4 PRINCIPLES OF BOTANY, ETC. 
5. Permanent, (persistens), when it is found dur- 
ing the whole existence of the fungus. 
6. Fugacious, ( fugax), when at the perfect deve- 
fopement of the fungus the ring disappears. 
7. Cobweb-like, (arachnoideus), when the ring is 
composed of a very white web. Rings of this kind 
are often very evanescent*. 
§ 39. ; 
The cap, (ileus), is the top of the fungus, in 
general shaped like a plate or bonnet, and supported 
by the stalk, (sties), In this body are situated the 
organs of generation. ‘There are the following kinds 
of it. 
1, Flat, (planus), forming a plane expansion, 
fig. (223.2947 and 225: 
2. Round, (convexus), which is convex above. 
8. Hollow, (conmcavus), where there 1s a depres- 
sion on the upper surface, fig. 6. 
4. Bossed, (umbonatus), when there is a promi- 
nent point in the centre, fig. 4. 
5. Bell-shaped, (campanulatus), when it 1s very 
convex above, and spreads wide below hke a bell, 
as in Agaricus fimetarius. | 
G. Viscid, (viscidus), when the upper surface 1s 
covered with a clammy exudation. 
* The Ring is properly a prolongation of the membrane 
of the pileus, part of which remains upon the stalk; but in 
some fungi it does not separate from the rim of the pileus, but 
from the stalk, and remains attached to the aia in longer 
or shorter portions according to the species. ‘ 
by @ Vie 
fo WCALyV, 

