192 



Mycologia 



canadensis and Abies balsamea lest some germinating telia might 

 have escaped detection but there was no result. Uredinia were 

 collected on the young leaves of Agrimonia in May, and this 

 would indicate that probably the rust is either carried over the 

 winter by the urediniospores or is perennial in the rootstock or 

 roots, as the young leaves of the conifers were not open at the 

 time of the collection. 



Summary of Cultures Described in this Article 



I. Life histories supplementing previous zvork of the 

 zvriter or other investigators 



Pucciniastrum pustulatum (Pers.) Dietel. Teliospores from 

 Epilobium angusti folium L. infected Abies balsamea (L.) Mill. 

 Aeciospores from Abies balsamea infected Epilobium angusti- 

 folium L. 



Calyptospora columnaris (A. & S.) Kuehn. Teliospores from 

 Vaccinium pennsylvanicum Lam. infected Abies balsamea (L.) 

 Mill. 



Melampsoropsis ledicola (Peck) Arthur. Teliospores from 

 Ledum groendlandicum Oeder infected Picea canadensis (Mill.) 

 BSP. 



Melampsoropsis Cassandrae (Peck & Clinton) Arthur. Teho- 

 spores from Chamaedaphne calyctdata (L.) Moench infected 

 Picea rubra (DuRoi) Dietr. and Picea mariana (Mill.) BSP. 



Melampsoropsis abietina (A. & S.) Arthur. Teliospores from 

 Ledum groendlandicum Oeder infected Picea rubra (DuRoi) 

 Dietr. 



Uromyces Scirpi Burr. Teliospores from Scirpus campestris 

 var. paludosus (A. Nelson) Fernald infected Cicuta maculata L. 



Uromyces Peckianus Farl. Teliospores from Distichlis spicata 

 (L.) Greene infected A triplex hastata L., Cheno podium album 

 L. and Salic ornia euro pea L. 



Uromyces perigynius Halst. Teliospores from Car ex deflexa 

 Hornem. infected Solidago bicolor L. Teliospores from Carex 

 scoparia Schkuhr. infected Solidago graminifolia (L.) Salisb., 

 and also Aster (puniceusf). 



Puccinia perplexans Plow. Teliospores from Alopecurus pra- 

 tensis L. infected Ranunculus acris L. 



