^CIDIACEI, 535 



1600. Peiidermium pini. Chev. " Scotch fir Peridennium. ' 



Spermogones. Yemal or autumnal, or both ; spermatia 

 large, white. 



Protospores. Peridia oblong, scattered, large ; spores 

 orange, abundant. — Coohe M.F. t. 2, f. 27, 28. Seem. Journ. ii. 

 J). 34. FcM. exs. no. 288. jEcidium jnm. Eng. Fl. v. p. 374. Grev. 

 t. 7. Moug. exs. no. 186. Rav. exs. i. no. 93. 



On leaves and young branches of Scoth fir. Summer. 



{Fig. 219, a. nat size, 6. magnified.) 



1601. Peridermium elatinum. Lli. " Silver Fir Perider- 



mium." 



Spermogones. 



Protospores. Simple, immersed ; peridia elliptic, pallid ; 

 sporidia orange. — Kze. exs. no. 141. Seem. Journ. \\. p. 34. CooJce 

 M.F.p. 190. FcU.exs.no. 290. 



On silver fir, altering both foliage and ramification. Not 

 common. 



1602. Peridermium columnare. A. k S. "Columnar 



Peridermium." 



Spermogoxes. 



Protospores. Simple, slender, naked, cylindrical, elongated, 

 lacerated at the apex, white ; spores orange. — A. ^- S. Consp. 

 121, t. 5,/. 4. Kze. exs. no. 10. Cooke M. F. 2nd. ed.p. 223. Cooke 

 exs. no. 214,. 



On Picea, Sept. Near Torquay. 

 Gen. 184. JECISZUM, Pers. 



Peridium seldom elongated, 

 opening by a terminal mouth, 

 surrounded by a fringe of re- 

 curved teeth, or when short 

 bursting irregularly. Spores dis- 

 posed in chains. Spermogonia 

 on the same or the opposite sur- 

 rig. 220. io-QQ^ clustered or scattered, cen- 



tral or intermixed. — {Fig. 220.) 



