CMo:siA.CEi, ' 523 



Ann. Sc. Nat. ser. 4, vol. n.p. 95. Cooke M.F.p. 214. Cooke exs. 

 no. 84. Cooke L.F. no AS. 



On leayes of Popiilus tremula. Comnioii, 



Spores perfected during the winter. 



1561. Melampsoxa populina. Lev. "Poplar Brand." 



Hypophyllous, epiphjUous, or amphigenous. 



SoiMER-spoRES. Spoies jellow or oraage, obovate-oblong, 

 attenuated or truncate, echinulate, paraphyses obovate, capitate, 

 or clayiform, abundant in fully ripened sori. — Uredo longicap- 

 sula D.C. U. cylindrica. Eng. Fl. \. p. ZSh, partly. Lecytliea 

 populina. Lev. Ann. Sc. Nat, Cooke M.F. p. 206. Cooke exs. no, 

 83. 



Winter-spores. Sori at first tawny-yellow, becoming black 

 during tbe winter, swelling in the spring, and becoming of a 

 cinnamon colour, on the upper surface of the leaves, roundish or 

 oblong ; spores prism-shaped, 5-6 together, yellowish, smooth. — 

 Tul. Ann. Sc. Nat. 4. ser. vol. 2, t. 7,f. 10. Cooke Jlicr. Fungi, pi, 

 ix.fgs. 195, 196. Cooke exs. no, 83. Cooke L.F. no. 47. 



On leaves of Populus nigra. Common. 



Spores perfected in February. 



1562c HfZelampsora euphor'oiae. Cast. •' Spurge Brand." 



Summer-spores. Hypophyllous ; sori golden yellow, scat- 

 tered, distinct, sometimes cauline ; spores small, subglobose. — 

 Uredo eup)horhi<F. Eng. Fl. v. p. 385. Lecythea euphorhice. Lev. 

 Ann. Sc. Nat. Cooke M.F. p). 206. Cooke exs. no. 65. Berk, exs, 

 no, 240. 



"WixTER-spoREs. Sori becomiug black, small, roundish ; 

 spores prismatic, membrane thickened above, dark-brown. — Tul. 

 Ann. Sc. Nat, ser. 4, vol. ii.p. 100. Cooke M.F. pi. ix. fgs. 193, 

 194. 



On leaves and stems of Euphorbia helioscojyia, E. exigua, and 

 ©ther species. Common- 



nflelaznpsora padi. This name has been given by some 

 author to a Melampsora, on leaves of Prunus padus, which we 

 have once met with in Kent. It was noted at the time, but re- 

 ference to the author and description was not made, hence it 

 cannot be recorded here beyond the present notice. 



z 2 



