SPHACELIA — HTMBNULA. ' 47 



Mymenula, Pries, Syst. Myc, ii. p. 233 ; Sacc, Syll., iv. 

 p. 667. 



The Mack species are arranged under the genus Hymenopsis, 

 amongst the Tubereulariae dematiae. 



Hymenula constellata. B. & Br. 



Sporodoohia orbicular, 1 ■ 5 mm. across, pallid, compact in 

 the centre, conidiophores branched, compact ; conidia 

 elliptical, 5 X 3 /a. 



Hymenula constellata, B. & Br., Ann. Nat. Hist., n. 1590 ; 

 Sacc, Syll., iv. n. 3170. 



On rotten -wood. 



Hymenula rubella. Pr. (fig. 18, p. 442). 



Sporodochiiim oblong, shining, yellowish-red, agglutinated 

 to the matrix ; conidiophores acicular, sometimes furcate, 

 20-25 X 1 /J.; conidia terminal, cylindrical, ends obtuse, 

 straight or slightly curved, 5-7 X 1*5 /a, hyaline. 



Mymenula rubella. Pries, Elenoh., ii. p. 38 ; Sacc, Syll., iv. 

 n. 3171. 



On dead stems of Typha, Juncus, Phragmites, Garex, &o. 



Hymenula Berkeleyi. Sacc. 



Sporodochium punctiform, pallid, gelatinous, dingy white 

 or pale yellow, about J mm, diameter ; sometimes subundu- 

 late ; conidia elliptical, 6 /a long. 



Hymenula BerJceleyi, Sacc, Syll., iv. n. 3174. 



Hymenula punetiformis, B. & Br., Ann. Nat. Hist., n. 729 ; 

 Berk., Outlines, p. 291. 



On fir wood. "With the habit of a small Galloria. 



Hymenula vulgaris. Pries. 



Sporodochium subgelatinous, naked, slightly elevated, 

 oblong or irregular, 2-6 mm. long, white or with. a tinge of 

 blue when fresh, blackish when dry ; conidiophores erect, 

 densely crowded, very slender, colourless, simple (?), throw- 

 ing off conidia at the apex ; conidia 5—6 X 1 ' 5—2 jx, obtuse 

 at both ends, colourless, very numerous, slig;htly curved. 



Hymenula vulgaris, Pries, Syst. Myc, Hi. p. 234; Sacc, 

 Syll., iv. n. 3157. 



On rotting stems of Angelica, Urtica, &c. 



