Phytophthora tubulina (CBS 141212 — ex-type), structures formed on V8 agar flooded with soil extract. A–L, N–S. Sporangia. A. Papillate ovoid. B. Papillate obpyriform with laterally attached sporangiophore, on a short lateral hypha. C. Papillate mouse-shaped with curved apex. D. Papillate subglobose. E. Papillate distorted with laterally attached sporangiophore. F–G. Papillate obpyriform with beak-like, curved (G) apex. H. Bipapillate. I. Tripapillate. J. Semipapillate, elongated ovoid. K. Nonpapillate ovoid with hyphal extension. L. Nonpapillate intercalary. M. Subglobose catenulate hyphal swellings. N. Papillate, ovoid intercalary sporangium and papillate subglobose sporangium. O. Nonpapillate ovoid sporangium with short hyphal extension (arrow head), shedding (arrow) from short lateral hypha. P. Subglobose to ovoid, papillate sporangium with constriction of sporangiophore. Q. Bipapillate detached sporangium. R. Direct germination of papillate ovoid sporangium. S. Empty obpyriform sporangium after release of zoospores, with beak-like apex, narrow exitpore and conspicuous basal plug. T. Branching of sporangiophore into multiple sporangiophores. U. Globose to subglobose hyphal swellings with radiating hyphae. Bar A–T = 25 µm, U = 40 µm.