380 Rev. M. J. Berkeley and Mr. C. E. Broome on British Fungi. 



issimo pulverulento-tomentoso ; poris minutis angulatis ; dis- 

 sepimentis tenuibus. 



On \evy rotten wood. Staunton, Notts., Sept. 1860. 



Effused, forming patches a few inches long, perfectly white 

 at first, but in drying assuming a delicate pale green, with a 

 honey-like tinge in parts ; border pulverulento-tonientose, very 

 thin ; pores minute, angular ; dissepiments thin. 



This pretty species has the habit of P. vulgaris, but differs in 

 character from anything with which we are acquainted. 



^Hymenoqaster tener, B., Ann. Nat. Hist. ser. 1. vol. xiii. 

 p. 349. Colleyweston, C. E. Broome, Dec. 1860. 



The spores are sometimes surrounded by a hyaline sac, as in 

 one or two other species. 



'^Hysterangium nephriticum, B., Ann. Nat. Hist. ser. 1. vol. xiii. 

 p. 350. Colleyweston, C. E. Broome, Dec. 1860. 



938. Diderma lucidum, n. sp. Subglobosum, sessile, sub- 

 stellatim fissum, lateritio-luteum, intus luteum ; gleba globosa 

 atra ; floccis f uscis areolis triangularibus ; sporis atris minutis- 

 sime echinulatis. 



On JungermanaicE. Trefriw, C. E. Broome ; on Hypnum cu- 

 pressiforme, Cumberland. 



Scattered or crowded, stemless ; peridium subglobose, splitting 

 in an irregular stellate manner, bright reddish-yellow, yellow 

 within ; mass of fruit globose, black ; flocci brown, triangular at 

 the points of ramification and yellowish ; spores globose, black, 

 very minutely echinulate, "0005 inch in diameter. 



A smaller plant than Diderma vernicosum, in which the spores 

 are inclined to be angular, and much paler under the micro- 

 scope. 



Plate XV. fig. 9. a. Plant, nat. size ; b. the same, magnified ; c. plant 

 rui)tured ; d. the same, showing the obscure columella ; e. flocci ; /. spores. 

 (All but a more or less magnified.) 



939. Prosthemium stellare, Riess, Bot. Zeit. 1853, p. 130, 

 t. 3. f. 28-31. On alder. West of England, C. E. Broome. 



Plate XV. fig. 10. A vertical section, highly magnified, showing the 

 wall of the perithecium, the spoi ophores, and spores. 



91-0. Septoria pi'inceps, n. sp. Peritheciis magnis depressis 

 papillatis epidermide tectis; sporis cylindricis oblongis 5-6-sep- 

 tatis hyalinis. 



On beech-sticks. Batheaston, C. E. B. 



Perithecia large, depressed, covered with the cuticle, which 

 they pierce witli their papilliform orifice; spores •002 inch long, 

 cylindrical, oblong, with about seven or eight endochromes, 

 hyaline, oozing out in an irregular mass. 



Plate XV. fig. 11. a. Perithecium; b. sporophores with spores; 

 c. spores. (All more or less magnified.) 



