142 



THE CACTACEAK. 



The flowers of this species differ from those of typical Trichocereus in that they are very 

 slender, bent near the base, and have short perianth-segments. 



Figure 205 is from a photograph taken by Dr. Rose at Arequipa, Peru, in 1914; figure 

 206 shows the flower and figure 207 the fruit of the plant photographed. 



15. Trichocereus huascha (Weber). 



Cereus huascha Weber, Monatsschr. Kakteenk. 3: 151. 1893. 



Cereus huascha flaviflorus Weber, Monatsschr. Kakteenk. 3: 151. 1893. 



More or less cespitose, forming clumps 8 to 20 dm. broad; stems 8 to 16 dm. high, cylindric, 

 4 to 5 cm. in diameter; ribs 12 to 18, low, rounded; areoles approximate, often only 5 to 7 mm. 

 apart; spines numerous, acicular, unequal, the longest often 5 to 6 cm. long, yellowish to brown; 

 flowers very variable in color and size, red to yellow, 7 to 10 cm. long, broadly funnelform; scales 

 on the ovary bearing long brown hairs. 



Type locality: Yacutala, Catamarca, Argentina. 



Distribution: Northern Argentina. 



Cereus huascha flaviformis Weber (Monatsschr. Kakteenk. 3 : 136. 1893) is only a name. 



Figure 208 shows a flower and figure 209 a fruit collected by Dr. Shafer near Andal- 

 gala, Argentina, in 1916; figure 210 is from a photograph of the plant from which the flowers 

 and fruit were taken. 



Fig. 210. — Trichocereus huascha. 



16. Trichocereus candicans (Gillies). 



Cereus candicans Gillies in Salm-Dyck, Hort. Dyck. 335. 1834. 

 Cereus candicans tenuispinus Pfeiffer, Enum. Cact. 91. 1837. 

 Cereus gladiatus Lemaire, Cact. Aliq. Nov. 28. 1838. 

 Cereus candicans robustior Salm-Dyck, Cact. Hort. Dyck. 1849. 43. 1850. 

 Echinocereus candicans Riimpler in Forster, Handb. Cact. ed. 2. 832. 1885. 

 Echinocereus gladiatus Riimpler in Forster, Handb. Cact. ed. 2. 833. 1885. 

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

 Cereus candicans courantii Schumann, Gesamtb. Kakteen 70. 1897. 

 Cereus candicans gladiatus Schumann, Gesamtb. Kakteen 70. 1897. 



Cespitose, forming large clumps often 1 to 3 meters in diameter; joints erect or spreading, 6 

 dm. long or less, 14 cm. in diameter or less, rounded at apex; ribs 9 to n, low, rounded or obtuse; 

 areoles large, white-felted when young, 2 to 3 cm. apart; spines subulate, brownish yellow, more or 

 less mottled; radial spines 10 or more, more or less spreading, unequal, the longest 4 cm. long; 



