160— Note 15—POLYS ACCUM. 
We do not adopt a recently substituted name Pisolithus for this 
genus for reasons similar to those offered for not adopting Calostoma 
(see Note 3.) 
161— Note 16—TULOSTOMA. 
Up to the present time we have been unable to get a clear idea 
of our native species of Tulostoma. We thought we had our speci¬ 
mens straightened out but the European determinations have com¬ 
pletely upset our views. We are still working on the matter and in 
the meantime are anxious to procure all the material we can relating 
to the genus. We have in this country a great many more Tulostomas 
than is generally supposed. Miss Violetta White, of New York, has 
recently published a paper on the genus, in which she describes seven¬ 
teen species, only two of which occur in Europe. If this is the case 
Tulostoma is an exception to all other American genera. 
162— Note 17—GEASTER SACCATUS. 
We think there are two distinct plants indiscriminately known 
in this country (and both have been so determined at first for me in 
Europe) as Geaster saccatus. We have 
been very much puzzled over the matter, 
but feel that it is now straightened out 
thanks to advice from Bresadola. Geaster 
saccatus is the little plant that grows so 
common over leaf mold in the woods. It 
is globose in its unexpanded form. The 
other plant that has been known in our 
countv as G. saccatus is Geaster lageniformis 
(see No. 167, Fig. 44) 
Fig. 40. 
Geaster saccatus. 
163— Note 18—CATASTOMA CIRCUMSCISSUM. 
Our thanks are due to B. O. Eougyear, of Michigan, for calling 
attention to a spongy layer shown in our illustra¬ 
tion, which lies between the outer and the inner 
peridiums. This layer had been entirely overlooked 
by us and apparently by all who have written on the 
plant but it is quite distinct not only on all the plants 
Mr. Longyear sends but in all the collections in our 
museum. We think it is an overlooked character. 
Fig. 41. 
Catostoma circumscissum, 
164— Note 19—CATASTOMA SUBTERRANEUM. 
This specimen we received from Hungary under the name 
Bovista debreceniensis but it is identical with the plant that we have 
in this country under the name Catastoma subterraneum. We do not 
know which name has priority not having taken the trouble to look 
the matter up. For our part we prefer adopting Prof. Peck’s name 
rather than the uncouth name proposed for it when described in 
Europe. 
78 
