110 CONTRIBUTIONS FROM THE 
Podetia always partly or wholly decorticate. 
Tips of podetia often perforate when not cup-bearing.... 18. 
Tips of podetia not perforate. 
Podetia not cup-bearing. 
Podetia variously decorticate and sorediate........ 22. 
Podetia wholly decorticate and sorediate, or corti- 
cate toward the base...........-..--.-------- 27e 
Podetia frequently cup-bearing. ...............---- 27. 
Podetia short; cups common.................----- 27a. 
Podetia longer. 
Cups common and well developed. 
Cups copiously and repeatedly proliferate... .. 27h. 
Cups not so copiously proliferate.............. 27d. 
Cups absent or poorly developed. 
Podetia much elongated... ................- 27¢ 
Podetia not so much elongated. 
Podetia still quite long... ......2.2......-- 27f. 
Podetia shorter. 
Podetia quite stout and not often squamu- 
los@. 2.2... 2s 27g. 
Podetia more slender and more frequently 
squamulose.............---2222----- 
Podetia shorter. 
Podetia very short. 
Podetia abortive, decorticate. ...................2.0.-. 16 
Podetia always evident, partly decorticate............-. 17. 
Podetia somewhat longer. 
Podetia not cup-bearing. 
Podetia corticate throughout. 
Podetia simple or branched toward the apex........ 20. 
Podetia freely branching, often from the base........ 21 
Podetia decorticate, at least toward the top............ 28a 
Podetia cup-bearing, at least sometimes. 
Cups not very commonly present. 
Cups rarely and abortively present................- 29. 
Cups more often present... ........-.-..-.-.------ 28. 
Cups always present. 
Squamules of the primary thallus thinner and more 
incised. 
Podetia corticate throughout...........-.....-.-. 26. 
Podetia decorticate above...... 26a. 
Squamules of the primary thallus thicker and less 
incised, closely packed into a brownish or oliva- 
ceous crust. ........-.--.-.------+--+-----2- 22 eee 26b. 
o 
NATIONAL HERBARIUM. 
C’. cenotea. 
C’. decorticata. 
C. fimbriata subu- 
lata. 
C. fimbriata and 
subspecies be- 
low. 
C. fimbriata sim- 
plex. 
(. fimbriata pro- 
lifera. 
C. fimbriata radi- 
ata, 
C. fimbriata cor- 
nutoradiata, 
C. fimbriata nem- 
oxryna. 
C. fimbriata coni- 
ocraea, 
C. jimbriata apo- 
lepta. 
C. caespiticia, 
C. delicata. 
C. mitrula. 
C’. cartosa. 
C. pityrea 
acuta, 
sub- 
C’. botrytes. 
C. pityrea. 
Q 
”. pyxidata. 
C. pyxidata 
chloro phaea. 
C. pyxidata 
pocillum. 
