90 ERYTHEA. 
100. ERIGERON PETROPHILUS, Greene, Pittonia, i. 218. 
In crevices of rocks on the northward slope; more plentiful 
here than in the original stations about Mount St. Helena, 
and of a more pubescent type. It is an estival rather than 
vernal species; and such are all its nearest allies. 
101. Microrus Catrrornicus, Fisch. & Mey. Ind. Sem. 
Petr, ii. 42. 
102. Wyernia HELENIOIDES (DC.), Nutt; Gray, Pl. 
Fendl. 82. 
103. Hexranruus Cauirornicus, DC. Prodr. v. 589. Only 
a poor growth of this, at the Joaquin Springs. 
104. HentanrHenta Canirornica, Gray, Pac. R. Rep. iv. 
103. Less frequent here than northward, but not rare. 
105. Lerprosyne ; one of the annual species of 
this mere subgenus of Bidens or Coreopsis. 
106. Manta pissirirtora, Torr. & Gray, Fl. N. Am. ii. 
405. Very common, in the usual shady places on northward 
slopes. 
107. Manta Hispipa, Greene, Pittonia, ii. 217. 
108. Madia exigua. Sclerocarpus exiguus, Smith, in 
Rees Cycl. xxxiii (1816). Harpeecarpus exiguus, Gray, Bot. 
Mex. Bound. 101 (1859). Madia filipes, Gray, Bot. Calif., 
ete. 
109. Hemizonta Hirrmannt, Greene, Bull. Torr. Club, 
ix. 15. Originally from the mountains of Kern Co.; but re- 
discovered a few years since by Mr. Chesnut on Mount Diablo. 
110. Hemizonta truncata (DC.), Gray, Syn. Fl. 311. 
111. Lagopuyitia ramosissima, Nutt. Trans. Am. Phil. 
Soe. vii. 391. 
112. BLEPHARIPAPPUS PLATYGLOssus (F. & M.), Greene, 
Pitt. ii. 246. 
