232 FUNGUS-FLOEA. 



Ascophore erumpent, subglobose, closed and sessile at 

 first, then furnished with a short slender stem, glabrous, 

 horny, mouth somewhat contracted and bordered by a, 

 delicate, pale, dry, minutely fimbriate margin formed of 

 thin, parallel hyphae ; J-1 mm. high and broad ; asci 

 clavate, apex narrowed, 8-spored; spores narrowly elliptical, 

 ends obtuse, usually slightly curved, hyaline, smooth, 

 continuous, often 1-guttulate, 16-21 x 5-7 /x, 2-seriatej 

 paraphyses septate, slightly clavate at the tips. 



Lycoperdon equiseti, Hoffm., Veg. Crypt., ii. p. 17, tab.' v. 

 fig. 1 (1790). 



Peziza Persoonii, Mong., in Pers., Myc. Eur., i. p. 288, 

 tab. 12, fig. 1 (1822). 



Siamnaria Persoonii, Fckl., Symb. Myc, p. 309 ; Phil., 

 Brit, Disc, p. 321. 



On decaying stems of various species of Equisetum. 



Specimen from Persoon examined, also specimens in Eehm, 

 Ascom., n. 615, and Eab., Fung. Eur., n. 123. 



Sometimes the ascophore remains quite sessile, and in 

 some instances the spores remain 1-seriate. 



HELOTIUM. Pries (emended), (figs. 26-29, p. 156.) 



Ascophore sessile and narrowed to a very short stem-like 

 base, or distinctly stipitate, the stem not usually longer than 

 the breadth of the disc; minute, rarely more than 3 mm. 

 across, usually much less ; closed at first, then gradually 

 expanding until plane, or even slightly convex, glabrous, 

 margin entire ; cortex parenchymatous, hypothecium hya- 

 line ; asci narrowly cylindric-clavate, apex slightly narrowed, 

 8-spored; spores hyaline, smooth, elongated, continuous 

 or 1-septate, 2-seriate; paraphyses present. Growing on 

 plants. 



Selotium, Fries, Summa Veg. Scand., p. 366 ; Phil., Brit. 

 Disc, p. 152 ; Sacc, Syll., viii. p. 210 (all in part). 



Symenoscyjpha, Phil., Brit. Disc, p. Ill (in part). 



Species belonging to various other genera are also included, 

 as will be seen by the synonymy. 



The leading features of the genus, as here understood, are 

 ■ — ascophore minute, glabrous, margin entire; sessile or 



