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Morphological Structure

Clades


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Phytophthora quercina

Phytophthora quercina (ex-type CPHST BL 110) typical elongated oogonium with aplerotic golden yellow oospore and paragynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora quercina

Phytophthora quercina (ex-type CPHST BL 110) typical elongated oogonium with aplerotic golden yellow oospore and paragynous antheridium; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora quercina

Phytophthora quercina (ex-type CPHST BL 110) sexual phase: smooth-walled oogonium with aplerotic golden yellow oospore and abundant mycelia close to the gametangia; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora quercina

Phytophthora quercina (ex-type CPHST BL 110) sexual phase: smooth-walled oogonium with aplerotic golden yellow oospore, with paragynous antheridium and abundant mycelia close to the gametangia; photo by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora quercina

Phytophthora quercina (ex-type CPHST BL 110) sexual phase: smooth-walled oogonium with aplerotic golden yellow oospore and abundant mycelia close to the gametangia; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora quercina

Phytophthora quercina (ex-type CPHST BL 110) sexual phase: smooth-walled oogonium with aplerotic golden yellow oospore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora quininea
Phytophthora spp. in subclade 9c: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. quininea Ex-type CBS 407.48 = S&T BL 54G. Gloria Abad, USDA S&T.
Phytophthora quininea
Phytophthora spp. in subclade 9c: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. quininea Ex-type CBS 407.48 = S&T BL 54G. Gloria Abad, USDA S&T.

Phytophthora quininea

Phytophthora quininea (CPHST BL 54G) 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 ramorum
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. ramorum Ex-type CBS 101533 = S&T BL 55G. Gloria Abad, USDA S&T.
Phytophthora ramorum
Phytophthora spp. in subclade 8c: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. ramorum Ex-type CBS 101533 = S&T BL 55G. Gloria Abad, USDA S&T.
Phytophthora ramorum

Phytophthora ramorum (CPHST BL 55G) 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 ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) asexual phase (a–h): (a) sporangia in sporangiophores, (b–d) semipapillated sporangia with short pedicels; (e–h) chlamydospores, (f) terminal, (g, h) intercalary and lateral; photos by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) sexual phase (a–e): (a) sporangium and sexual phase, (b–e) gametangia and plerotic oospores of ex-type (A1, EU1) produced with tester strain P. capsici (A2, ex-type CPHST BL 33); photos by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum mycelia and sporangiophore; photo by Gloria Abad, USDA-APHIS-PPQ

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) asexual phase: sporangia and sporangiophores; photo by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) asexual phase: chlamydospores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) asexual phase: semipapillated sporangium with short pedicel; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) asexual phase: semipapillated sporangium with short pedicel; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) sexual phase: plerotic oospore of ex-type (A1, EU1) produced with tester strain P. capsici (A2, ex-type CPHST BL 33); photo by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) asexual phase: intercalary and lateral chlamydospores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) sexual phase: plerotic oospore of ex-type (A1, EU1) produced with tester strain P. capsici (A2, ex-type CPHST BL 33); photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) asexual phase: terminal chlamydospore; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) sexual phase: plerotic oospore of ex-type (A1, EU1) produced with tester strain P. capsici (A2, ex-type CPHST BL 33); photo by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) asexual phase: intercalary and lateral chlamydospores; photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) sexual phase: plerotic oospore of ex-type (A1, EU1) produced with tester strain P. capsici (A2, ex-type CPHST BL 33); photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) asexual and sexual phases: sporangium and plerotic oospore of ex-type (A1, EU1) produced with tester strain P. capsici (A2, ex-type CPHST BL 33); photo by Gloria Abad, USDA-APHIS-PPQ.

Phytophthora ramorum

Phytophthora ramorum (ex-type CPHST BL 55G) asexual phase: semipapillated sporangium with short pedicel; photo by Gloria Abad, USDA-APHIS-PPQ.


Phytophthora rhizophorae
Phytophthora spp. in subclade 9a: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. rhizophorae Ex-type CCIBt 4152. Gloria Abad, USDA S&T.
Phytophthora rhizophorae
Phytophthora spp. in subclade 9a: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. rhizophorae Ex-type CCIBt 4152. Gloria Abad, USDA S&T.
Phytophthora richardiae (to be updated 2022)
Phytophthora spp. in subclade 9c: portion of the seven-loci ML phylogeny featuring the type cultures of 212 described species (by T. Bourret). Notice the position of P. richardiae selected specimen CBS 149410 = S&T BL 76. Gloria Abad, USDA S&T.
Phytophthora richardiae (to be updated 2022)
Phytophthora spp. in subclade 9c: Morphological Tabular key (PDF) and Tabular key legends (PDF) in IDphy2 KEY SECTION. Notice the data of P. richardiae selected specimen CBS 149410 = S&T BL 76. Gloria Abad, USDA S&T.