850 AQUATIC PHYCOMYCETES 



GEOLEGNIA Coker 



Harvey, Elisha Mitchell Sci. Soc, 41 : 153. 1925 



(Fig. 65 V, p. 836) 



"Mycelium of very limited growth, forming a dense, opaque mat; 

 hyphae slender. Spores in a single row, very large, and multinucleate, 

 encysting within the sporangium with a thick wall and without any 

 motile stage, escaping by decay of the thin-walled sporangium and 

 sprouting by a germ-tube. Oogonia abundant, even, containing a single 

 eccentric egg not filling the cavity. Antheridia always present and 

 androgynous" (Coker and Matthews, 1937). 



Type species : Geolegnia inflata Coker and Harvey. 



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



Geolegnia intermedia Hohnk 

 Veroff. Inst. Meeresforsch. Bremerhaven, 1: 81, pi. 14. 1952 



IMPERFECTLY KNOWN GENERA OF THE SAPROLEGNIACEAE 



? HAMIDIA Chaudhuri 



Proc. Indian Acad. Sci., Sect. B, 15: 227. 1942 



"Hyphae hyaline, generally racemosely branched, delicate, sparsely 

 septate, bearing oogonia and sporangia both in racemose and cymose 

 manner; best seen in natural condition. Oogonia borne singly or in 

 clusters (of usually 3). Oogonia when borne singly have long stalks 

 which break at the slightest disturbance. Oogonium with a single large 

 egg entirely filling it. Egg with smooth wall; emerges gradually and 

 imperceptibly. Apandrous; sporangia resembling oogonia also formed, 

 each with 2-7 swarm spores. Discharge tube may or may not be present. 

 Swarm spores, without a properly differentiated wall and non-ciliate 

 (monoplanetic) germinate soon after discharge. Undischarged swarm 

 spores germinate inside the sporangium, putting forth unilaterally or 

 bilaterally produced germ tubes. Gemmae also formed. Growth on 

 fresh potato stalks most luxuriant; egg yolks and insects unsuitable for 

 growth" (Chaudhuri, loc. cit.). 



