trichocereus. 



^33 



'ereus lamprochlorus salinicolus SpegazzinI (Anal. Mus. Nac. Buenos Aires 

 from southern Argentina, may belong here, but it is much south of the ra 

 3; C ereus chiloensis lamprochlorus Monville (Labouret, Monogr. Cact. 32 

 as a synonym. Echinocadus wangertii (I^abouret, Monogr. Cact. 326. 



'• 1853) is 

 1853) has 



synonym 



to this species 



specimens 



J 



4 



Afterward, Schumann referred 



specimen of this collection is now in the herbarium 



and has been used in drawing up the above description, together with plants and speci- 



Dr. Shafer at Andalgala, Argentina, in 1917 (No. 13). A cespitose 



mens 



procumbent stems is sometimes 



conspecific with it or distinct we have been unable to ascertain. 



Illustration: Monatsschr. Kakteenk. 26: 60, as Cereus lamp. 

 Fiffure 102 is from a ohotoe-raoh of nlants in flower, taken b 



Fig. 192 — Trichocercus lamprochlorus. 



5. Trichocereus pasacana (Weber). 



Pilocereus pasacana Riimpler in Forster, Handb. Cact. ed. 2. 678. 1885. 

 Cereus pasacana Weber, Monatsschr. Kakteenk. 3: 165. 1893. 



Plant often 6 to lo meters high, sometimes less than i meter, usually either simple or with few 

 branches and resembling a small Carnegiea gtganiea, sometimes with a number of branches from 

 the base, more or less club-shaped, 3 dm. in diameter near the top, when old spineless at base ; ribs 

 20 to 38, low, 2 cm. high; areoles large, approximate, sometimes touching one another; spines 

 numerous, rather variable on young plants; spines yellow, stiff, subulate, the longer ones 4 to 14 

 cm. long; on old plants, especially flowering ones, elongated, flexible, sometimes bristle-like, 10 to 

 12 cm. long, yellow or even white; flowers 10 cm. long, the ovary and tube covered with long brown 

 hairs; fruit globular, about 3 cm. in diameter; seeds small, dull black. 



Type locality: High valleys of Cordilleras of Catamarca and Salta, Argentina. 



Distribution: Argentina and Bolivia. 



This species is very characteristic of the high plains of northern Argentina and Bolivia, 



growing in valleys, but usually along clifTs and on rocky hillsides, and often forms 

 jnspicuous plant in the landscape. The woody trunks are used for making goat 

 corrals and rude huts. The fruit, which is said to be edible, is called pasacana. 



sometimes 

 the most c 



Illustrations: 



pasacana 



J^ 



