116 



alboflava. Flocci capillitii tenerrimi, in reticulum clensum 

 connexi, incolores, protuberantiis numerosis, miuutis praediti. 

 Sporae sublaeves, fusco-atrae, diam. 10 — 11 mram. 



Syn. Diderma effusum Link. Obs. II, p. 42. Didymium 

 effusum Rostaf. Sluzowc. p. 163. 



Hab. In foliis deciduis arborum frondosarura, praeci- 

 pue Belulae, aestate et auturano. 



8. D. sqvamulosum (Ai.b. et Scuw.) Fr. Syst. myc. 



III, p. 118. 



Sporangia stipitata, hemisphaerica, basi applanata et 

 umbilicata, superne demum frustulatim rumpentia, 1 mm 

 lata. Stipes sporangium inträns ibiqve in columellam sphae- 

 roideam, laevem, niveam expansus, logitudinaliter leviter 

 striatus, niveus, sporangium aeqvans. Flocci capillitii tenelli, 

 hyalini, e columella surgentes, angulis valde acutis ramosi. 

 Sporae laeves, fusco-atrae, diam. 8 — 10 mmm. 



Syn. Reticularia hemisphaerica Bull. Ohamp. Franc. p. 93 

 pr p. Diderma sqvamulosum Ai.b. et Schw. Oonsp. Fung. nisk. t. 



IV, f. 5. Didymium herbarum Fr. Syst. myc. III, p. 120. D. 

 sqvamulosum Rostaf. Slnzowc. p. 159, f. 148. 



Hab. Ad folia decidua vel viva ; aestate et autumno. 



Var. p\ leucopus. Didymium leucopus Fr. Syst. myc. 

 III, p. 121. 



Sporangia sphaeroidea, subtus leviter vel vix umbilicata, 

 non rumpentia, 0,3 — 0,5 mm. lata. Stipes brevis, rigidus, 

 alte striatus. 



Hab. In truncis. E Fennia nobis non visum. 



Var. y. costatum. Didymium costatum Fr. Syst. myc. 

 III, p. 118. 



Sporangia irregulariter hemisphaerica vel lenticulari- 



