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Morphological Structure

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Phytophthora foliorum

Phytophthora foliorum (ex-type CPHST BL 168) homothallic sexual phase: smooth-walled oogonium with paragynous antheridium and plerotic oospore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora foliorum

Phytophthora foliorum (ex-type CPHST BL 168) homothallic sexual phase: smooth-walled oogonia with paragynous antheridia and plerotic oospores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora foliorum

Phytophthora foliorum (ex-type CPHST BL 168) homothallic sexual phase: oospores and hyphal swellings; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora foliorum

Phytophthora foliorum (ex-type CPHST BL 168) homothallic sexual phase: smooth-walled oogonia with paragynous antheridia and plerotic oospores; photo by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora foliorum

Phytophthora foliorum (ex-type CPHST BL 168) homothallic sexual phase: oogonia with tapered bases and small paragynous antheridia; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora foliorum

Phytophthora foliorum (ex-type CPHST BL 168) homothallic sexual phase: oogonia with tapered bases and small paragynous antheridia; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora foliorum

Phytophthora foliorum (ex-type CPHST BL 168) homothallic sexual phase: oogonia with tapered bases and small paragynous antheridia, and hyphal swellings; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora foliorum
Phytophthora spp. in subclade 8c: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. foliorum Ex-type CBS 121655 = S&T BL 168. Gloria Abad, USDA S&T.

Phytophthora foliorum
Phytophthora spp. in subclade 8c: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. foliorum Ex-type CBS 121655 = S&T BL 168. Gloria Abad, USDA S&T.
Phytophthora formosa
Phytophthora spp. in subclade 7a: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. formosa Ex-type CBS 141203 = S&T BL 212. Gloria Abad, USDA S&T.
Phytophthora formosa
Phytophthora spp. in subclade 7a: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. formosa Ex-type CBS 141203 = S&T BL 212. Gloria Abad, USDA S&T.
Phytophthora fragariae (in progress - Abad et al. 2023b)
Phytophthora spp. in subclade 7a: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. fragariae selected specimen CBS 309.62 = S&T BL 213. Gloria Abad, USDA S&T.

Phytophthora fragariae (in progress - Abad et al. 2023b)
Phytophthora spp. in subclade 7a: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. fragariae selected specimen CBS 309.62 = S&T BL 213. Gloria Abad, USDA S&T.
Phytophthora fragariae (in progress - Abad et al. 2023b)
Phytophthora fragariae (P10752) asexual phase: (a–d) sporangia nonpapillate, persistent with internal proliferation (c and d); photos by Vickie Brewster, USDA-APHIS-PPQ.
Phytophthora fragariae (in progress - Abad et al. 2023b)

Phytophthora fragariae (P10752) asexual phase: sporangium nonpapillate, persistent with internal proliferation; photo by Vickie Brewster, USDA-APHIS-PPQ.

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

Phytophthora fragariae (P10752) asexual phase: sporangium nonpapillate, persistent with internal proliferation; photo by Vickie Brewster, USDA-APHIS-PPQ.


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

Phytophthora fragariae (P10752) asexual phase: persistent nonpapillate sporangia with internal proliferation; photo by Vickie Brewster, USDA-APHIS-PPQ.

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

Phytophthora fragariae (P10752) asexual phase: persistent nonpapillate sporangia with internal proliferation; photo by Vickie Brewster, USDA-APHIS-PPQ.

Phytophthora fragariaefolia

Phytophthora fragariaefolia (CPHST BL 141) 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 fragariaefolia

Phytophthora fragariaefolia (ex-type CH05NSU11) asexual phase: (a–e) nonpapillated persistent sporangia, (c, d) with internal and (e) external proliferation; (f, g) spherical and subspherical hyphal swellings; (h) spherical intercalary chlamydospore; photos by Mohamed Rahman and Koji Kageyama, Gifu University, Japan


Phytophthora fragariaefolia

Phytophthora fragariaefolia (ex-type CH05NSU11) sexual phase: (a–d) smooth-walled oogonia with aplerotic oospores; (b) with paragynous antheridium and funnel-shaped oogonium; (c) amphigynous antheridium with finger-like projection; (d) amphigynous and paragynous antheridia; (e) distorted oogonium; photos by Mohamed Rahman and Koji Kageyama, Gifu University, Japan

Phytophthora fragariaefolia

Phytophthora fragariaefolia (ex-type CPHST BL 141) asexual phase with nonpapillated persistent sporangia originated in unbranched sporangiophore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora fragariaefolia

Phytophthora fragariaefolia (ex-type CH05NSU11) asexual phase: spherical hyphal swellings; photo by Mohamed Rahman and Koji Kageyama, Gifu University, Japan.

Phytophthora fragariaefolia

Phytophthora fragariaefolia (ex-type CH05NSU11) asexual phase: subspherical hyphal swelling; photo by Mohamed Rahman and Koji Kageyama, Gifu University, Japan.


Phytophthora fragariaefolia

Phytophthora fragariaefolia (ex-type CH05NSU11) asexual phase: spherical intercalary chlamydospore; photo by Mohamed Rahman and Koji Kageyama, Gifu University, Japan.

Phytophthora fragariaefolia
Phytophthora spp. in subclade 7d: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. fragariaefolia Ex-type CBS 135747 = S&T BL 141. Gloria Abad, USDA S&T.
Phytophthora fragariaefolia
Phytophthora spp. in subclade 7d: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. fragariaefolia Ex-type CBS 135747 = S&T BL 141. Gloria Abad, USDA S&T.
Phytophthora frigida
Phytophthora spp. in Clade 2e: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. frigida Ex-type CBS 121941 = S&T BL 39G. Gloria Abad, USDA S&T.

Phytophthora frigida
Phytophthora spp. in Clade 2e: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. frigida Ex-type CBS 121941 = S&T BL 39G. Gloria Abad, USDA S&T. 
Phytophthora frigida

Phytophthora frigida (CPHST BL 39G) colonies of the ex-type on (a) V8® Agar (V8A), (b) potato dextrose agar (PDA), and (c) malt extract agar (MEA), V8A grown for 11 days, PDA and MEA grown for 7 days; photo by Krysta Jennings and Leandra Knight, USDA-APHIS-PPQ

Phytophthora gallica

Phytophthora gallica (CPHST BL 35) 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 gallica

Phytophthora gallica (CPHST BL 35) asexual phase of the ex-type producing chlamydospores and hyphal swellings, and (d) nonpapillate persistent sporangium; photos by Gloria Abad USDA-APHIS-PPQ.