162 



Mycologia 



generic name for the new species, to raise Sphaerodothis to generic 

 rank and to transfer to it some of the closely related species which 

 seem to have, at present, no valid generic appellation. 



Sphaerodothis gen. nov. 



Sphaerodothis sub. gen. Sacc. & Syd., Syll. Fung. 16 : 625. 1902. 



The type of the genus is Auerszvaldia Arengae Rac, which was 

 the monotype of the subgenus of Saccardo and Sydow /. c. 



Sphaerodothis Neowashingtoniae sp. nov. 



Stromata amphigenous, numerous, scattered, subelliptical in 

 outline, irregularly depressed or somewhat collapsed, black, shin- 

 ing, minutely punctate under a lens, 3-8 mm. long, frequently 

 seated on yellowish-brown spots; locules (ascogenous cells) nu- 

 merous, small, ovate or oblong; ostioles few or wanting, umbili- 

 cate; asci fugacious, globose or subglobose, sessile or subsessile, 

 8-spored, 100-120 /a diam. ; paraphyses apparently wanting ; spores 

 oblong-elliptic, smooth, somewhat flattened on one side and with 

 a narrow oblong longitudinal depression in the middle, suggesting 

 in appearance a date seed, hyaline at first and enveloped in a 

 thick mucous layer which disappears at maturity when the spores 

 become a deep chestnut brown, 56-68 X 30-36 ju. Free, mature 

 spores frequently collapse, becoming saddle-shaped. 



On leaves of Neowashingtonia filamentosa, National City, Cal., 

 Jan. 7, 1907, C. O. Smith Coll. Type, No. 1572, C. L. Shear, in 

 Herb. Dept. Agriculture. 



This species appears to be readily distinguished from all others 

 described by the large size and peculiar shape of its spores. 



The following species belong to the same genus and should be 

 transferred to it: 



Sphaerodothis Chamaeropis (Cke.) comb. nov. 



Auerszvaldia Chamaeropis (Cke.) Sacc. Syll. Fung. 2 : 626. 1883. 



Dothidea Champ aeropsidis Cke. Grevillea 7 : 96. 1879. 

 Sphaerodothis palmicola (Speg.) comb. nov. 



Auerswaldia palmicola Speg. Anal. Soc. Ci. Argent. 19: 247. 

 1885. 



Sphaerodothis rimosa (Speg.) comb. nov. 



Auerswaldia rimosa Speg. Anal. Soc. Ci. Argent. 26: 43. 1888. 



