REVISION OF THE GENUS CEREUS MILL. 73 



XII. TRICHOCEREUS A. Berg. 



Ovary and tube with more or less densely imbricated acute scales, 

 from the axils of which rise long and curled or woolly hairs in great 

 profusion, but no bristles; sepaloid and petaloid perianth leaves numer- 

 ous; stamens numerous, in two groups; style as long or longer with 

 numerous stigmata. Fruit uncolored, roundish, scaly and hairy, with 

 the dried remains of the flowers more or less persistent. 



Flowers showy, nocturnal, white, yellowish or red, trumpet-shaped. 



Plate 8, f. 1-3. 



Chiefly Andean species : 



Cereus ( Trichocereus) andalga 

 C. (Trichocereus) Bridgesii Salm. 1. c. 107. — Bolivia. 

 C. (Trichocereus) candicans Gill. 1. c. 69. — Argentina. 

 C. (Trichocereus) chilensis Colla. 1. c. 61. — Chile. 

 C. ( Trichocereus) fascicularis Meyen. 1. c. 57. — Peru. 

 C. (Trichocereus} Huascha Web. 1. c. 70. — Argentina. 



Argentina. 



© 



C. ( Trichocereus) lamprochlorus Lam. 1. c. 60. — Argentina. 

 C. (Trichocereus) macrogonus Salm. 1. c. 115. — Ancles ? 

 G. (Trichocereus) nigripilis Phil. 1. c. Nachtr. 20. — Chile. 

 C. (Trichocereus) Pasacana Web. 1. c. 77. —Argentina. 

 C. (Trichocereus) pterogonus Lem. I.e. 152. — New Granada. 

 C. (Trichocereus) Spachianus Lem. 1. c. 67. —Argentina. 

 C. (Trichocereus) strigosus Salm. 1. c. 68. — Argentina. 

 C. (Trichocereus) thelegonus Web. 1. c. 78. — Argentina. 



The description of the flower of Cereus ?nacrogo?ius 



Schumann's M 

 ft f iir Kakteenk 



see 



Cereus andalgalensis Web. is the same as Cereus 

 Huascha Web. var. rubrijiora Web., as I have been 



informed by Weber himself. 



The genus JEJchinopsis comes so near to this subgenus 

 that there seems to be no obstacle, except for its seeds, to 

 reuniting it with Cereus, as done by Pfeiffer and Otto, and 

 by Bentham and Hooker (Gen. Plant. 1: 849). Cereus 

 candicans Gill, and C. lamprochlorus Lem., on the other 

 hand, have been considered by Weber as Echinopses. 

 Echinopsis obrepanda K. Sch., E. cinnabarina Lab. and 

 E. Pentlandii Salm, have been included by other authors 

 under E chinocactus . 



