678 AQUATIC PHYCOMYCETES 



There is but little doubt that their species were identical. Neither ob- 

 served sexuality in his fungus. This phase was first established by Mc- 

 Cranie (1942) and confirmed by Teter (1944). 



Emerson's varieties are not maintained as distinct. 



Group Brachyallomyces 



With asexual phase only; resting spore persistent or deciduous, upon 

 germination producing planonts which give rise to asexual plants. 



Allomyces anomalus Emerson 



Lloydia, 4: 133. 1941 

 (Fig. 40 D-E, p. 616) 



"Characters of the subgenus [Brachyallomyces]. (A problematical sub- 

 genus and species tentatively established to include those few isolates in 

 which repeated attempts to obtain sexual plants have been unsuccessful)" 

 (Emerson, loc. cit.). 



United States; Mexico; India; Cuba. 



Wilson's (1952) cytological studies show (see p. 627) that in Allomyces 

 the omission of a sexual phase is the result of mitotic (and not meiotic) 

 divisions occurring at germination of the resting spore. 



REJECTED SPECIES OF ALLOMYCES 



* Allomyces monspeliensis Arnaud 

 Bull. Soc. Mycol. de France, 68: 184, fig. 1 E-H. 1952 



On eggs of batrachian, France. 



Too little information is given to define this species. From the beaked 

 appearance of the resting spore, as shown in Arnaud's illustration (Fig. 

 1 F), affinity with one of the Cystogenes group is indicated. 



BLASTOCLADIA Reinsch 



Jahrb. wiss. Bot., 11: 298. 1878 

 (Figs. 46, p. 680; 47 A-F p. 682) 



Thallus consisting of a cylindrical more or less elongate trunk-like basal 

 cell which is either expanded at its apex or gives rise to broad distally 



