8 ACOTYLEDONS. — FUNGI. Hyslcrium. 



30. S. pulvis pyrtus, simple crowded, sphserules ovate or round- 

 ish tuberculated rugose sulcate in the middle. Pers. p. 86. 

 Moug. et. Nesll. No. 381. 



Hab, On dead wood, about Edinb. Sept, Mr. Greville. 



31. S. moriformis, gregarious simple, sphasrules tuberculated 

 obovate. Pers. p. 86. 



Hab. On dead wood, about Edinb. Sept. Mr. Greville. 



32. S. punctiformis, simple epiphyllous punctiform, sphaerules 

 scattered umbilicated by collapsion, somewhat shining. Pers» 

 p. 90. 



^. Hederce, larger depressed cupuliform. 



Hab. j3. On the underside of the leaves of Hedera Helix, about 

 Edinb. Autumn. Mr. Greville. 



33. S. ^gopof^n, simple epiphyllous scattered, sphaerules black- 

 ish inserted upon a pale crustiform spot. Pers. p. 89. 



Hab. On the leaves of /Egopodium Podagraria, about Edinb. July. 

 Mr. Greville. 



34 . S. strobilina, simple scattered bursting through the epider- 

 mis, sphserules irregularly oblong black depressed in thecentre. 

 Moug. et Nest I, No. 5*72. Hysterium conigenum. Pers. 

 p.l02} 



Hab. On the decaying scales of the cones of firs. Autumn. Mr. 



Greville. 

 Growing on the outside of the scale, and confined to that part 



which is exposed when the scales are upon the cone. 



2. HYSTERIUM. 



Receptacle none. Perithecmm for the most part oblong, opening 

 with a longitudinal fissure. 



1. H. pulicare, gregarious oblong or elliptical striated. Pers, 

 p. 98. Lichen scripius ^.pulicaris, Light/. p. SOI {accord' 

 ing to Pers.). 



Hab. On the bark of trees. 



Differs from the genus Opegrapha, in having no crust. 



2. H. angustatum^ linear elongated subparallel smoothish. 

 Pers. p. 99. Moug. et Nest I. No. 563. Nees von Esenh. 

 t. 39. /. 303. a. 



Hab, On dead wood about Edinb. August. Mr. Greville. 

 Very narrow, substance softer and more open than the latter j colour 

 black, opaque. 



3. H. Praxinij bursting through the epidermis black subovate 

 with the margins tumid. Pers.p.lOQ. Sphceria sulcata. 

 Sow. t.3lb. 



Hab. On the branches of ash-trees, about Edinb. August. Mr. 

 Greville. 



4. H. Pinastri, bursting through the epidermis oval black shi- 

 ning. Pers. p. xxviii. Moug. et Nestl. No. 76. 



