthora spp. in subclade 2c: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. citricola Ex-type CBS 221.88 = S&T BL 34. Gloria Abad, USDA S&T.

Phytophthora citricola
Phytophthora spp. in subclade 2c: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. citricola Ex-type CBS 221.88 = S&T BL 34. Gloria Abad, USDA S&T. 

Phytophthora citrophthora (in progress - Abad et al. 2023b)
Phytophthora spp. in subclade 2a: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. citrophthora selected specimen CBS 950.87 = S&T BL 60. Gloria Abad, USDA S&T.

Phytophthora citrophthora (in progress - Abad et al. 2023b)
Phytophthora spp. in subclade 2a: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. citrophthora selected specimen CBS 950.87 = S&T BL 60. Gloria Abad, USDA S&T.

Phytophthora citrophthora (in progress - Abad et al. 2023b)

Phytophthora citrophthora (CPHST BL 60) colonies of the ex-type grown for 7 days on (a) V8® agar (b) potato dextrose agar (c) malt extract agar; photos by Krysta Jennings and Leandra Knight, USDA-APHIS-PPQ

Phytophthora citrophthora (in progress - Abad et al. 2023b)

Phytophthora citrophthora (ex-type CPHST BL 60) asexual phase formed on V8 agar flooded with soil extract: (a) semipapillate persistent sporangia originated in irregular branched and simple sympodial sporangiophores, (b) semipapillate persistent sporangia and globose chlamydospores (marked with red arrows); photos by Gloria Abad, USDA-APHIS-PPQ

Phytophthora citrophthora (in progress - Abad et al. 2023b)

Phytophthora citrophthora (selected specimen P31) asexual phase: (a-c) semipapillate persistent sporangia; photos by Gloria Abad, USDA-APHIS-PPQ

Phytophthora clandestina
Phytophthora spp. in subclade 1b: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. clandestina Ex-type CBS 347.86 = S&T BL 15. Gloria Abad, USDA S&T.

Phytophthora clandestina
Phytophthora spp. in subclade 1b: Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. clandestina Ex-type CBS 347.86 = S&T BL 15. Gloria Abad, USDA S&T.

Phytophthora cocois
Phytophthora spp. in Clade 5: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. cocois Ex-type CBS 149822 = S&T BL 157. Gloria Abad, USDA S&T.

Phytophthora cocois
Phytophthora spp. in Clade 5: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. cocois Ex-type CBS 149822 = S&T BL 157. Gloria Abad, USDA S&T.

Phytophthora cocois

Phytophthora cocois (CPHST BL 157) colonies of the ex-type grown for 7 days on (a) V8® Agar, (b) potato dextrose agar, and (c) malt extract agar; photo by Krysta Jennings and Leandra Knight, USDA-APHIS-PPQ

Phytophthora cocois

Phytophthora cocois (ex-type CPHST BL 157) sexual phase (a–g): (a–g) oogonia with amphigynous antheridia and plerotic oospores, (b–g) with tapered bases, (f, g) oogonia with typical moderately bullate protuberances; photos by Gloria Abad, USDA-APHIS-PPQ

Phytophthora colocasiae (in progress - Abad et al. 2023b)

Phytophthora colocasiae colony of selected specimen CPHST BL 35G grown for 7 days on (a) V8 agar, (b) potato dextrose agar, (c) malt extract agar; photos by Krysta Jennings and Leandra Knight, USDA-APHIS-PPQ

Phytophthora colocasiae (in progress - Abad et al. 2023b)

Phytophthora colocasiae selected specimen CPHST BL 35G, asexual phase: (a) sporangia in sporangiophores, (b-f) semipapillate sporangia with short and medium length pedicels, (g) hyphal swellings; photos by G. Abad, USDA-APHIS-PPQ

Phytophthora colocasiae (in progress - Abad et al. 2023b)

Phytophthora colocasiae selected specimen CPHST BL 35G, sexual phase produced in single culture: (a, b, c) smooth-walled oogonia with amphyginous antheridia and aplerotic oospores; photos by G. Abad, USDA-APHIS-PPQ

Phytophthora colocasiae (in progress - Abad et al. 2023b)
Phytophthora spp. in subclade 2a: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. colocasiae selected specimen CBS 149404 = S&T BL 173. Gloria Abad, USDA S&T.

Phytophthora colocasiae (in progress - Abad et al. 2023b)
Phytophthora spp. in subclade 2a: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. colocasiae selected specimen CBS 149404 = S&T BL 173. Gloria Abad, USDA S&T.

Phytophthora condilina
Phytophthora spp. in subclade 6a: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. condilina Ex-type CBS 143059 = S&T BL 184. Gloria Abad, USDA S&T.

Phytophthora condilina
Phytophthora spp. in subclade 6a: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. condilina Ex-type CBS 143059 = S&T BL 184. Gloria Abad, USDA S&T. 

Phytophthora condilina

colony morphology after 5 d growth at 20ºC on carrot agar, V8 agar, malt extract agar, and potato-dextrose agar (from left to right)

Phytophthora condilina

persistent, nonpapillate, predominantly ovoid sporangia with both nested and extended internal proliferation; scale bar = 25µm