Figure 6: Morphology of gametangia of Phytophthora mississippiae: A, B) Selfing gametangia induced by P. cryptogea; A) An oogonium with an ornamented surface and a tapered base, a bi-celled, amphigynous antheridium, and two immature gametangia; B) An oogonium with ornamented surface and tapered base; C, D) Selfing gametangia induced by P. nicotianae; C) A plerotic oospore with a cylindroid, amphigynous antheridium; D) Three different sized oogonia. Bars=10 µm.