GEOGLOSSUM. 4«l> 



delicate, raised margin ; paraphyses septate, tips brown, 

 clavate, about 3*5 fx thick. 



Helotium vibrisseoides, Peck, 32nd Report, 1879. 



Vibrissea turbinate, Phil., Brit. Disc, p. 320. 



On branches of ash in a watercourse. 



British specimen named by Thillips, examined. 



Vibrissea microscopica. B. & Br., Ann. Xat. Hist., 

 n. 1618, ser. iv. vol. xvii. p. 142 (1876); Phi]., Trans. Linn. 

 Soc, ser. xi., vol. ii. p. 7, t. i. f. 17-24; Phil., Brit. Disc, 

 p. 319; Sacc, Syll., viii. n. 175. 



Very minute, shortly stipitate, at first piriform, then ex- 

 panding and becoming concave or almost plane, grey, about 

 ]- mm. high and broad ; excipulum pseudoparenchymatous, 

 the cells running out into parallel, septate hyphae at the 

 surface and margin ; asci narrowly clavate, apex narrowed, 

 pedicel long and slender, 8-spored ; spores arranged in a 

 parallel fascicle, hyaline, continuous, often slightly curved ; 

 needle-shaped, 50-60 x 2 fx ; paraphyses very slender, 

 numerous, tips not thickened. 



On damp fir-wood. 



Type specimen examined. 



Scarcely visible without a lens. Stem very short, black ; 

 head grey r , leaving a cup-shaped depression when completely 

 washed off; sporidia ejected, filiform. (B. & Br.) 



GEOGLOSSUM. Pers. (emended), (figs. 8-10, p. 188.) 



Entire fungus more or less clavate, erect, the apical, 

 thickened portion everywhere covered with the hymen ium ; 

 glabrous or hairy, often viscid ; asci clavate, apex narrowed, 

 8-spored; spores elongated, arranged in a parallel fascicle, 

 cylindrical or very slightly thickened above the middle, and 

 inclined to become cylindric-clavate, brown, septate, usually 

 slightly curved ; paraphyses septate, brown at the tips, often 

 longer than the asci. 



Geoglossum, Persoon, Obs. Mycol., i. p. 11 ; Sacc, Syll., viii. 

 p. 42 ; Phil., Brit. Disc, p. 34 (in part). 



Distinguished among the clavate species by the long, nar- 



