1916] Gilkeij: A Revision of the Tuherales of California 299 



One and a half specimens of this species are now present in the 

 Harkness collection, and it is from these that tlie descriptions have 

 been made. 



Genea arenaria ilk. 



PI. 30, fig. 34 

 Proc. Cal. Acad. Sci., 3<1 ser., vol. 1, no. 8 (lSf)9), p. 263. 



Ascocarp brown, 1-2.5 cm. in tliam., irregular, coarsely lobed an<l 

 folded ; surface divided into polygonal areas 5 mm. or less in diam., 

 forming bases of low pyramidal projections rounded at apex ; surface 

 more or less covered with long, brown, septate hairs; cavity of asco- 

 carp irregular through infolding of wall ; inner surface of wall more 

 closely verrucose than outer; outer half of primary cortex of large 

 thin-walled cells, forming psendoparenchymatous tissue ; inner luilf 

 composed of small, variously shaped cells elongated laterally and 

 lying in more or less definite rows (parallel to surface) with walls 

 coalescing; asci cylindrical, sometimes somewhat constricted between 

 spores, rounded at apex, 20-28 by 200-240;U ; spores 1-seriate, ellip- 

 soid, 16-24 by 22-28/x, epispore thin, covered with minute irregular 

 cylindrical, usually truncate verrucosities rarely reaching height of 

 4/x, generally 2fx or less ; paraphyses slender, 4/x or less thick, branched 

 below secondary cortex. 



"In sandy ground. No locality or date." No. 42, Hk. Col. Type. 



"In elav soil under oaks, Claremont Canyon, Berkeley, Calif., Mar. 



4, 1903." No. 8i; U. C. Col. N. L. Gardner. 



"Under oak, Piedmont Park, Oakland, Calif., April 4, 1903." 



No. 96, U. C. Col. N. L. Gardner. 

 "In clay soil under Quercus agrifolia, U. C. Campus, Berkelev, Calif., 



Nov" 26, 1901." No. 225, U. C. Col. N. L. Gardner. 



"Under Quercus aqri folia. U. C. Campus, Berkeley, Calif., Jan. 7, 



1905." No. 247, U. C. Col. N.L.Gardner. 



"Under Quercus agrifolia, U. C. Campus, Berkelev, Calif., Jan. 7, 



1905." No. 248, U. C. Col. N. L. Gardner. 



This species evidently comes near Genea verrucosa Vitt. and Genea 

 pulclira Corda, but it differs from descriptions of these species in 

 several points mentioned below. The spores of the material studied 

 under all the numbers cited above are identical in being very miimtely 

 verrucose. with the projections mostly slender cylindrical and tmui- 

 cate, instead of either semi-globose or conical as described foi- G. 

 verrucosa and figured l)y Tulasne (1851, pis. XII and XIII). The 

 specimens differ from material from ^lattirolo in the University of 

 California collection bearing the name of G. verrucosa, in ligliter 

 color, the presence of hairs upon the ascocarp, verrucosities of the 



