Harper—Species of Lentirms in Great Lakes Region. 383 
1. Plate XXVII. Lentinus vulpinus (Sow.) Fr. Plants sessile, 
imbricate multiplex. Pilei sessile, reniform, conchate, dimidiate, 
connate behind, surface corrugated and longitudinally striate, 
more or less reticulate or broken up into fibrous tufts on the margin, 
alutaceous or whitish, margin extending beyond the gills and in¬ 
curved, often discolored. Flesh thick, tough, white. Lamellae 
broad, crowded, dentate-lacerate on the edges, white. Spores sub- 
globose, smooth, 3-4jtt. Stumps and logs, especially of elm. 
2. Plate XXVIII. Lentinus ursinus Fr. Like L. vulpinus in 
shape and character and habit of growth, but the pilei are smooth 
on the thin margin and become coarsely tomentose behind with 
reddish brown hairs. The whole plant is darker colored in our 
specimens than L. vulpinus. The spores are exactly the same in 
both species. 
Note 1. L. pelliculosus Schw., found on dead trunks in the Carolinas 
and in Ohio, is a small form of L. ursinus. The pileus is said to be fus¬ 
cous-cervine, thickly strigose like the skin of an animal, with the margin 
naked and involute, the lamellae broad and lacerate. 
Note 2. L. pectinatus Schw. is a plant of the same character and be¬ 
longs to the same group if we may judge by the brief description. It is 
said to resemble L. reniformis. 
Note 3. L. chama Bose, is* a large white form said to have a smooth 
pileus. The pilei are said to be 15 cm. broad. It was found on oak 
stumps in the Carolinas. 
Note 4. L. sulcatus Berk, is a rare plant which grows from crevices 
of dry wood and old fence rails and should be found in our territory. It 
is described by Peck as follows: 
“Pileus fleshy, thin, tough, conic, becoming hemispheric or convex, 
cracking on the surface and forming irregular scales, virgate toward the 
margin, sulcate on the margin, reddish or tawny, often darker in the 
center. Lamellae subdistant, rounded behind or emarginate, slightly 
adnexed, obscurely dentate on the edge, white or pallid. Stem central, 
short, solid, sometimes narrowed downward, pruinose or slightly fur- 
furaceous, white or pallid. Spores oblong, 6-7 y 2 x 13-18^. 
“Pileus 8-12 lines long, stem 6-10 lines long, 1.5-3 lines thick. Crevices 
of dry wood and old fence rails.” 
The group of this species is uncertain. The size of the spores places 
it in the Lentinus lepideus group, but it is found on deciduous trees. 
