Extensive morphological and behavioural diversity among fourteen new and seven described species in Phytophthora Clade 10 and its evolutionary implications

. 2022 Aug 13;49:1–57. doi: 10.3767/persoonia.2022.49.01

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Fig. 12 — Morphological structures of *Phytophthora chilensis*. a–k. Sporangia with short pedicels formed on V8 agar (V8A) flooded with soil extract; a–j. papillate sporangia; a. ovoid terminal; b–d. ovoid terminal with external proliferation; e. ovoid, lateral-sessile with conspicuous basal plug protruding into the sporangiophore; f. dense sympodium of three sporangia; g. slightly obpyriform, lateral-sessile sporangium with small ovoid hyphal swelling beside it and ovoid caducous sporangium with conspicuous basal plug (arrow), after release of most zoospores; h. elongated-ovoid caducous sporangium; i. ovoid caducous sporangia. j. ovoid caducous sporangium, differentiating zoospores; k. same sporangium as in j, releasing zoospores; l–u. mature smooth-walled oogonia formed in single culture in solid V8A, with oospores, containing large ooplasts, and amphigynous antheridia; j–t. globose oogonia with plerotic oospores; l. non-tapering base, bicellular antheridium; m–n. non-tapering bases, unicellular antheridia; o–s. tapering funnel-like bases, unicellular antheridia; t. slightly comma-shaped, tapering base and bicellular antheridium; u. excentric slightly comma-shaped oogonium with tapering base, aplerotic oospore and bicellular antheridium (left), and globose oogonium with tapering base, plerotic oospore and unicellular antheridium (right); v. dense compact hyphal aggregation in solid V8A. — Scale bar = 20 μm, applies to a–v.

Fig. 12.