132 



THE CACTACEAE. 



rounded; areoles about i cm. apart, large, covered with curly yellow wool, becoming white; radial 

 spines 8 to 10, 6 mm. to i cm. long, spreading, stiff, sharp, amber-yellow to brown; central solitary, 

 stronger and longer than the radials; all the spines later becoming gray; flowers about 20 cm. long 

 by about 15 cm. in diameter, white. 



Type locality: Argentina, but definite locality not cited. 



Distribution: Western Argentina. 



This species was named for Edward Spach (1 801-1879). 



Illustrations: Monatsschr. Kakteenk. 10: 93; 

 Rep. Mo. Bot. Gard. 16: pi. 8, f. 2, 3; Sunset Mag. 

 July 1915, p. 166; Schelle, Handb. Kakteenk. f. 18, 

 as Cereus spachianus. 



Figure 190 is from a photograph of a plant in the 

 collection of the New York Botanical Garden. 



Fig. 190. — 'Trichocereus spachianus. 



Fig. 191. — Trichocereus pasacana. 



4. Trichocereus lamprochlorus (L-emaire) . 



Cereus lamprochlorus Lemaire, Cact. Aliq. Nov. 30. 1838. 



Cereus nitens Salm-Dyck, Allg. Gartenz. 13: 354. 1845. 



Echinocereus lamprochlorus Riimpler in Forster, Handb. Cact. ed. 2. 831. 1885. 



Echinopsis lamprochlora Weber, Diet. Hort. Bois 471. 1896, as synonym. 



Columnar, simple or branching at base, 1.5 to 2 meters high, 7 to 8 cm. in diameter; ribs 10 

 to 17, low and rounded; radial spines n to 14, acicular to subulate, 8 to 10 mm. long; central spines 

 4, 2 cm. long; flowers funnelform, 20 to 24 cm. long; outer perianth-segments red; inner perianth- 

 segments white, 2.5 cm. long, acuminate. 



Type locality: Not cited. 



Distribution: Northern Argentina and, according to Riimpler, Bolivia. 



