Mjxoraycetsje, Myxomjcetaceae, Amaurosporse. Didymium. 335 



— Peridiis subglobosis, plus minusve irregularibus, leniter clepr^^s- 

 sis, sessilibus, 300-500 diam., c;T?spitosis, interdum coniiuentibus; 

 hypothallo tenui, membranaceo, pellucido v. interdum granulis 

 calcareis obsito; tunica peridii tenuissima, levi v. rugulosa,, cinerea, 

 irregulariter fissa, granulis calcareis agglutinatis tecta; columelia 

 alba, hemispbseriea v. depressa, interdum irregulari, granulosa; 

 capillitii iloccis tenuibus, coioratis, apicibus pellucidis, pius miriusve 

 ramosis; sporis globosis, minute verrucosis, violaceis, 9-11 p. diam 



Hdb. ad folia emortua et in lignis putrescentibus in .silvis, 

 Ohio Amer. bor. — Habitus externus omnino Physari cinerei. 



OJACH/EA Fries — Syll. VII, p. 387, XI, p. 465. 



1. Diachasa Thomasii Eex, Journ. Cinc. Soc. Nat. Hist. 1804, p. 57. :^!io 



— Peridiis giobosis, interdum leviter depressis, 0,5-0,7 m.m. diam. ; 

 tunica aurea, subpersistenti, irregulariter dehiscente ; stipite cras^o, 

 sordide luteo-ochraceo, varise longitudinis, interdum. breAnssimo v. 

 obsoleto, ex hypothallo -ochraceo oriundo; columeila conica v. 

 cylindraceo-clavata, centrum peridii attingento ; '-•apillitii floccis 

 gracilibus, brunneis, radiantibus, ramosis, rebiculatim conjunctis, 

 masculis elongatis; sporis globosis, minute verruculosis, violaceisj 

 i 1-12 fx. diam. 



Hab. ad ligna, folia etc, North Carolina Amer. bor 



DIDYMIUM Schroet. — Syll. VII, p. 375, X, p. S5, Xi, p. 464. 



1. Didymium intermediiim Schroet. Hedw. 1896, p. 209. - Pendiis 3iii 

 gregariis, stipitatis; stipite ca. 1 mm. loa.go, superne subuIatO" 

 tenuiori, pallide ilavo, subievi; sporangio hemisphserico, depresso, 

 umbilicato, ca. 0,5 mm. diametro, pariete tenero, hyalino; iioccia 

 capillitii hyalinis, iiexuosis, ramosis interdum torulosis; sporis glo- 

 bosis, 10-12 u. diametro, episporio aterrimO sive violaceo, aculeato. 



Hah. in foliis putrescentibus in prov. St. Catharina .Brasiliae (TJle). 



2. Didymium Anellus Morg. Journ. Cinc. Soc. Nat. Hist. 1894, p. 64. :r!]? 

 tab. XII, fig. 41. -- Plasmodiocarpis articulatim dis])0sitis, deunmi 

 confiuentibus elongatisque, irregulariter connpxis, flexuosis, in hy- 

 pothallum minutum venuiosum basi dilatatis, 0,3-0,5 mm. diam.; 

 tunica obscure colorata, irregulariter fissa, crystaiiis stellato-conge- 

 stis tecta; columella ex squamis brunneis composita; capilHtii 

 floccis tenuibus, obscure coloratis, plus minusve ramosis, reticu- 

 latim junctis; sporis globosis, minutissime verruculosis. violaceis, 

 8-9 ^i^ diam. 



