86 PRINCIPLES OF BOTANY, ETC. 
.. Three-rowed, (triseriales), when twe shora 
cills stand between two long ones. 
c. Br anched, (ramosa), when several gills 
unite ia one. 
d. Decurrent, (decurrentes), when the gills 
run down the stalk. 
e. Venous, (venose), when the gills are so 
small that they appear to be only raised 
veins, as in Agaricus chantarellus. 
The pores, ( oy when on the under side 
wee the pileus there are very small holes, as 
if made with the point of a needle, fig. 293. 
These are peculiar to the Boleti. ) 
9. The prickles, (aeulet S. echini), ' are raised pro- 
jecting points, in which, as in the pores, are 
contained the or gans of generation. They 
are peculiar to the genus Hydnum, fig. 224. 
«. The warts, ( papilla), are small, rela pro- 
tuberances that appear on the under surface, 
and likewise contain the organs of genera, 
tion*. 
§ 40. 
The cover, (indusium), in the Filices is a thin 
membrane which covers the seeds or the flowers. 
It pr esents the following kinds : 
* Some fungi have a very different appearance; some want 
the pileus, or are of a singular form without stalk. Their 
figure must therefore be described, as whether they are round, 
( globosus), fig. 7) cup- “shaped RO gieuaniais s. seyphiformis), 
fig. 254, Sco | 
1. Flat, 
