32 College of Forestry 
in the above list of exsiccati. Furthermore, Kauffman (1918) 
reports the sycamore (Platanus occidentalis Linn.) as a host 
for this fungus. From the foregoing data it is evident that 
the following woods* are attacked by Polyporus pargamenus: 
Pinus virginiana 
Tsuga canadensis 
Juglans cinerea 
Hicoria minima 
IHicoria ovata 
Hicoria alba 
Hicoria glabra 
Salix nigra 
Salix discolor 
Salia lasiandra 
Populus tremula 
Populus trenuloides 
Populus grandidentata 
Populus balsamifera 
Populus acuminata 
Populus trichocarpa 
Betula alba 
Betula papyrifera 
Betula populifolia 
Betula occidentalis 
Betula lutea 
Betula nigra 
Alnus incana 
Alnus tenuifolia 
Carpinus caroliniana 
Fagus atropunicea 
Castanea dentata 
Quercus alba 
Quercus garryana 
Quercus prinus 
Quercus virguuana 
Quercus rubra 
Quercus texana 
Quercus coccinea 
Quercus velutina 
Quercus californica 
Quercus palustris 
Quercus marilandica 
Quercus nigra 
Quercus imbricaria 
Quercus phellos 
Ulmus americana 
Toxylon pomiferum 
Liriodendron tulipifera 
Persea pubescens 
Sassafras sassafras 
Liqudambar styraciflua 
Platanus occidentalis 
Prunus americana 
Prunus pennsylwanica 
Primus serotina 
Cercis canadensis 
Gleditsia triacanthos 
Rhus vernia 
Ilex opaca 
Acer pennsylvanicum 
Acer saccharum 
Acer saccharinum 
Acer rubrum 
Tilia americana 
Tilia platyphyllos 
Nyssa sylvatica 
Nyssa aquatica 
Rhododendron maainum 
Fraxinus americana 
The above list of host species is but a meager indication 
of the commonly known ones. Unfortunately in most of the 
available collections the host species are either incompletely, 
or more often not at all, given. <A detailed reconnaissance in 
this and foreign countries should more than double the size 
of the present list. 
4The nomenclature used for the trees mentioned in this list is that of 
George B. Sudworth. (Check list of the forest trees of the United 
States, their names and ranges. U. 8. Dept. Agr., Div. Forestry Bul. 
17:144 pp., 1898). 
