16 
Journal of Mycology 
[Vol. 9 
larger specimens of C. ravenelii. In fact, it might be said, as 
far as the size is concerned, in these forms which might be 
termed intermediate, there is no difference. Yet, with the number 
of the plants mixed as they were in the collection, after having 
studied a few of each kind, I was able to separate the remainder 
into two lots and all of those I examined thus separated by the 
eye, agreed in microscopic characters with those which had for¬ 
merly been examined representing each species. The specimens 
of the same size in the two species do show, even in the dry 
specimens, some slight differences, which can be seen better than 
described. In the first place the inner peridium of C. ravenelii 
is lighter in color than that of C. microsporum, although in some 
cases there is scarcely any difference. In the second place, the 
mouth of C. ravenelii is not quite so prominent as that in C. 
microsporum. In the latter, the teeth are larger, longer, and as 
far as I have examined, are only vermilion colored on their inner 
faces. In C. ravenelii, however, in many specimens, the outer 
face of the teeth is vermilion as well as the inner face. In some 
specimens, however, this is not the case, only the inner face is 
vermilion in color, but then as above stated, the teeth are usually 
not so prominent. This comparison has been made only with 
the specimens of the two species from Tennessee. All of the 
specimens which I have collected in North Carolina were much 
lighter in color. All of these show the less prominent teeth, 
and in many specimens the teeth are vermilion color without and 
within. 
The specimens of C. ravenelii from Tennessee resemble very 
much Calostoma lurida (Berk.) Massee from Australia, (Ann. 
Bot. Vol. 2, p. 43-44, figs. 19-20, 1888.) The resemblance is 
shown in the size of the plant and general size of the spores, and 
in the fact that the exoperidium breaks up into small blackish 
granules over the middle and lower portion. In C. lurida, how¬ 
ever, there is no vermilion color. The inner faces of the teeth 
as well as the edges being black. 
This new species should be looked for and carefully studied 
in the field in the fresh condition. It is quite likely that still 
additional characters might be observed. The following pre¬ 
liminary diagnosis will serve to characterize the species: 
Calostoma microsporum Atkinson n. sp. Plants 4-7 cm. 
high, foot stalk 3-6 cm. by 1-2 cm., cylindrical or ventricose or 
enlarged below, sometimes compressed, rarely two foot stalks 
joined throughout the entire length. Peridium oval, 10-15 mm. 
broad; teeth 5-7, prominent, vermilion colored on their inner 
faces; exoperidium separating into numerous small hard adherent 
warts, covering the middle and lower surface of the endoperi- 
dium, usually entirely separating from the upper surface leaving a 
smooth area on the inner peridium around the mouth. Spores 
white, smooth, oblong, some rarely elliptical, 6-10x3.5-5 ju. Pro- 
