292 



1372. Melampsora helioscopiae (Pers.) Cast., Syn: Uredo helios- 

 copiae Pers. Syn. "^, Schum. no 1546, Vortemaelkens Brandstev (H. 

 37 '"5), Vortemslkrust (R04a=0. 



Aut-eu-melampsora, st. I (Caeoma) very inconspicuous, st. II &. Ill 

 abundantly from July to October. 



Euphorbia exigua. Samsa; F. Tiselholt, S. Botanisk Have (E. W.), Taastrup, 

 Roskilde (Thomsen), 0rsl0v (P. N.), Naestved; L. Eskildstrup, Stensgaard. 

 Euphorbia peplus. Lsescr ! ; F. Ringe I , Skaarup ; S. Fredriksdal (E. W.), Lyng- 

 by, Roskilde, 0rsl0v. Euphorbia helioscopia. J Ellidshoj ! , Hald Egeskov 

 (Gad); F. Skaarup (Aug. 63); S. Fredriksborg!, Brandsholmsdal (Gad), 

 Flaskekroen (Kjaerskov), Roskilde (Thomsen), 0rsl0v (P. N.) and many other 

 places. Euphorbia cyparissias. F. Skaarup ; S. Slagelse (P. N.). Euphorbia tri- 

 costata. S. Botanisk Have. 



1373. Melampsora lini (Pers.) Tulasne, Syn: Uredo lini Pers. 

 Syn. ^''. 



Aut-eu-melampsora. Its caeoma is very inconspicuous and was un- 

 known till Arthur (07) made cultivating experiments with this spe- 

 cies, proving that its III spores germinate at the end of April and 

 spermogonies are produced in the middle of May and caeoma at the 

 end of May. Formerly it was classified together with the following 

 species. Rostrup was, however, aware (02 a ^'') that most likely there 

 were two different forms. Liro (08 ^^^) also emphasizes that there are 

 morphological differences and Palm (10'') has at last separated them 

 completely. 



Linum catharticum. Common. 



1374. Melampsora liniperda (Koern.) Palm, Harrust R 82 b, 93 

 c '2 fi, 04 a =1 



Koernicke records (77 ^') that seedlings of Linum usitatissimum var. 

 leucocarpum Kcke of seeds which he had obtained from the Botani- 

 cal Garden of Copenhagen were highly infected by Mel. lini. var. 

 liniperda Kcke ; none of the other species of Linum in the immediate 

 vicinity being affected. In 1876 he repeated his experiment with new 

 seed from Copenhagen with the same result. He believes the fungus 

 to have accompanied the seed, but he has not tried to prove whether 

 the mother-plants were infected by fungi. 



Linum usitatissimum. F. Skaarup ; S. Lyngby (K. H.), Landbohejskolens 

 Have ; L. Stensgaard, Bollesminde (August 02). 



1375. Melampsora betulina (Pers.) Tul., Syn: Uredo betuhna 

 Pers. Syn. "^, Melampsoridium betulinum (Pers.) Klebahn (99), Uredo 

 betulae Schum. no 1538, Birkens Brandstev (H 37 ^''"), JBirkerust (R 

 82 b 1° 6. 04 a "), Lit: R 89 a & 00 k, Kleb. 05 *"'. 



Betula pubescens &. verrucosa common. Betula fruiicosa. S. Hxsede Plante- 

 skole. 



