1916] Gilkey: A Revision of the Tuberales of California 301 



No. 70 of this species is cited as G. verrucosa Vitt. by Harkness, 

 while No. 115 is placed under G. ]iisi)i(]i(hi Berk. The bottles in the 

 Harkness collection bearing these numbers are both labeled G. perlafa. 

 The species differs from the description of G. hispidula (Fischer, 

 1897&, p. 20) in having smaller spores (the measurements cited for 

 G. hispidula being 38-42 by 32/x) and in being glabrous. It also 

 differs from descriptions of both G. hispidula and G. verrucosa (in- 

 cluding G. perlata Corda) in having sometimes club-shaped asci, 

 hyphal tissue in the primary cortex, branched paraphyses, and very 

 conspicuously interrupted hymenium. In the University of California 

 herbarium is an Italian specimen from Mattirolo which is labeled G. 

 verrucosa, and which has somewhat larger spores than our plant, no 

 apparent branching of the paraphyses, and no indication of inter- 

 rupted hymenium. Bucholtz (1903) states that the hymenium of G. 

 verrucosa is not continuous, but since this character is found men- 

 tioned in no descriptions it is apparently not conspicuous. The char- 

 acter of the hymenium of our species apparently excludes it from any 

 described species, and seems sufficient basis, together with associated 

 peculiarities of paraphyses and primary cortical tissue, for a distinct 

 species. 



Genea Gardnerii sp. nov. 



Plate 28, figs. 7, 8 



Gcnea sphaerica Hk. non Tul., Proc. Cal. Acad. Sei., 3(1 ser., vol. 1. no. 8 

 (1899), p. 263. 



Ascocarp black, 1-1.5 cm. in diam., very much wrinkled and 

 folded, surface minutely verrucose ; cavity of ascocarp very irregular 

 due to infolding of wall, but rarely to projections from wall; verru- 

 cosities of inner surface equal in size to those of outer ; outer layer of 

 both cortices pseudoparenchymatous, composed of coarse, dark, thick- 

 walled cells, below verrucosities becoming small and tliin-walleil, color- 

 less ; cells of primary cortex gradually lengthening laterally, giving 

 appearance of hyphae with united walls ; hymenium conspicuously 

 divided into "pockets" by sterile strands of tissue composed of united 

 extensions fi'om the two coi'tices, of pseudopai'cneliyma, or by such ex- 

 tensions joined by mass of paraphyses ; asci cylindrical to more or less 

 club-shaped, not constricted but loosely covering si)ores, rounded at 

 apex, 34-42 by 280-425/x, tapering to stipe with latter sometimes much 

 elongated ; spores 1- or rarely incompletely 2-seriate, sometimes only 

 3 or 4 maturing in ascus, ellipsoid, 30-34 by 32-36/i, ; surface densely 

 covered with broad (8/x) low, semi-glo])ose papillae, these miinitcly 

 and more or less evenly ]mpillose; ])ai'ai)liyses irregular in shape with 

 some cells long-cylindrical, others short and swollen; 3-9//, in width, 

 branched. 





