j 



814 Discomyceta^. Tabrracefp, Ph-cposporse, Tuber. 



subglobo.=!is, iiou stipitatis, 3-4-sporis; spc^-idiis globosis, in matu- 

 ritaro brunneis, reticulato-alveolatis, 42 a. diam. 

 Hah. in humo siib Quercubus in Califoruia. 



4. Tuber candidum Harkn. Proe. Calif. Acad. Sc. 1899, pag. 274, i 

 tab. XLV, flg. 32. — Subglobosum, 2 crn. diam., leve, albido- 

 brnnneum; gleba dilute brunnea, venis attenuatis albis; ascis sub- | 

 globosis, B-4-sporis; sporidiis globosis v. ovoideis, ecliinatis, in 

 maturitate brunneis, 24 j. diam. 



Hah. in terra sub Ceanothi arboribus in. California. — T. 

 echinafo affine. 



5. Tuber citrinum Harkn. Proc. Calif. Acad. Sc. 1899, p. 271, t. XLY, i 

 fig. 30. — Subglobosum, 2 cm. diam., irregulare, verrucosum, fis- 

 sum, citrinum, ad pallide brunneum abiens: gleba alba; ascis glo- 

 bosis, filamentis inclusis; sporidiis binis v. ternis, raro quaternis, 

 ellipsoideis, reticulato-alveolatis, obscure brunneis, 42 « 30. 



Hah. in silvis iu California. — T. rapa:odoro Tul. aftine. 



6. Tuber lacunosum Mattir. Malpighia 1900. p. 53, tab. I, fig. 23-27. a 

 — Irregularitor gibberoso-sulcatum v, marginato-lobatum, magni- 

 tudine varia. pisi, nucis v. ovi gallinacei, sordide luteolum v. ochra- 

 ceo-pallidum; peridio levi, tenui, arcte adhserente; carne firma, pri- 

 mum albida, dein stramineo-avellanea : venis e variis peridii locis 

 in carnem directis, in medio tantum pelkicidis, anastomosantibus, 

 lacunis minutis ac gyrosis; ascis ovato-rotundatis, stipitatis, 90- 

 120 '^ 45-60; paraphysibus septatis, subtifibus; sporidiis ellipsoideo- 

 globosis, reticulatis, kiteo-fuscis, 36-48 }x. diam. 



Hah. sub terra in Sardinia, SiciUa. — Odor debilis; exsicca- 

 tione summopere contrahitur, lacunas evidentissimas prgebens, undc 

 nomen, nec non venas peUucidas obscuras. 



7. Tuber gibbosum Harkn. Proc. Calif. Acad. Sc. 1899, p. 273. — 8 

 Irregulariter gibbosum, 2 cm. diam., cinnamomeum; gleba ochra- 

 cea; septis albis, tortuosis, obscuris; ascis subglobosis, 3-4-sporis; 

 sporidiis ellipsoideis, echinuiatis, atro-brunneis, reticulato-alveola- 

 tis, 36 « 24. 



Hah. in terra sub Quercubus in California. 



8. Tuber monticolum Harkn. Proc. Cahf. Acad. Sc. 1899, p. 271. — 3! 

 Minutum, globosum, 1'/^ cm. diam., leve, sordide albidum, fissum, 

 basi sterili subdefinita instructum; gleba firma. alba; ascis globo- 

 sis, breviter stipitatis, 2-4-sporis; sporidiis ellipsoideis, brunneis, 

 reticulato-alveolatis, 36 » 25. 



Hab. in pinetis in CaHfornia. 



