172 General Notes. 3 [ March, 
4. stellaris (Z.), Myl., and var. hispida, Fr. On rocks and bark of 
trees. 
5. obscura (Hhrh.), Nyl., and var. ciliata, Tuckerm., and var. eryth- 
rocardia, Zuckerm., and var. adglutinata, Scher. On rocks; 
the latter var. abundant on currant bushes (Ribes rubrum). 
9. UMBILICARIA, Hoffm. 
1. pustulata (Z.), Hoffm. According to my observations, this spe- 
cies is most common on high rocks in river bottoms, where it 
is exposed to the water in times of freshets. 
2. Dillenii, Tuckerm. Same habitat as above. 
3. Muhlenbergii (Ach.), Tuckerm. On rocks. 
10. Strora (Schreb.), Delis. 
1. crocata (Z.), Ach. On trunks and rocks. 
2. quercizans (Michx.), Ach. On rocks; not common. Killing- 
worth, F. W. H.; Orange, F. W. H. 
3. pulmonaria (Z.), Ach. On trunks of trees. 
4. glomerulifera (Lightf.), Delis. On rocks. 
11. NEPHROMA, Ach. 
1. levigatum, Ach. Killingworth and Orange; F. W. H. Not very 
common. 
12. PeLTIGERA (Hoffm.), Fée. 
1. aphthosa (L.), Hoffm. Moist, mossy banks, among woods. 
2. canina (L.), Hoffm., and var. spuria, Ach. On damp ground. 
3. polydactyla (Neck.), Hoffm. Damp ground in woods, ete. 
4. rufescens (Neck.), Hoffm. Damp ground in woods, ete. 
13. Pannarta, Delis. 
1. lanuginosa (Ach), Koerb. Killingworth; F. W. H. Trunks and 
earth. 
2. lurida (Mont.), Nyl. On the ground and rocks. 
3. tryptophylla, Ach., Mass. On basalt; Hampden; Prof. Eaton. 
4. microphylla (Sw.), Del. Trunks, ete. 
5. leucosticta, Zuckerm. Trunks, banks, etc. Killingworth; F. 
W. dds 
6. 
molybdwa (Pers.), Tuckerm., var. cronia, Nyl. Trunks, rocks, 
ete. Killingworth; F. W. H. 
14. EPHEBE, Fr. 
pubescens (Ach.), Fre West Rock; Prof. Eaton. 
15. Cottema (Hoffm.), Fr. 
1. flaccidum, Ach. Bark, especially of the cedar (J. Virginiana). 
2. nigrescens (Huds.), Ach. Same habitat as above. 
16. LEPTOGIUM, Fr. 
1. lacerum (Sw.), Fr. Moist rocks, ete. 
2. pulchellum (Ach.), Nyl. Moist rocks, earth, etc. 
3. tremelloides (Z.), Fr. Earth and rocks. 
4. chloromelum (Sw.), Nyl Moist rocks. 
