ALASKA FUNGI 
101 
Leptosphaeria culmifraga (Fr.) Ces. & DeNot. On leaves and sheaths 
of Calamagrostis aleutica. 
Leptosphaeria sp. (folliculata E. E.?) On leaves of Carex sitchensis. 
Leptosphaeria sp. On old stems of Vida faha. 
Melcgramma sp. On stems of Mendesia ferriiginea. 
Mycosphaerella fragariae (Tul.) Lindau. On leaves of Fragaria sp. 
(cultivated hybrids). Quite common but only occasionally destructive. 
Mycosphaerella pinoides Berk. & Blox. On leaves, stems and pods of 
Pisum sativum. In its conidial form (Ascochyta pisi) this fungus is very 
common and destructive; especially late in the season when it may ruin 
what is left of the crop. The peritheda appear in late September and 
October. 
Mycosphaerella populi Schr. On leaves of Popiilus balsamifera. Col- 
lected in the conidial stage known as Septoria populi. 
Phomatospora sp. On the bark of old stems of Chamaenerion spicatum: 
Sphaerella adusta Niessl. On the old stems of Chamaenerion spicatum.. 
Sphaerella caryophylli Pass. On leaves of Dianthus caryopliyllus. 
Sphaerella adusta Niessl. On old stems of Chamaenerion spicatum. 
Sphaerella gaultheris C. & E. On leaves of Gaultheria shallon. 
Sphaerella rumicis (Desm.) Cke. On leaves of Rumex occidentalis. 
Venturia clintoni Pk. On leaves of Cornus canadensis. 
Venturia kalmiae Pk. ? On leaves of Kalmia microphylla. 
Venturia kunzei Sacc. On leaves of Rubus pedatus. 
Venturia pomi (Fr.) Wint. (V. inaequalis (Cke.) Alderh.) On leaves 
and fruit of Pyrus malus. 
Hypocreaceae 
Claviceps microcephala (Wallr.) Tul. In the inflorescence of Calama- 
grostis aleutica, C. langsdorfii, Dactylis glomerata, Phleum pratense. 
Claviceps purpurea (Fr.) Tul. In the inflorescence of Blymus mollis, 
Hordeum boreale. 
Nectria cinnabarina (Tode) Fr. On dead stems of Alnus sitchensis, 
Amelanchier sp., Chamaenerion spicatum, Prunus cerasus, P. domestica, 
P. padus, Pyrus baccata, P. diversifolia, P. malus, Rosa nutkana, R. rugosa, 
Ribes bracteosum, R. nigrum, R. sanguineum, R. vulgare, R. sp. (goose- 
berry), Rubus parviflorum, R. spectabile, R. strigosus, Salix viminalis, 
Salix purpurea, Sorbus sitchensis, Samhucus pubens. Viburnum sp. This 
species makes its appearance from December to April, the conidial stage 
(Tuber cularia vulgaris) appearing first, but quickly followed by the peri- 
thecia. It seems to attack nearly all kinds of recently killed wood in- 
cluding prunings from woody plants. On Chamaenerion spicatum which 
has an herbaceous stem the perithecia did not develop, but on all the more 
woody plants perithecia develop in abundance. It has not been observed 
as really parasitic on any species, but wood that has been in a dying 
condition in the fall has been observed as affected in the early spring 
following. 
Dothidiaceae 
Phyllachora graminis (Pers.) Fckl. On leaves of Calamagrostis langs- 
dorfii. 
Phyllachora heraclei (Fr.) Fckl. On leaves of Heracleum lanatum. 
