142 The North American Cup-Fungi 



Type locality: Finland. 



Distribution: North Dakota; also in Europe. 

 Illustrations: Boud. Ic. Myc. pi. 390; Bres. Fungi Trid. 1: 

 pi. 15; Cooke, Mycographia pi. HO J. 393. 



Exsiccati: Brenckle, Fungi Dakotenses 140. 



19. STREPTOTHECA Vuill. Jour, de Bot. 1: ?>?>. 1887. 



Ascobolus § Ascozonus Renny, Jour. Bot. 12: 355. 1874. 

 Ascozonus Boud. Hist. Class. Discom. Eu. 79. 1907. 



Apothecia minute, scarcely visible to the unaided eye, ex- 

 ternally naked or clothed with poorly developed hyaline hairs, 

 white or whitish ; hymenium plane or convex, roughened by the 

 large protruding asci ; asci broad-clavate to ovoid, with a distinct 

 collar near their apices, more or less attenuated at the apex, 

 opening by a transverse slit which gives the open ascus a bilabiate 

 appearance, many-spored; spores hyaline or subhyaline, small, 

 ellipsoid, often enveloped in a mucilaginous material; paraphyses 

 slender, scant. 



Type species, Streptotheca Boudieri Vuill. 



Asci 32-spored. 1. S. Crouani. 

 Asci 64-spored. 



Spores 6-7 X 12-14 ;u. 2. S. woolhopensis. 



Spores 4X8//. 3. 5. obscura. 



1. Streptotheca Crouani (Renny) Seaver, comb. nov. 



Ascobolus Crouani Renny, Jour. Bot. 12: 356. 1874. 

 Streptotheca Boudieri VuiU. Jour, de Bot. 1: 34. 1887. 

 Ryparobius Crouani Sacc. SyU. Fung. 8: 543. 1889. 

 Ascozonus Boudieri Boud. Hist. Class. Discom. Eu. 79. 1907. 

 Ascozonus Crouani Boud. Hist. Class. Discom. Eu. 79. 1907. 



Apothecia minute, scarcely visible to the unaided eye, gre- 

 garious or widely scattered, at first subcylindric, becoming 

 expanded and more or less discoid, not exceeding 0.5 mm. in 

 diameter, white or whitish, externally clothed with a few hair- 

 like hyphae; hymenium plane or convex, of about the same 

 color as the outside of the apothecium; asci clavate, marked 

 near the apex with a distinct thickened ring which projects 

 inward, 32-spored, reaching a length of 120 ^ and a diameter of 

 22 /i, opening by a transverse slit; spores ellipsoid, smooth, 

 hyaline, 3 X 12 )u; paraphyses very slender. 



On dung of different kinds. 



