116 



alboflava. Flocci capillitii tenerriini, in reticulum densum 



connexi, incolores, protuberantiis numerosis, minutis praecliti. 



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



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

 effusum EosTAP, Slu,^owc. p. 163. 



Hab. In foliis deciduis arborum frondosarum, praeci- 



pue Belulae, aestate et autumno. 



8. D. sqvaraulosum (Ai.n. et Sciiw.) Fr. Sjst. myc. 



III, p. 118. 



Sporangia stipitata, hemisphaerica, basi applanata et 

 umbilicata, superne demum frustulatim rumpentia, 1 mm 

 lata. Stipes sporangium intrans ibiqve in columeUam sphae- 

 roideam, laevem, niveara 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 mrara, 



Syn. Retiadaria hemisphaerica BULL, Champ. Franc, p, 93 

 pr p. Diderma sqvamulosum Alb. et Schw. Oonsp. Fung. nisk. t, 



IV, f. 5. Didymhim herbarum Fr. Syst. niyc. III, p. 120. D. 

 sqvamtdosmn Rostaf. Sluzowc. p. 159, f. 148, 



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



Var. /3, 1 e u c p u s. 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. costatura. Didymium costatum Fr, Syst. myc. 

 III, p. 118. 



Sporangia irregulariter hemisphaerica vel lenticulari- 



