Feb. 1903] 
A New Series of Calostoma 
15 
colorless, 15-17 x 8-9.” While the spores agree, therefore, in 
the two species in being smooth, and elliptical to oblong, or oblong 
to elliptical, there is a distinct difference in the size. The spores 
of C. ravenelii, in the specimens from Tennessee and also North 
Carolina, which I have examined, vary a great deal in size and 
also in shape, while those of C. microsporum do not show such 
great variations. A study of a single mount from one specimen 
of C. ravenelii from Tennessee gives the following measurements 
for individual spores; 6x7, 6x17, 10x15, 10x21, 12x16, 
16 x 16, 15 x 18, 19 x 21. In a single mount of C. ravenelii from 
North Carolina the following measurements are taken: 6 x 7, 8 x 
10, 12 x 22, 5 x 20. The larger number of the spores, however, 
in both cases are elliptical, and measure from 10-16 x 5-7. In 
some specimens nearly all are elliptical. The specimens of C. 
ravenelii from North Carolina which I have examined are those 
collected by myself on September 17th, 1901, along the roadside 
between Burnsville and Spruce Pine, at an altitude of about three 
thousand feet. They were growing in clay soil which contained a 
large amount of mica particles intermixed. They were the first 
specimens I had ever seen, although I had collcted on the higher 
elevation at Blowing Rock, large numbers of Calostoma cinna- 
barinum during several seasons. At the time I collected the speci¬ 
mens of C. ravenelii it was raining hard. While returning from 
the Black mountains, a small patch of these plants growing by the 
roadside at once attracted my attention, and so different were they 
in size and in general appearance from C. cinnabarinum I felt they 
must be C. ravenelii. The spores were not studied until the aut¬ 
umn of 1902. These plants vary from 1-4 cm. high, the foot 
stalk from .5-3 cm. high. The dehiscence of the exoperidium is 
somewhat variable, in some specimens quite large patches sep¬ 
arate from the inner peridium only remaining slightly attached, 
especially toward the apex, the patches of the exoperidium often 
become entirely free, leaving a smooth area around the mouth. 
The middle and lower half of the inner peridium in these cases is 
then covered with a few large scaly warts, or in a few cases with a 
large number of smaller ones. In some specimens the entire 
endoperidium is covered, except here and there are exposed places 
where the outer peridium has cracked and become partially free. 
In the specimens from Tenessee of C. ravenelii, the plants vary 
from 2-4 cm. high, the foot stalk from 1-3 cm. long. Nearly all 
of the specimens show a smooth area over the upper part of the 
inner peridium around the mouth, while on the lower and middle 
part there is in almost all cases a large number of smaller warts. 
In C. microsporum, the gross characters of the plants re¬ 
semble very much those of C. ravenelii, except as stated above. 
On the average the foot stalk is longer, ranging from 3 cm. to 
6 cm. and the peridium is somewhat larger. The smaller speci¬ 
mens of C. microsporum, however, are very near in size to the 
