16. L. liockii, (Fr.) r J'h. Fr. On rocks, Nantasket, 1874, and 
N. B., 1S77. 
17. L. fuscatil, (Schrad.) Th. Fr., b. rufescens, Th. Fr. On 
stones, N. B., 1S63; and on rails, Cuttvhunk Island, 1SS2, and Wey¬ 
mouth. A plant on old bricks, N. B., has a rosulate thallus, reach¬ 
ing one-quarter inch in diameter, but does not seem to difter other¬ 
wise. 
18. L. privigna, (Ach.) Nyl. On rocks. 
c. Clcivus, Kbr. On rocks. 1866. 
‘ 25 . RINODINA, Mass., Stizenb., Tuck. 
1. R. oreiilil, (Ach.) Mass. On rocks. Spermatia .005-6 mm. 
long. 
2. R. chrysomelteilil, (Ach.) Tuck. On boulder, Chepachet 
lane, which has since been broken up, 1868, and on stone in woods 
south of Allen street, 1878. Very rare. 
3. R. Ascociscana, Tuck. On trees and rocks, N. B. and Wey- 
mouth. Rare. 
4. R. sophodes, (Ach.) Nyl., Tuck. On trees and rocks. Sper¬ 
matia oblong, .004 mm. long. 
b. atrocinerea , Nyl. On rocks. 
b. confragosa , Nyl. On trees. 
e. exigua, Fr. On trees and rails, including the f. polyspora. 
Th. Fr. A plant referred by Tuck., Syn. I, p. 211, to R. con¬ 
stant. seems rather to belong here, but is remarkable for the very 
numerous spores in the thekes. 
Of a plant found only once at root of oak, 1874. Tuckerman re¬ 
marks in lift., that it a little counterfeits R. /sia/'aides (Born.) but is 
scarcely well separable from sophodes; and of another from Wey¬ 
mouth. 1874, that it shows another trait of sophodes, wanting to be 
squamulose. 
5. R. mi Ivina , (Wahl.) Br. and Rostr. On rocks. 
6. R. milliaria, Tuck. On trees and rails, 1874. Spermatia 
needle-shaped. Sent to Lojka with a considerable number of other 
specimens shortly before his death, but I cannot learn that the fascicle 
containing them was ever issued. 
7. R. constant, (Nvl.) Tuck. Oil trees. Spermatia minute. 
