43o ]^hycomycet<p, Mucoracea?, Dispira. 



sautibiis; liyphi.s sporangiferis brevibus, septo basali vulgo con- 

 strictis, apice vesiculoso-inflatis ibique sporopliora secundaria nu- 

 merosa clavata rarius furcata circiter 24 ^. lonoa gradatim ex- 

 pansa 2-vel 4-lobata gerentibus, 300-350 (j. longis, basi 25 w.., 

 apicem versus 17 u. latis; sporangiis 3-sporis; sporis subrectangu- 

 laribus v. angulosis, crasse tunicatis, in maturitate muco obvallatis, 

 13-16 V 7-8. 



Hah. in fimo murino et ovino, New Haven et Cambridge 

 Anier. bor. 



2. Syncephalis tenuis Thaxt. Bot. Gaz. 1897, p. 12, tab. II, fig. 22-31. 1643 



— Hyphis sporangiferis basi septatis, elongatis sursum attenuatis, 

 supra abrupte in capitulum inflatis, 500-700 p. longis, basi 7, 

 apice 4-5 y.. iatis; sporangiis 6 v. pluribus consociatis, orbiculatim 

 dispositis, bisporis; sporis subcylindraceis v. asymmetrice ovalibus, 

 truncatis v. rotundatis, 20-25 « 7 vel 25-27^10-11. 



HaJ). ad Spb.agnum in laboratorio in America boreali. 



3. Syncephalls Wynneae Tliaxt. Bot. Gaz. 1897, p. 11, tab. I, fig. 5-12. 1644 



— A.lba, demum pallide straminea; liyphis sporangiferis erectis, 

 400-475 u. longis, rectis, basi vulgo septatis, rhizoidiferis, sursum 

 attenuatis, apice vesiculoso-inflatis ibique sporophora secundaria 

 clavata apice inflata 25 p. longa gerentibus; sporangiis circiter 12 

 associatis, bisporis; sporis irregulariter elongato-ovalibus, plerum- 

 que subasymmetricis, in maturitate muco obvallatis, 16-19 « 6. 



Hab. ad "Wynneam macrotidem, North Carolina Amer. 

 bor. 



DISPIRA Van Tiegh. — Syll. IV, p. 77. 



1. Dispira americana Thaxt. Bot. Gaz. 1895, p. 513, tab. XXXV. 1&45 



— Hyphis sterilibus ramosis, repentibus; fertilibus solitariis, erectis, 

 septatis, hyalinis, 1 mm. altis, 10-12 p. diam., denique plus mi- 

 nusve regulariter pseudodichotome ramosis; ramulis extremis cur- 

 vulis, sterilibus v. fertilibus, capitula sphserica 35-45 a. diam. ge- 

 reutibus; sterigmatibus numerosis, e duabus cellulis compositis; ca- 

 tenulis sporarum ex apice sterigmatuni orientibus; sporis brevibus, 

 3«1; zygosporis subsphaericis, 35-65 u. diam., pallide brunneis, 

 leviter asperulis, partim processibus rosulatis leniter asperulis digi- 

 tatis circumdatis. 



Hab. in stercore m u r i n , parasitice in hyphis Mucoraceas 

 cujusdam, Ohio, Amer. bor. 



