94 FUNGI. 
Agaricinit. In many cases the stem is suppressed. The sub- 
stance is fleshy in Boletus, but in Polyporus the greater number 
of species are leathery or corky, and more persistent. The 
basidia, spicules, and quaternate spores agree with those of 
Agaricini.* In fact there are no features of importance which 
relate to the hymenium in any ordcr of Hymenomycetes (the 
Tremellini excepted) differing from the same organ in Agaricini, 
unless it be the absence of cystidia. 
Hypnet.—Instead of pores, 
in this order the hymenium 
| is spread over the surface of 
spines, prickles, or warts.} 
AvricuLaRini.—The hyme- 
nium is more or less even, 
and in— 
Cravariti the whole fungus 
is club-shaped, or more or 
less intricately branched, with 
Fic. 6.—Hydnum repandun, the hymenium covering the 
outer surface. 
TREMELLINI.—In this order we have a great departure from 
the character of the substance, external appearance, and internal 
structure of the other orders in this family. Here we have a 
gelatinous substance, and the form is lobed, folded, convolute, 
often resembling the brain of some animal. The internal struc- 
* It is not intended that the spores are always quaternate in Agavicini, though 
that number is constant in the more typical species. They sometimes exceed 
four, and are sometimes reduced to one. 
+ The species long known as Hydnum gelatinosum was examined by Mr. F. 
‘Currey in 1860 (Journ. Linn. Soc.), and he came to the conclusion that it was 
not a good Hydnwm. Since then it has been made the type of a new genus 
(fydnoglea B. and Br. or, as called by Fries, in the new edition of ‘‘ Epicrisis,” 
Tremellodon, Pers. Myc. Eur.), and transferred to the Tvemellini. Currey says, 
upon examining the fructification, he was surprised to find that, although in its 
external characters it was a perfect Hydnum, it bore the fruit of a Tremel/a. 
If one of the teeth be examined with the microscope, it will be seen to consist of 
threads bearing four-lobed sporophores, and spores exactly similar to Z'remella. 
It will thus be seen, he adds, that the plant is exactly intermediate between 
Llydnei and Tremellini, torming, as it were, a stepping-stone from one to the other. 
