r cells,
which acquire a comparatively large size. These cells are filled with
a protoplasm, to which the plant owes its orange colour. When they
have attained their normal dimensions, they elongate at the summit
into two, three, or four distinct, thick, obtuse tubes, into which the
protoplasm gradually passes. The development of these tubes is unequal
and not simultaneous, so that one will often attain its full
dimensions, equal, perhaps, to three or four times the diameter of the
generative cell, whilst the others are only just appearing. By
degrees, as each tube attains its full size, it is attenuated into a
fine point, the extremity of which swells into a spheroidal cell,
which ultimately becomes a spore. Sometimes these tubes, or spicules,
send out one or two lateral branches, each terminated by a spore.
These spores (about .006 to .008 _mm._ diameter) are smooth, and
deposit themselves, like a fine white dust, on the surface of the
_Tremella_ and on its matrix. M. Leveille[O] was of opinion that the
basidia of the Tremellini were monosporous, whilst M. Tulasne has
demonstrated that they are habitually tetrasporous, as in other of the
Hymenomycetes. Although agreeing in this, they differ in other
features, especially in the globose form of the basidia, mode of
production of the spicules, and, finally, the division of the basidia
into two, three, or four cells by septa which cut each other in their
axis. This division precedes the growth of the spicules. It is not
rare to see these cells, formed at the expense of an unilocular
basidium, become partly isolated from each other; in certain cases
they seem to have separated very early, they then become larger than
usual, and are grouped on the same filament so as to represent a kind
of buds. This phenomenon usually takes place below the level of the
fertile cells, at a certain depth in the mucous tissue of the
_Tremella_.

Besides the reproductive system here described, Tulasne also made
known the existence of a series of filaments which produce spermatia.
These filaments are often scattered and confused with those which
produce the basidia, and not distinguishable from them in size or any
other apparent characteristic, except the manner in which their
extremities are branched in order to produce the spermatia. At other
times the spermatia-bearing surface covers exclusively certain
portions of the fungus, especially the inferior lobes, imparting
thereto a very bright