238 
The following is the arrangement proposed by Reinke. The 
symbiotic algae and fungal affinities are deduced from a consid- 
eration of previous papers. 
The results plainly show that much 
is yet to be done in the investigation of the lichen-algae and 
in the study of the relationship of lichens to fungi. 
I, CONIOCARPI. 
(a) Caliciacet, 
1. Mycocalicium. 
2. Calicium. 
3. Coniocybe. 
(4) Acoliacet. 
1. Acolium. 
2. Pyrgillus. 
3. Tylophoron. 
4- Tholurna. 
5. Acroscyphus. 
6. Pleurocybe. 
7. Sphaerophoron, 
II. DISCOCARPI. 
A. GRAMMOPHORL. 
(2) Graphidacei. 
1. Melaspilea. 
2. Arthonia. 
3. Lecanactis, 
4. Placographa. 
5. Platygrapha. 
6. Pachnolepia. 
7- Opegrapha. 
8. Graphis, 
g. Glyphis. 
10. Chiodecton. 
11. Schizopelte. 
12. Dendrographa. 
13. Dirina. 
14. Rocella. 
_ 15. Combea, 
(4) Xylographacet, 
1. Xylographa. 
B. LECIDIALES. 
(a) Gyalectacei, 
1. Coenogonium, 
2. Gyalecta, 
3. Jonaspis. 
(6) Lecideacet, 
1, Lecidea. 
2. Biatora. 
5: Sphaerophoropsis. 
. Toninia. 
LICHENES. 
Symbiotic Algae. 
No algae. 
Pleurococcus. 
sé 
Pleurococcus, 
“ 
66 
sé 
te 
sé 
“ 
Chroolepus. 
6 
Protococcus, 
Chroolepus, 
ee. - 
Pleurococcus. 
Cladophora. 
Protococcus. 
Chroolepus, 
Chroolepus, 
Pleurococeus. 
“ 
“ 
Protococcus. 
Gloeocystis. 
Approximate fungal affini- 
ties. 
Fatellariacet. 
(Protocaliciacet.) 
Fatellariacet. 
(Protocaliciacet.) 
Hysteriacet, 
Mycomelaspilea. 
Mycarthonia. 
Patinella. 
Mycoplacographa. 
Hysterium. 
fHysteriacet, 
Patellariacet. 
( Stictideae.) 
Patellariacei. 
Patinella, 
Mycobacidea. 
