266 Transactions British Mycological Society. 



achroae, oblongae, 3 x i-i-5/ix, interdum curvulse, continuae, 

 sporophoris brevibus suffultae. 



8. Hyalinia Leightoni (Phill.) Boud. v. lignicola. 



Scattered or crowded, confluent, sessile, glabrous, diaphanous, 

 translucent, depressed or almost plane i to 1-5 mm. diameter; 

 when dry angularly contracted with margin sometimes raised; 

 hymenium whitish, excipulum parenchymatous and fuscous: 

 asci cylindrical, apex narrowed 100 y 8/x ; spores 8-13 x 2-5-3/x, 

 elliptical with blunt ends, irregularly one or two seriate; para- 

 physes filiform, branched, same length as asci, -S/u. wide (figs, i, 

 2, 28, 29, 30). 



Habitat. Decaying wood. Plowden near Shrewsbury, Sept. 

 1917. 



This fungus seems to differ very little from Calloria Leightoni 

 found by Phillips growing on a Polyporus, and which does not 

 appear to have been seen since: it seems advisable however to 

 consider it a variety as the substratum is very different, and 

 the colour fuscous instead of yellow or white. 



9. Calloria extumescens Karst. 



Gregarious or often confluent, -3 to -5 mm. diameter, sessile, 

 globose at first becoming plane or slightly concave, glabrous, 

 sub-gelatinous when moist, excipulum formed of anastomosing 

 hyphae, bright yellow when young, becoming flesh coloured or 

 reddish brown; asci cylindrical clavate, 60 x 6fi; spores hyaline 

 continuous or uniseptate (rarely more) 10-13 ^ ^l^> elliptical, 

 ends rather acute; paraphyses filiform, i-i-2/x (figs. 23, 24, 25, 

 26, 27). 



Habitat. On decaying oak. Bomere near Shrewsbury, 

 Sept. 1917. 



This agrees with Karsten's description of C. extumescens 

 but according to Rehm the excipulum should be parenchyma- 

 tous. Karsten does not describe the excipulum. 



This fungus is also near Mollisia Mali (Rehm) Phill. ( = Urceo- 

 lella Mali (Rehm) Boud.) but differs in the confluent apothecia, 

 the uniseptate spores, which sometimes even have two septa, 

 also the colour which although bright yellow when quite young 

 becomes flesh-coloured and reddish brown later. 



10. Mollisia Populi n. sp. 



Gregarious, sessile, saucer-shaped, becoming plane and 

 revolute, 1-2 mm. diameter, hymenium grey when young, 

 pinkish or ochraceous when older ; excipulum grey with an olive 

 tinge, parenchymatous, margin fimbriate, asci cylindrical, 

 90-100 y 7-10^, apex narrowed, short pedicel, spores two 



