378 
Wisconsin Academy of Sciences, Arts, and Letters. 
abundant spores of the abnormal forms are smaller, 2-3 x 4-6/*, and 
not obliquely apiculate at the base. They may be the eonidial 
spores of the parasite. As Lyman demonstrated, there are many 
such eonidial spores on the hyphae of the veil. 
The Lentinus Adhaerens Group 
Plants not scaly. The pileus and stem pulverulent and more or 
less gummy or resinous. 
The group is represented in Europe by L. adhaerens Fr., L. pul- 
verulentus Fr. with its variety L. resinaceus Fr., and L. adhaesus 
Britz. The plants of these species are of about the same size, aver¬ 
aging 2 inches high and broad. Their distinguishing feature is 
the smooth, more or less pulverulent gummy or resinous surface of 
the pileus. In those species in which measurements are reported 
the spores are a little smaller than in the Lentinus lepideus group, 
3-5 x 6—10/*. 
No members of the group have been reported from the United 
States as far as I am aware. I have a single plant which is shown 
in the photograph in Plate XXI, E. It grew on a log at Frank¬ 
fort, Michigan. It agrees very closely with L. adhaesus Britz. 
Lentinus 8. The pileus is smooth and slightly sticky, bright red¬ 
dish yellow. The stem is reddish below and whitish above. The 
gills are lacerate-serrate, pale reddish yellow, with spores 3-4 x 6-8/*. 
Basidia club-shaped, 6 x 30-40/*. Britzelmayr’s brief description 
reads: 
“Pileus convex, yellowish red, stipe yellowish above, reddish 
brown below, subequal, rooting. Lamellae whitish or pale yellow¬ 
ish red. Spores 4-5 x 6-8/*. On stumps in autumn. ’ ’ 
The Lentinus suavissimus Group 
The plants of this group are known by their fragrant odor, more 
or less evident brown or red mycelium at the base of the short 
stem, and the small spores, 2-3 x 5-6/*. The plants are small, whit¬ 
ish to yellowish in color, often with a yellow margin to the pileus. 
They vary from umbilicate to infundibuliform with a short central 
stem to dimidiate or with a short lateral stem. 
1. Plate XXII, A-D. A form with the stem white. Lentinus 
suavissimus Fr. The plants were not rare on sticks of willow or 
birch at Neebish, Michigan, in August and September. The odor 
was very noticeable. 
