1916] Gilkey: A Revision of the Tuhcrales of California 307 



Ascocarp of loose folds, forming large chambers; paraphyses scarcely swollen; 



spores ellipsoid, minutely papillose. H. ellipsospora. 



Ascocarp containing narrow labyrinthine canals; paraphyses conspicuously swollen; 



spores globose, minutely papillose. U. cercbrifonnis. 



Hydnotrya ellipsospora sj). uov. 



Plate 30, fig. 38 



Ascocarp purplish brown, 1.5 cm. in diam., subglobose, composed 

 of loose folds occasionally joined ; surface of ascocarp minutely vil- 

 lose ; interior of large, hollow, connected chambers opening without at 

 various points; wall of ascocarp 1 mm. thick, lined with hymenium, 

 the transition of hymenium to cortex at external openings plainly 

 visible ; hyphae of wall somewhat connected immediately below ex- 

 ternal surface ; hyphae at surface distinctly separated, somewhat 

 swollen at tips, 9-1 8/x thick, continuing into hymenium as slender 

 paraphyses; asci cylindrical, not constricted between spores, 10 by 

 260^, 8-spored ; spores 1-seriate, ellipsoid, 10 by 14//,, minutely papil- 

 lose ; paraphyses not produced beyond asci, little swollen, 2-5/x thick. 



"Under Quereus agrifolia. Pacific Grove, Calif., Dec. 1909." 



No. 316, U. C. Col. Type. N. L. Gardner and M. B. Nichols. 



This species differs from the descriptions of the genus Hydnotrya 

 in having mostly large, open, connected chambers, regularly cylin- 

 drical, closely crowded asci, and ellipsoid, minutely papillose spores; 

 rather than labyrinthine canals, mostly club-.shaped or long-ovoid, 

 6-8-spored asci, and globose spores with very thick, coarsely papillose 

 epispore, described for Hydnotrya. The spores are much smaller, 

 also, than reported for any described species of which I have found 

 record, those of H. Tulasnei, for instance, cited as 25-35/^ and those 

 of H. jurana, 30-40ju,. However, the ascocarp is of the general struc- 

 ture oi Hydnotrya, i.e., irregularlj^ folded, forming empty cavities be- 

 tween, which open to the surface; the surface is covered witli crowded 

 separate hyphae, more or less swollen, which continue into the hymen- 

 ium as paraphyses ; and the structure between the hymenium and the 

 outer surface of the wall is hyphal. It has seemed best at present, 

 therefore, to extend the genus Hydnotrya, rather than to establish a 

 new genus for this species. 



