39 ERYTHEA. 
96. Lecanora polytropa (Ehrh.) var. illusoria, Ach. L, 
varia, var. polytropa, Tuck. Syn. i.192p.p. On rocks, Yellow- 
stone Park. 
27. Lecanora symmicta (Ach.) Nyl.; Tuck. Syn. i. 192, 
p.p. Thallus red on application of calcium hypochlorite. 
On dead wood, Sitka. 
98. Lecanora hypoptoides, Nyl. in Flora, 1887, 371. On 
dead wood, Yellowstone Park. 
29. Lecanora pallescens (L.) Ach.; Tuck, Syn. i. 196. 
On bark, Sitka. 
30. Lecanora coarctata (Sm.) Ach.; Tuck. Syn. i. 15. 
On rocks, Yellowstone Park. 
31. Ccenogonium interpositum, Nyl.; Tuck. Syn. i. 258. 
On twigs of coniferous trees, Monterey, Calif. 
32. Lecidea meiocarpa, Nyl. in Flora, 1876, 577. On 
cones of Cypress, Monterey, Calif. 
33. Lecidea sanguineo-atra (Ach.) Nyl.; Tuck. Syn. ii. 21, 
f. corticola. On twigs of coniferous trees, Monterey, Calif. 
34. Lecidea myriocarpa (DC.) Nyl.; Tuck. Syn. ii. 97. 
On cones of Cypress, Monterey, Calif. 
35. Opegrapha atrorimalis, Nyl. in Flora, 1867, 488. On 
cones and twigs of Cypress, Monterey, Calif. 
NEW SPECIES OF PACIFIC COAST PLANTS. 
By Tomas How8.Lu. 
Lepidium occidentale. Annual, erect, branching, 4 to 12 
inches high, hirsutulose below and puberulent throughout; 
leaves 1 to 3 inches long, the lower bipinnatifid with obovate 
to oblanceolate segments, reduced above to linear bracts; 
petals white, conspicuous, obovate, obtuse, narrowed below 
to a very short claw, longer than the obovate sepals; stamens 
4 about equalling the petals; pods orbicular, 1} lines wide, 
on slender widely spreading pedicels; style very short; 
stigma capitate. 
