MONTANA BOTANY NOTES 61 



FUNGI. 



So far as can be learned there have been but two attempts to collect 

 the fungi on living leaves in our region. No attempt having been made so 

 far to get the immense number growing on dead stems and the ground. A 

 few of these have been picked up incidentally only. 



Prin. T. A. Bonser now of the Spokane High School, seems to have made 

 the first collections during his work at the Biological Station. His plants 

 were identified by Prof. Farlow. His list covers 50 species and is embraced 

 in this report. 



During the past season I attempted to get all the Fungi on living leaves 

 in the Flathead region. Some were missed doubtless but most of them were 

 found. My list embraces considerably over 100 species. All my plants were 

 identified by Chas. Peck, Esq., of Albany, New York, and Prof. J. C. Arthur 

 of Purdue University, the latter identifications 'being rusts mostly. 



In the descriptions of dimensions of spores "m" stands for thousands of 

 a millimeter (in the absence of the proper sign). 



Actinomena Rosae (Li.) Fr. On Rosa gymnocarpa. Dayton. 



Aecidium abundans Peck. On Symphoricarpos oreophilus. Lima. 



Aecidium Alleni Clint. On Shepherdia Canadensis. Wild Horse Island. 

 Also on the same host by Bonser in Swan river valley. On Elaeagnus argen- 

 teus near Dayton. It is very rarely found on this host. 



Aecidium Berberidis Pers. Wild Horse Island and Yellow Bay. On Ber- 

 beris repens. 



Aecidium Ranunculacearum DC. On Ranunculus glaberrimus. Lima. 



Aecidium Thalictri Grev. On Thalictrum occidentale. MacDougal Peak 

 (Bonser). .Also by Jones on MacDougal Peak. 



Aecidium cornutum. On Amelanchier alnifolia. Bigfork (Bonser). 



Aecidium cornutum. On Amelanchier alinfolia. Bigfork (Bonser). 



Agyrium elongatum (E. & E.). On dead stems of Valeriana, MacDougal 

 Peak (Bonser). 



Albugo Candida (Pers.) Kuntze. On Capsella Bursa-pastoris. Bigfork. 



Albugo Bliti (Biv.) Kuntze. On Amarantus blitoides. Bigfork. 



Albugo. On Pentstemon confertus. Whitew'ater. 



Ascochyta colorata Peck. On Fragaria vesca. Bigfork. 



Caeoma. On Rubus Nutkana. Bigfork (Bonser). 



Calyptospora columnaris (A. & S.) Kuhn. On Vaccinium Myrtillus var. 

 microphyllum MacDougal Peak. Alpine. 



Cronartium Comandrae Peck. On Comandra pallida at Wild Horse Island 

 and Yellow Ba>'. Also by Elrod. 



Chrysomixa Pyrolae (DC.) Rostr. On Pyrola rotundifolia. Swan river 

 valley (Bon.ser). 



Coleosporium Asteris. On Aster. Swan river valley (Bonser). 



Coieosporium Solidaginis (Schw.) Thun. Probably includes C. Asteris. On 

 Aster leaves at Wild Horse Island, Big Arm, Bigfork and MacDougal Peak. 

 Also on Solidago, Swan river valley (Bonser). 



Cylindrosporium simile Peck, n. sp. Maculae parvae, paucae sparsaeque 

 vel numerosae et saepe confluentes, angulares, pallidae; acervull in macula 

 quavis unus multive, plerumque epiphylli, pulvinati vel plerumque nucleatae, 

 brunnei; sporae fiiformes, curvatae, continuae, hylinae, plerumque nucleatae, 

 40-80 X 4 m. (.0016-. 0032 unciae longae, .00016 unciae latae). On living leaves 

 of Ceanothus sanguineus. Bigfork and MacDougal Peak, Flathead Lake, 

 Montana, August, Jones. Allied to C. Ceanothi E. & E., from which it differs 

 in the color of the spots and in the longer continuous spores. 



oylindrosporium simile var. Pruninum Peck, n. var. Maculae minores, 

 saepe coloratiores; siiorae brt'vi;)res. 30-60 m; basidia longior 15-25 m. In 

 foliis Pruni emarginatae. Yellow Bay on Flathead Lake at 4000° alt. on the 

 slope of the Mission Mts. Some bushes of Prunus emarginata were almost 

 covered with the fungus. 



