ronata. The above will form one, or two, genera, according to
taste.

In the following plants we find no perithecia in the ripe
specimens, hence of course they will in time be considered a
genus. We believe there are two distinct differences between the
few species we know, corresponding with the old ideas of Bovista
and Lycoperdon in the puff balls. Camillea Sagraena and C.
poculiformis, with two divisions of the gleba, a fertile and a
sterile portion, and Camillea Bomba and C. globosa (?) with
homogenous gleba. The species Camillea Sagraena differs from the
other in having the fertile portion composed largely of spores
(scanty in others) and in having part of the sterile portion of
uncolored hyphae. Of course, it will form a "genus." Thus the
genus Camillea can be easily divided into five "genera" and we
make the suggestion for the benefit of those engaged in breaking
up the old genera, and proposing new names to which to add their
own. Who will rise to the occasion?

* * * * *

THE GENUS THAMNOMYCES.

This is included in Saccardo as part of Xylaria, but we feel is well
entitled to generic rank. It was proposed by Ehrenberg in 1820 for a
curious species collected in Brazil. The genus differs from Xylaria in
having the fruiting bodies on the ends of branches, which in one
species are dichotomous, or in the other two species sessile or
subsessile and borne on a slender rhachis. There are conflicting
accounts of the structure of these bodies. The original, by Ehrenberg,
represents them as hollow bodies, with the perithecia imbedded in the
walls. That also is as shown by Cooke and is the usual idea. Moeller, on
the contrary, represents each body as a perithecium, and our examination
confirms Moeller's view. If Moeller's account is true, as it seems to
be, it is a strong reason why Thamnomyces should not be classed with
Xylaria.

The usual Xylaria has a white, sterile, central portion known as the
stroma, bearing a carbonous crust. The perithecia are generally imbedded
in the outer portion of the stroma, the mouths opening through the
carbonous crust. The walls of the perithecia are carbonous, and
confluent with the crust. The genus Thamnomyces has a slender stem,
entirely carbonous. This seems to have been the main difference between
it and Xylaria in the old classification, but the character is
fallacious.

The