I 



894 Tuberoidese, Tuberacese, Tuber. 



29. Tuber Mougeotii Quel. Ass. Fr. 1880, p. 11. t. VIII, f. 13. 

 Globoso-gibbosurn, tuberculatura, tomentellum, candidum dein ca- 

 num; gleba granulosa, hyalina, deraum mellea olivaceaque varie- 

 gata, venis albis marmorata; ascis globosis, breviter stipitatis, 2- 

 4-sporis; sporidiis globosis, episporio reticulato simul et tenue acu- 

 leato-elevato praeditis, citrinis, hyalinis, 30-40 a, diam. 



Hab. in silvis abiegnis in Vogesis Galliae. — Fungus 5-8 mrn. 

 diara. 



III. OoGASTaR Corda Icon. Fung. VI, p. 70. — Sporidia reticulo destituta, i 

 echina.ta, ellipsoidea. 



A) Ascomatis superflcies verrucis magnis, polygoniis asperata. 



30. Tuber Guionum (Corda) Paol. Oogaster Gulonum Corda Icon. 

 Fung. VI, p. 74, f. 125 et Oog. cibarius Corda loc. cit. f. 126. — 

 Globoso-ovoideum, verrucis maximis asperatum; gleba venis nu«, 

 merosis, meandrice flexuosis notata; ascis ellipsoideo-globosis, ses- 

 silibus vel vix stipitatis, 1-4- rarius 5-sporis; sporidiis ellipsoideis, 

 echinatis, 31,5-52,5 a. diam. 



Hab. in Gallia. — Valde affine T. melanosporo, venarum di- 

 spositione ab eo tantum difFert. 



31. Tuber Renati H. Bonn. Rev. Myc. 1884, p. 137. — Globosum, 

 irregulare, glabrum, verrucis plerumque 5-goniis asperatum, fo- 

 veola V. basi propria destitutum, rufescenti-nigrum; gleba rubro- 

 brunneo-violacea v. vinosa, venis sterilibus albo-rufescentibus, gy* 

 rosis, utrinque linea latiore violacea marginatis, marmorata; ascis 

 e globoso ellipsoideis, longe lateque stipitatis, 4-6-sporis ; sporidiis 

 ellipsoideis, saturate nigris, dense longeque echinatis, 31-37 ^ 24-28. 



Hab. prope Apt Galli^e austr. — Fungus crassitudine nucis 

 avellanse v. juglandina^. 



32. Tuber Caroli Bonn. Rev. Mycol. 1885, p. 8. — Globosum, bruQ- 

 neo-ferrugineum, verrucis plerumque 5-goniis asperatum, basi squa- 

 miformi, eximia in.structum; gleba firma, sicca, pallide luteola, dein 

 luteola, venis albis, numerosis, latissimis, e fungi basi exorieuti- 

 bus, gyrosis marmorata, lineis obscuris destituta; ascis globosis v. 

 piriformibus, longe lateque stipitatis, 1-4-sporis; sporidiis eliipsoi- 

 deis, dense et acute aculeatis, maguis, 20-22 ^ 14-15, luteo-brunneis. 



Hab. prope Bruyeres Galliae. — Fungus 10-12 mm. long.; odor 

 nullus ; sapor parum gratus, subdulcis. 



33. Tuber melanosporum Vittad. Monogr. p. 36, t. II, f. 3, et t. III, 

 f. 20, Tul. Ilypog. p. 136, t. III, f. 2, t. VII, f. 1, t. XVII, f. %, 



