BLASTOCLADIALES 675 



Allomyces javanicus var. allomorphus Indoh 



Nagaoa, 2: 28, figs. 1-4. 1952 



"Mycelium [in] white tuft[s], reaching about 7.8 mm. in length, 

 attached by rhizoids to substrata. Hyphae with pseudosepta 25-34 (jl, 

 sometimes up to 42 \i thick at base, 13-23 [x, av. 18.2a at apices, 

 branching dichotomously or subdichotomously. 



"Zoosporangia terminal, sympodially arranged, sometimes 2-6 in 

 chains. Primary ones clavate, oval to fusiform, 29-45 : 84-118 a, av. 

 37.3 X 97.0 (jl, catenate ones cylindrical, barrel-shaped 29-45 : 50-88 

 [j., av. 32.3 < 66.7 \i, occasionally Y- or T-shaped. Zoospores similar 

 [in] shape and size to All. javanicus vox. japonensis Indoh. 



"Chlamydocysts terminal on asexual mycelia, spherical to ovoid, 

 42-67 x 67-109 u, av. 49.7 86.1 u, sympodially arranged, but in old 

 cultures many of them crooked ovoid, some ones arranged in catenate 

 [manner], subcylindrical to long barrel-shaped, occasionally L- or T-- 

 shaped. Appearing yellow orange [in] color, with two layers of mem- 

 branes, outer one thick conspicuously and finely pitted as All. javanicus 

 var. japonensis Indoh. 



"Sexual reproduction by means of anisogamic gametogamy. Primary 

 gametangia terminal on sexual mycelia arranged sympodially, consisting 

 of an epigynous male gametangium and a hypogynous female game- 

 tangium. Later arranged in catenate [manner]. Male gametangia salmon- 

 orange globose, 3.5-5.5 7.5-10.5 u, female gametangia cylindrical to 

 barrel-shaped 7.5-9.5 12-16 u, the length of female gametangium is 

 2 to 3 times of the length of the paired male gametangium. But in old 

 cultures, occurs [sic] various sizes and forms of male and female game- 

 tangia, subglobose, narrow cylindrical, long or short barrel-shaped, Y- 

 shaped. Male and female gametes and zygotes, of similar form and 

 behaviors, to All. javanicus var. japonensis Indoh" [=A. macrogynus] 

 (Indoh, loc. cit.). 



Isolated from paddy soil with boiled hempseed, Japan. 



Group Cystogenes 

 With asexual phase dominant, the gametophyte represented by a cyst ; 

 resting spore deciduous, pits on wall widely spaced, germinating to form 

 planonts which encyst and produce isogamous gametes. 



