Striation. Prominent striations are characteristic of two species, longistria- 
tus and umbonatus; tortus, nanus and admirabilis are sometimes faintly striate; 
granularis, tomentosulus and cervinus are not striate. 
Rugulose pilei; the character of the pileus being rugulose (well shown in 
our photographs of nanus and granularis,) is a feature rather rare among agarics 
in general. It is marked in granularis, nanus, tortus and admirabilis, though the 
absence of the feature is not of importance as it seems to depend largely on mois¬ 
ture and conditions of growth and frequently we find specimens even. 
Stipe; solid in all species save admirabilis which has hollow st ; pe; smooth 
or fibrillose in all species excepting, granularis with velvety stipe, and tomento¬ 
sulus somewhat pubescent; tortus has a conspicuously twisted stipe, (see photo¬ 
graph.) 
Habitat; admirabilis, granularis and longistriatus grow on logs; cervinus 
both on logs and in the ground, usually the latter; the remainder of the species 
grew in the ground. ' Peck gives the habitat of tomentosulus and nanus ‘'decay¬ 
ing wood ” The only specimens we ever met grew in the ground. 
Spores; the spores do not afford any good character to distinguish the species 
we have met, as in all they are globose or almost globose and about 5 me. in dia¬ 
meter. 
24—PLUTEUS CERVINUS. 
Pileus fleshy, convex then expanded, obtuse, even, gla¬ 
brous, but appearing fibrillose, the cuticle at first continuous 
and sometimes slightly viscid. Gills free, white then flesh 
colored. Stipe stout, solid, fibrillose or smooth. Spores 
subglobose, 5-6 me. 
This is the most frequent species we have, not only at Cincinnati, but it 
seems to be common in most localities. Its usual color is cinereous or grayish or 
blackish brown. We have pure white specimens (var. alba, Pk.) in our collection 
from Prof. Bart, but the white form does not occur with us. Usually the speci¬ 
mens are more even and expanded than the photograph we distribute, which 
corresponds closely to the form called eximius in Europe. Slugs are fond of this 
species and it can be seen that a slug has eaten the cuticle of the specimen 
photographed. Fries’ description (usually followed) describes the cuticle as after- 
. wards broken into fibrils or scales, but that does not accord to our observations. 
The appearance of the cuticle is very deceptive. It seems to be fibrillose to the 
eye, bat under a glass distinct fibers cannot be made out. In Europe the plant 
is stated to grow on logs and stumps. With us, while it so occurs, we most 
frequently find it in loose soil in the woods. 
25— PLUTEUS CERVINUS, (SCALY FORM.) 
Notwithstanding the usual description of pileus, “after¬ 
wards broken into fibrils and scales” we have only met this 
condition once which we thought was so unusual as to merit 
a photograph._ 
26— PLUTEUS CERVINUS, VAR VISCOSUS. 
The normal character of the cuticle of the species is 
slightly viscid in wet weather, but the specimens we collected 
and photographed were exceedingly viscid. They also dif¬ 
fered from the normal form in their lighter color, flesh much 
thicker at the disk and thin at the margins, and cuticle not 
appearing fibrillose. It is close to petasatus, but differs how- 
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