PhycomycetEe, ChytriJiacese, Pleotrachelus. 885 



p. 129, t. VI, f. 1-8. — Sporangiis singulis v. pluribus ex infla- 

 tionibus liypliarum efformatis, sphsericis, circ. B2 [).. diam., per 

 tubos singulos v. plures longiusculos exterius cleliiscentibus; zoo- 

 sporis generis; sporis perdurantibus spluericis, flavidis, tenuiter 

 tunicatis, spinulis acicularibus longis crebro obductis. 



ITab. parasitice in Pytbio intermedio, Antibes Gallins, 



3. Pseudolpidium ? glenodinianum (Dang.) Fisch. in Rabenh. Krypt. 3198 

 FJ. Pilze IV, p. 36, Olpidium glenodinianum Dangeard, Journ. de 

 Bot. II, p. 6, t. V, f. 6-10. — Sporangiis singulis v. 2-4, rarius 

 pluribus, globosis v. ellipsoideis, tunica levi, h^^alina et contentu 

 quoque hyalino pr^editis, dehiscentite tubulo papillato brevi; zoo- 

 sporis subinde 100 in quoque sporangio, initio globosis, dein ob- 

 longis, subreniformibus, ciliis lateralibus binis prseditis; altero sur- 

 sum altero introrsum verso, minute guttulatis; sporis perduran- 

 tibus nondum visis. 



IJab. parasiticum in Grlenodinio cincto ex Peridineis, in 

 Gallia. 



4. Pseudolpidium ? deformans Serbinow, Scripta Horti Petrop. XXIV 3199 

 (1907) pag. 25 et 154, t. I, f. 1-12, IV, f. 16-28. — Thallo ex 

 zoosporis confluentibus formato, amoeboide; sporangiis globosis, 



35 a. diam. v. oblongo-ellipsoideis 47^15-27; zoosporis globoso- 

 ellipsoideis, 3-4,7 jj-. diam. sed sat versiformibus, lateraliter 2-c\ 

 liatis, ex collo ejectionis prominulo, 15 « 8, exeuntibus; sporis per- 

 durantibus ignotis. 



Hal). in ramulis lateralibus Dr apar naldiiP glomeratic in 

 Rossia. — Cellul£e matricis hypertrophice deformantur. 



PLEOTRACHELUS Zopf — Syll. VII p. 3 15, XIV p. 440, XVI 

 p. 389. -- Ad hoc gen. seo. Cl. Petersen spectant etiam Chytri- 

 dium (Olpidium) Sphacelariarum Kny, Chyt. (Olpidium) tumefaciens 

 Magn. 



1. Pleotrachelus Wildemani Henn. E. Peters, Ann. Mycol. VITI (1910i 3200 

 p. 553, fig. 25 c. — Zoosporangii.s globosis, 60-80 a. diam., mem- 

 brana levi, fusca, collis 30-10 a. longis munita; aiiis characteri- 



bus ignotis. 



Hab. in rhizinis Musci cujusdam immersi, quas tumefacit, in 

 paludibus Velling Skov (.Tyll) Dani.e. 



2. Pleotrachelus inhabilis Petersen. Oefv. Kgl. Dansk. Virl. Selsk. 8201 

 Forh. 1905) n. 5, p. 466, cum icon. — Zoosporangiis in tetra- 

 trasporis v. in tetrasporangiis matricis solitariis v. pluribus evo- 



