sci, such as the Hyphomyceteae and
the Melanconieae. This arrangement is in accordance with M. C. Cooke's
published views on the subject, except in the case of the spore bodies
of the Melanconieae, which he prefers, for well-defined reasons, to call
sporules.

In accordance with these limitations, the terms _spermatia_,
_stylospores_, and _clinospores_ are merged in _sporule_.

Other terms appropriate to their development are employed to designate
the spores of Uredineae, Phycomyceteae, etc.

STUDENT'S HAND-BOOK
OF
MUSHROOMS OF AMERICA

EDIBLE AND POISONOUS.

BY
THOMAS TAYLOR, M. D.

AUTHOR OF FOOD PRODUCTS, ETC.

Published in Serial Form--=No. 4=--Price, 50c. per number.

WASHINGTON, D. C.:
A. R. Taylor, Publisher, 238 Mass. Ave. N.E.
1897.

Copyright, 1897, by
Thomas Taylor, M. D.,
and
A. R. Taylor.

GASTEROMYCETES.

Hymenium more or less permanently concealed, consisting in most cases of
closely packed cells of which the fertile ones (the basidia) bear naked
spores on distinct spicules, exposed only by the rupture or decay of the
investing coat or peridium. Berkeley's Outlines.

This family has been subjected to numerous revisions since the days of
Fries, when its structural characteristics were not so well understood
as at present.

Montagne and Berkeley are credited with being the first to show the true
structure of the hymenium in the puff-balls, as well as to demonstrate
the presence of basidia. This important discovery led to the correlating
of the Gasteromycetes with the Hymenomycetes under the common title
Basidiomycetes, both having the spores borne upon basidia. The two
families still remained distinct, however, not only because of the
dissimilarity in their external features but principally on account of
the difference in the disposition and character of the hymenium.

In the Hymenomycetes the hymenium is exposed to the light from the
first, and the spores drop from the basidia as they mature; whereas in
the Gasteromycetes the hymenial pulp, or gleba, consisting