SAPROLEGNIALES 835 



Encysted spores for most part more than 1 5 \i in diameter, in a 

 single row, wall thick, never giving rise to motile zoo- 

 spores Geolegnia, p. 850 



PYTHIOPSIS de Bary 



Bot. Zeitung, 46:609. 1888 



(Fig. 65 C, p. 836) 



Hyphae slender, branched; sporangia typically short and plump, 

 spheric, oval, pyriform with a distinct apical papilla, or varying to 

 elongate and irregular, the primary ones terminal, the secondary ones 

 multiplied from lateral stalks below the old ones to form more or less 

 dense clusters; spores emerging and swimming as in Saprolegnia, pip- 

 shaped with two apical cilia, sprouting after the first encystment 

 (monoplanetic) ; gemmae resembling the sporangia, formed plentifully, 

 often in chains, producing zoospores after a rest; oogonia borne like 

 the sporangia and gemmae and resembling them in youth, typically 

 spheric, oval, or pyriform, with unpitted, smooth, wavy, or papillate 

 walls; eggs one or few, eccentric; antheridia short and thick, typically 

 androgynous from the close neighborhood of the oogonia, rarely 

 diclinous. (Modified from Coker and Matthews, 1937.) 



Type species: Pythiopsis cymosa de Bary. 



TAXA NOT IN COKER (1923) OR COKER AND MATTHEWS (1937) 



Pythiopsis intermedia Chaudhuri and Banerjee 

 Proc. Indian Acad. Sci., Sect. B, 15: 221, pi. 2. 1942 



Pythiopsis papillata Ookubo and Kobayasi 



Nagaoa, 5: 8, fig. 6. 1955 



SAPROLEGNIA C. G. Nees 



Nova Acta Acad. Leop. -Carol., 11: 513. 1823 

 (Fig. 65 D-E, p. 836) 

 Diplanes Leitgeb, Jahrb. Wiss. Bot., 7: 374. 1869. 



"Saprophytic on animal or plant remains, or in some species parasitic 

 on aquatic animals as fish, frog-eggs, etc. ; exposed hyphae branched 



