1916] Gilkeij: A Revision of the Tuherales of California 803 



are found in the hymeninm but the latter is not divided into the dis- 

 tinct "pockets" characteristic of our species. No branching of para- 

 physes can be discovered in the Italian plant. The spores of the latter 

 differ from those of ours in having much higher papillae which are 

 truncate, conical or cylindrical, mucli less crowded, and tlie surface 

 between them closely covered with vei-y minute papillae. The latter 

 are also distributed over the larger papillae as in ours, but not so 

 conspicuously. 



Fischer (1897a, p. 23) describes the spores of the type of G. Klotz- 

 sckii, which, he states, approach those of G. verrucosa; and he com- 

 pares with these the spores of material from Mattirolo, the description 

 of which corresponds with the preceding description of a specimen 

 from the same herbarium. Apparently the differences in the two ex- 

 amples occur, however, only in the spore, and as intermediate forms 

 are found and wide variation can be seen in single specimens, he does 

 not consider these a sufficient basis for a new species. In the Cali- 

 fornian material, on the other hand, the variation from the type as 

 described lies not so much in the spore as in the distinct character of 

 the hymenium and in the form of the paraphyses, and it seems best at 

 present to consider this a separate species. 



The material in the University of California collection is in much 

 better condition than the Harkness specimens. For this reason, de- 

 scriptions and illustrations were made from No. 97 of the former, this 

 being selected as the type of the species. 



Genea intermedia nom. nov. 



Plate 29, fig. 14 



Hydnocystis compacta Ilk., Proc. Cal. Acad. Sci., 3d sor., vol. 1, no. S, yi. 

 262, pi. XLIII, figs. lla-Uc. 



Ascocarp reddish brown, somewhat lobed, surface covered by 

 rounded papillae varying in size, reaching 0.3 mm. in diani. : cavity of 

 ascocarp apparently compai-atively simi)le, inner wall following slight 

 lobing of outer ; outer wall more coarsely vei-rucose than inner ; pri- 

 mary eoi-ti'X only slightly thicker than secondary; both i)seudoparen- 

 chymatous throughout, outer cells larger and somewhat thicker-walled 

 than inner and all more or lesfe compressed latei-ally ; hymenium show- 

 ing few "pockets;" asci cylindrical, sometimes constricted between 

 spores, rounded at apex, 44 by 300/x ; spores 1-seriate, globose, 36;li, 

 smooth and hyaline when young, surface at maturity covered with 

 semi-globose papillae varying in size on single spore from 5/j, iu height 

 to very minute granules often coalescing in irregular groups ; in dense 



