330 University of California Publications in Botany [Vol.6 



A. Asci cylindrical to club-shaped, uot constricted nor annulate between spores. 

 Ascocarp rarely exceeding 2.5 cm. in diam., -wliitish to brown, simply lobed 



to closely folded; paraphyses slightly longer than asci, terminal cells 

 swollen, 2-6^ thick G. KarTcnessii. 



Ascocarp averaging 1.5 cm. in diam., dark brown, somewhat lobed, folded 

 within; paraphyses equal in length to asci, terminal cells swollen, 5-8^ 

 thick G. Cooper I. 



Ascocarp 4-10 cm. in diam., reddish brown; slightly lobed; closely folded 

 within, generally enclosing tomentum-Iined cavity; paraphyses a little 

 shorter than asci, terminal cells slightly swollen, 6^ thick G. magnifica. 



B. Asci cylindrical, constricted, with annulate thickenings betw-een spores. 

 Ascocarp 2-2.5 cm. in diam., much wrinkled; loosely folded within; para- 

 physes equal in length to asci; terminal cell not swollen, 4-5/i thick 



G. annulata. 



Geopora Harknessii Fischer 



Plate 30, fig. 37 



Botanische Zeitung, 1908, p. 157. 



Pseudhydnotrya Harknessii Fischer, in Engler und Prantl, Die natiirlichen 



Pflanzenfamilien (1897), I Tail, Abteilung 1, p. 282. 

 PsetuViydiiotrya carnea Hk., Proe. Cal. Sci., 3d ser., vol. 1, no. 8 (1899), 



p. 267, plate XLIII, figs. 16a-16fo. 

 Pseudhydnotrya nigra Hk., Proc. Cal. Acad. Sci., 3d ser., vol. ], no. S, p. 267. 



Ascocarp light to dark brown, without definite point of attachment 

 of mycelium, whole ascocarp at first enclosed in dense mass of brown 

 branched hyphae ; 0.7-4 cm. in diam. ; varying in shape from slightly 

 lobed to much folded, folds often extending far into interior ; surface 

 more or less verrucose, tomentose, with long coarse hairs ; interior 

 chamber comparatively simple to exceedingly irregular and consisting 

 of long, connected labyrinthine canals, due to infolding of or projec- 

 tions from wall ; folds and projections mostly easily separable but 

 sometimes more or less connected ; surface hairs continuing on infolded 

 cortex, making folds appear as if filled with loose hyphal tissue ; folds 

 sometimes so closely crowded that tips of two layers of paraphyses 

 meet ; tissue of external wall and folds more or less pseudoparen- 

 chymatous between hymenium and tomentum of surface ; outer cells of 

 cortex colored and larger than inner colorless cells ; asci cylindrical to 

 somewhat club-shaped, not constricted between spores, rounded or 

 somewhat pointed at apex, 16-28 by 140-200/x; spores smooth, 1- or 

 incompletely 2-seriate, globose-ellipsoid to long cylindrical with 

 rounded ends, 10-16 by 18-22ju,; paraphyses colorless, terminal cell 

 swollen, 2-6/i. thick, little longer than asci. 



"Under shinibs among vegetable humus. Mill Vallev, Marin Co., Calif., 

 April." No". 1, Hk. Col. Type? 



"Among shrubs. Auburn, Placer Co., Calif., Mav; under rocks. Mill 

 Valley, Marin Co., Calif., April." 



No. ]81, Ilk. Col. Type of Pseudhydnotrya carnea. Hk. 



