272 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



84. Tuber (Eutuber) magnatum Pico. 



Tuber (Eutuber) magnatum Pico, Melethemata, p. 79. 



Ochraceo-pallens v. dilute virescens, subleve aut minutissime papillosum, 

 difforme, globoso-angulosum et varie lobatum, basi obconica instructum; 

 venis aeriferis tenuissimis, reticulatis; asci 1-3-sporis; sporis fuscis elliptico- 

 rotundatis et alveolato-reticulatis, retis alveolis amplis. (Tul., Fungi Hypo., 

 P- 150-) 



No. 62, Harkness Coll. 



In oak forest, San Rafael, Marin County, Calif., March; 

 under oaks. Wire Bridge, Placer County, Calif., March. 



85. Tuber (Eutuber) Borchii Vitt. 



Tuber (Eutuber) Borchii Virr., Monog. Tub., p. 44, Tab. I, Fig. 3. 



Globosum, vulgo regulare, puberulum, albidum, maculis candidis notatum 

 posteaque rufescentibus conspurcatum, intus ex albido fuligineo-violaceum et 

 etiam fusco-nigricans, venis albidis rariusque lineis obscurioribus marmor- 

 atum; sporangiis elliptico-rotundatis, saepius 1-3-sporis; sporis crassis ovatis 

 reticulato-alveolatis spisseque luteo-brunneis. (Tul., Fungi Hypo., p. 145.) 



No. 54, Harkness Coll. 



Amongst decaying leaves of oak, Mt. Tamalpais, Marin 

 County, Calif., June. 



86. Tuber (Eutuber) australe Sfeg. 



Tuber (Eutuber) australe Spec, Ann. de Sociedad Cientifica Argentina, 

 Vol. XXIV, 1887, p. 122. 



Globosum V. globoso-trigonum, superne integrum, inferne saepius trilobatum, 

 magnitudine valde ludens (4-30 mill, diam.), Isevissimum, sordide album; cutis 

 tenuis a carne inseparabilis; caro compactiuscula, alba, dein grisea, venis 

 parcis crassiusculis, albidis, immutabilibus ramoso-anastomosantibus per- 

 cursa; asci in pulpa dense dispersi, globosi v. globoso-elliptici, primo 2-3 

 spori, dein saepius i-spermi v. 2-spermi altero abortive ( 70-90 // x 60-80 ;u ) : 

 sporse globoso-ellipticae, pallide fulgineo-olivaceae, areola hyalina, lata, reti- 

 culato-alveolata cinctse (35-40 fj. x 28-30 /i sine areola; 45-50 11 x 35-38 /x cum 

 areola). 



No. 203, Harkness Coll. 



Amongst oaks in vegetable humus upon a well drained 

 hillside, Auburn, Placer County, Calif., June. 



