1898.] NATURAL SCIENCES OF PHILADELPHIA. 395 



here reaches its northern limit, is elevated 2,500-3,500 metres 

 (8,000-11,800 feet). The flora presents a greater richness than lower 

 down, the region being protected from the cold winds, which blow 

 over the valley, by the forests of oak and pine and by the high hills 

 to the west and north. It is, therefore, warmer. 



CONIFERS. 



115. Pinus leiophylla Schlecht & Cham, in Linnsea, VI, (1832), 354; Biol. Centr. 



Amer. Bot., , III 187. 



Collected by a number of botanists in different parts of Mexico. 

 Peak of Orizaba, 7-9,000 feet (Linden) ; Pedregal and Canada de 

 Tizapan (Christy). Called "Pino;" "Ocotechino" by the Mexi- 

 cans. Eslava pedregal 8-10,000 feet, Aug. 31 (396). 



AMARYLLIDACE.ffi. 



116. Agave megalacantha Hemsl. Diag. PI. Nov. Mex., 3, 55 ; Tab. LXXXVIII, A. 

 Eslava pedregal, 9,000 feet, Aug. 31 (400). (Collected by 



Bourgeau here). 



CUPULIFERJE. 



117. Quercus reticulata Humb. Bonpl. Fl. ^Equin., II, 40, t. 86; Biol. Centr. Amer. 



Bot., Ill, 176. 



Collected in several parts of South Mexico. Peak of Orizaba, 

 8,000 to 10,000 feet (Liebmann) ; San Angel (Bourgeau), etc.; Es- 

 lava pedregal, 8-10,000 feet, Aug. 31 (394). 



LEGUMINOSJE. 



118. Lupinus sylvaticus Hemsl. Biol. Centr. Amer. Bot., I, 231. 



North and South Mexico, Valley of Mexico, Desierto Viejo (Bour- 

 geau). Eslava pedregal, 9,000 feet, Aug. 31. 



RHAMNACEJE. 



119. Ceanothus azureus Desf. Tabl. ed. II, 232; Biol. Centr. Amer. Bot., I, 199 ; 



Bot. Beg., t. 291. 



Recorded from a number of localities in Mexico, and collected by 

 Dr. Jose Ramirez at Eslava, 8,830 feet ; a very ornamental plant 

 in flower. " Sayolistle ; " " Cuaicuastle." Eslava pedregal, 10,000 

 feet, Aug. 31 (393). 



OROBANCHACE^J. 



120. Conopholis Mexicana A. Gray ex S. Wats, in Proc. Amer. Acad., XVIII, 

 (1882-83), 131. 



Really not distinct from C. Americana Wallr., which ranges from 

 New England to Michigan and Florida. Eslava pedregal, 9.000 

 feet ; parasitic on roots of oak. Aug. 31. 



