834 Myxomycetse, MyxomycetaceEC, Amaurosporae, Chondrioderma. 



Sect. 11. Rextella Morg. 

 Sporangiam ellipsoiilpurti vei ])iriforme, columeila usque ad apicem lere proc'?'iens 



7. Cytidium penetrale Rex, 1. c. p, 11. — Peridiis ellipsoideis v. pi- 3i06 

 riformibus, stipitatis, pariete tenui-membranaceo, pellucido, gra- 

 nulis calcareis pr;edito, flavo-^riseo v. viridi-flavo, maturita.te in 

 segmenta duo v. quatuor fisso ; stipito longo, tenui, pallide v. 

 atro-rubescente, sursum tenuato in peridium fere ad apicem, 

 tamquam coluraella, penetrante; capillitii tubulis tenuibus e punctis 

 variis colnmell'ce orientibus, rete delicatum minutissime areola.tum 

 formantibus; calcis nodulis minutis, non copiosis, rotundis v. ob- 

 tuse angulosis, albis v. flavidis; sporis globosis minutissime ver- 

 rucosis, pallide violaceis 5,5-6,5 p. diam, 



Hdb. in ligno putrescenti, Miami Yalley, Ohio A.mer. bor. — 

 An buc Tilmadoche Mans Eost. ? 



CRATERIUM Trent. — Syll. VII, p. 855, XI, p. 463. 



1. Craterium Maydis Morg. Journ. Cinc. Soc. Nat. Hist. XIX, 1896, 3i07 

 p. 15, tab. II, fig. 57. — Peridiis globosis v. obovoideis, stipitatis, 

 superne membrana flava tcnui, fra.gili, suecinea v. aurea, gramilis 

 calcareis magnis crassisque priedita, basi crassioribus, plicatis, ru- 

 bro-brunneis ; stipite rubro-bruniieo, longo, gracili, plicato, ex hy- 

 pothallo minuto oriundo; tubulis crassis, reticulum formantibus; 

 uodulis calcareis magnis. numerosis, luteis, anguloso-lobatis, ramo- 

 sis; sporis globosis, minutissime verruculosis, pallide violaceis, 9- 

 10 p. diam. 



Hoh. in culmis vetustis Zese Maydis, Ohio Amer. bor. — 

 Peridium cum stipite 1-1 '/^ mm. altum, 4-6 mm. latum. 



CHONDRfODERMA Rost. — Syll. VII, p. 362, X. p. 85, XI. p. 464. 



1. Chondrioderitia qiiitense Pat. BuU. Soc Myc. de Fr. 1895. p. 212. ^nos 



— Peridiis spar.^iis vel gregariis, subinde confluentibus, sessilibus, 

 applanato-rotundatis, membrana exfcerna crustacea, interna viride- 

 scente; capillitio parco, violaceo; tubulis 1 '/,-2 a. cra.ssis, levibus, 

 vr-ctis V. flexuosis, anastoniosantibus; sporis globosis, 13-15 y. diani., 

 atro-violaceis, verrucosis. 



Hah. ad folia putrida dojecta in .^quatoria {\. Lagebhbimj. 



— Ch. (Hfformi aflfine, .sed sporis verrucosis differt. 



2. Chondrioderma Clnereum (Morg ) Sacc. et Syd. Diderma cinereum :5)()0 

 Morg. Journ. Oinc. Soc. Nat. Hist. 1894, p. 70, tab. XII, f. 46. 



