ALASKA FUNGI 
105 
Dematiaceae 
Cercospora sp. On leaves of Castilleja pallida. 
Cladosporium carpophilum Thum. On leaves of Prunus padus. 
Cladosporium heliotropii Erikss. On leaves of Heliotropium peruvianum. 
Cladosporium paeoniae Pass. On leaves of Paeonia sp, 
Cladosporium sp. Undetermined species of Cladosporiujn occur on 
Gaillardia sp., Prunus mahaleb, Ribes hudsonianum, Viburnum pauciflorum. 
Hadrotrichum linearis Pk. On leaves of Calamagrostis langsdorfii. 
Haplohasidium pavoninum V. Hohn. On leaves of Aquilegia spp. 
Helminthosporium avenae-sativae (B. C.) Eindau. On leaves of Avena 
sativa. 
Macrosporium brassicae Berk. On leaves of Brassica oleracea. 
Stilbaceae 
Sporocybe sp. On fruits of Ledum groenlandicum. 
Tuberculariaceae 
Fusarium oxysporium Schl. On tubers of Solatium tuberosum causing 
rot. 
UNCLASSIFIED 
Sclerotium sp. In fruits of Rosa rugosa. 
Sclerotium sp. On stems of Sambucus pubens. 
HOST INDEX 
Agrostis exarata Trin. Erysiphe graminis, Septoria graminum. 
Alnus sitchensis (Regel.) Sarg. Cucurbitaria conglobata, Cytospora 
sp., Diaporthe marginalis, Leptothyrium alneum, Melanconium spic-carpon, 
Microsphaera alni, Nectria cinnabarina, Septoria alnifolia. 
*Amelanchier sp. Coryneum longistipatum, Nectria cinnabarina. 
Ammodenia peploides major (Hook.) Wight. Ascochyta sp. 
*Amygdalus persica L. Exoascus deformans. 
Andromeda polifolia L. Rhytisma andromedae. 
*Apium spp. Botrytis cinerea. 
Aquilegia formosa Fisch. Erysiphe polygoni. 
*Aquilegia spp. Haplohasidium pavoninum. 
Arnica latifolia Bong. Sphaerotheca humuli fuliginea. 
Artemisia elatior (T. & G.) Ryd. Erysiphe cichoracearum. 
*Avena sativa L. Ustilago avenae, Helminthosporium avenae-sativae. 
*Brassica campestris L. Plasmodiophora brassicae. 
*Brassica oleracea L. and vars. Botrytis cinerea, Macrosporium brassi- 
cae, Plasmodiophora brassicae. Pseudomonas campestris. 
Calamagrostis aleutica Bong. Claviceps microcephala, Leptosphaeria 
culmifraga. 
Calamagrostis langsdorfii Trin. Claviceps microcephala, Hadrotrichum 
linearis, Phyllachora graminis, Septoria graminum. 
^Calendula officinalis L. Botrytis cinerea. 
*Caragana arborescens Lam. Phyllosticta gallorum. 
Carex sitchensis Prescott. Leptosphaeria sp. 
Indicates cultivated plant. 
