= 
ao = 
an 
gravelly earth, near the ocean; Mr. Bolander. The 
two central sporoblasts of the at first regularly quad- 
rilocular spore passing into four, and all the sporo- 
blasts broken at length into smaller ones. This in- 
teresting modification of the spore-type of Rinodina 
looks evidently beyond the quadrilocular condition. 
The genus is represented very commonly on the rocks 
and trees of California, mostly in states not widely 
divergent from the type of R. sophodes ; but no trace 
has appeared of R. Ascociscana (Lecanora, Tuck. 
Suppl. 2, p. 204.) 
PERTUSARIA pertusa (L.) Ach. sub Porina, var. areolata, 
Clement. Coast; Mr. Bolander. 
P, Wulfenii, DC., Nyl. Coast; Mr. Bolander. 
URcEOLARIA scruposa (L.) Ach., terricola. Coast; Mr. 
Wright. Rocky Mtns; Mr. Hall. Var. parasitica, 
Sommerf, Coast (on thallus of Cladonia) Mr. Bolan- 
der. 
THELOTREMA lepadinum, Ach. Oregon; Scouler, 
Tribe II. LECIDEACEI, Fr. 
Fam, 1. Cladoniei, Th, Fr. 
STEREOCAULON tomentosum, Fr. Rocky Mountains ; 
Mr. Bourgeau. Mr. Hall. . 
S. paschale (L.) Fr., f. Coast; Mr. Bolander. 
PitopHorus acicularis (Ach.) Th. Fr. N. W. Coast ; 
Menzies. Rocky Mountains; Hook. Herb. 
