132 



THIv CACTAUCAK. 



roundrd; areok-s about i cm. apart, large, covered with curly yellow wool, becoming white; radial 



spines s tn io. (i nun. to i cm. long, spreading, stifT, sharp, amber-yellow to brown; central solitary, 

 siioii'^iT and longi-r 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. 



Ditlribntion: Western Argentina. 



This species was named for Edward Spach (1801-1879). 



Illustrations: Monatsschr. Kakteenk. io: 93; 

 Rep. Mo. Bot. Card. 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. 191. Trichocereus pasacana. 



FIG. lyo. Trichucereus spachianus. 



4. Trichocereus lamprochlorus (Lemaire). 



Cereus lamproclilorus Lemairc, Cact. Aliq. Nov. 30. 1838. 



Cereus nitem. Salm-Dyck, Allg. Gartcnz. 13:354. 1845. 



EchhiiHcreits lamprochlorus Riimpler in Forster, Handb. Cact. ud. ;. 831. 1885. 



Echinopsis lamfrochlora 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 io 

 to 17, low and rounded; radial spines 1 1 to 14, acicular to subulate, 8 to io 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. 



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



