140 



THK CACTACEAE. 



Type locality: Coquimbo to Paposo, Chile. 



Distribution: Along the coast of the province of Coquimbo, Chile. 



Cereus chilensis nigripilis (Hirscht, Monatsschr. Kakteenk. 8: 159. 1898) doubtless 

 belongs here. 



Illustrations: Monatsschr. Kakteenk. 11:27; Schumann, Gesamtb. Kakteen Nachtr. 

 f. 3, both as Cereus nigripilis. 



Figure 201 is from a photograph of a plant brought by Dr. Rose from the Botanical 

 Garden at Santiago, Chile, in 1914; figure 202 is from a photograph taken by Dr. Rose at 

 Coquimbo, Chile, in 1914. 



13. Trichocereus terscheckii (Parmentier). 



Cereus terscheckii Parmentier in Pfeiffer, Allg. Gartenz. 5: 370. 1837. 

 Cereus fercheckii Parmentier, Hort. Beige 5: 66. 1838 (fide Index Kewensis). 

 Cereus julvispinus Salm-Dyck, Cact. Hort. Dyck. 1849. 46. 1850. 

 Pilocereus terscheckii Rumpler in Forster, Handb. Cact. ed. 2. 688. 1885. 



At first columnar, in age becoming much branched, 10 to 12 meters high; trunk woody, up to 

 4.5 cm. in diameter; branches 1 to 2 dm. in diameter; ribs 8 to 14, prominent, 2 to 4 cm. high, obtuse; 

 areoles large, 1 to 1.5 cm. in diameter, felted, 2 to 3 cm. apart; spines 8 to 15, subulate, yellow, up 

 to 8 cm. long; flowers very large, 15 to 20 cm. long, 12.5 cm. broad; inner perianth-segments oblong, 

 7 cm. long, acute, white; scales on the ovary and flower-tube ovate, mucronate-tipped, their axils 

 tilled with long brown wool. 



Fig. 203. — Trichocereus terscheckii. 

 a, flower; b, fruit. X0.4. 



Fig. 204. — Trichocereus terscheckii. 



Type locality: Argentina, but no definite locality cited. 



Distribution: Northern Argentina. 



This is a very large cactus, called in Argentina cardon grande. It has frequently been 

 confused with another species, T. pasacana, of the same region, but it is more branched, 

 with fewer ribs, different spines, and larger flowers. 



