SCW lyredinacefe, Didymosporse, Puccinia. 



Hah. in foliis caulibusque Jurineae albicaulis, J. linea- 

 rifolise, J. polycloni, J. stoechadifoliae, Cherson RossiaB. 



45. Puccinia Tracyl Sacc. et Syd. Puccinia irregidaiis EU. et Tracy 1067 

 Bull. Torr. Bot. Cl. 1897, p. 283. — Ampbigena, saepius autem 

 hypophylla; soris minutis subhemisphgericis, in maculis pallidis mi- 

 nutis aggregatis v. subcircinatis ; teleutosporis elUpticis v. oblongo- 

 ellipticis, constrictis, 50-70 v 20-30, episporio levi pallide brunneo, 

 apice valde incrassato ibique in papillam subhyalinam conicam 

 abeunte prgeditis, pedicello dilute colorato, 80-110 y . longo, sufful- 

 tis; mesosporis 30-40 *:« 18-22. 



Ha^. in foliis Solidaginis spec. in Colorado, in foliis Soli- 

 daginis spectabilis var. rigidiusculae in Nebraska, Amer. 

 bor. — Soris multo minoribus, angustioribus, sporis longius pe- 

 dicellatis praecipue a Puccinia Solidagini^i distincta species. 



46. Pi'ccinia Tithoniae Diet. et Hoiw. Bot. Gaz. 1897, p. 31. — Soris nm 

 uredosporiferis plerumque hypophyllis, minutis, sparsis, cinnamo- 

 meis, pulverulentis ; uredosporis globosis v. ovatis, 24-30 « 20-26, 

 membrana tenui, fusca, brevissime echinulata ; soris teleutosporife- 



ris plerumque hypophyllis, minutis, sparsis, nigris; teleutosporis 

 ellipticis v. ovatis, utrinque rotundatis, leniter constrictis, 38-52 >f 

 22-27, levibus, castaneis, apice calyptratis v. rarius conico-incras- 

 satis, plerumque pallidioribus ; pedicello hyaJino, subiirmo, sporam 

 superante. 



Hah. in foliis Tithoniae cubiflorse et tagetiflorae in 

 Mexico (Holway). 



47. Pucclnia abrupta Diet. et Holw. Hedw. 1898, p. 205. — Soris i069 

 in caulibus petiolisque callos longos ejQficieiitibus, in foUis plerum- 

 que epiphyllis, mediocribus, irregularibus obscure brunneis, nudis, 

 pulveraceis; uredosporis globosis, late eUipticis vel ovoideis, 23- 



26 « 22-25, flavo-brunneis, echinulatis, poris 2 germinationis in- 

 structis; teleutosporis late eUipticis, basi lata rotundatis, vertice 

 hyaUnis et cucuUato-incrassatis, mcdio ienissime vel non constri- 

 ctis, 30-38 « 25-29, episporio ievi, fusco prseditis, pedicello longo, 

 hyalino, facile deciduo suffultis. 



Hah. in caulibus, petiolis et foiiis Viguierre pictse et Y 

 excelsse, Mexico (Holwat). 



48. Puccinla tageticola Diet. et Holw. Bot. Gaz. 1897, p. 26. — io70 

 Soris amphigenis, sparsis, minutis, in cauiibus et pediceiiis majo- 

 ribus, puivinatis, nudis; soris uredosporiferis fuscis; uredosporis 

 eliipticis, obovatis v. giobosis, 24-31 v 17-24, paiiide fuscis, echi- 



