84 



TH^ CACTACKAK. 



J - 



to the towns and used for firewood. The flowers begin to appear late in October; the fruit 

 is eaten by animals, doubtless by birds, as all old fruits had large holes on one side, and no 



seeds remained. 



Plate XV, figure i, shows the top of plant collected by Dr. Rose at Antof agasta, 1914. 



3. Eulychnia acida Philippi, Linnaea 33: 80. 1864. 



Cereus acidus Schumann, Gesamtb. Kakteen Nachtr. 22. 1903. 



Plant various in habit, usually 3 to 7 meters high, with a definite trunk i meter long and then 

 more or less branching, forming a more or less rounded top, but sometimes without trunk, forming 

 a low mass i meter high or less, with branches often procumbent or ascending; ribs 11 to 13, broad 

 and low; spines various, nearly porrect, grayish in age but brownish when young, sometimes 20 cm. 

 long; flowers 5 cm, long, turbinate, 13 cm. in circumference at top; ovary and tube covered with 

 small, ovate, imbricating scales, fleshy at base but with acute, callous tips; Hmb somewhat oblique; 

 inner perianth-segments at first pale rose-colored, then white, 20 to 22 mm. long; throat very short, 

 covered with stamens; stamens white, i to 1.5 cm. long, included; style 2 cm. long, stiff, white, with 

 12 to 15 stigma -lobes; fruit fleshy, somewhat acid. 



Type locality: Near lUapel and Choapa, Chile. 



Distribution: From near Choapa to Copiapo, in western Chile. 



This species is called tuna de cobado by the natives, according to Philippi. 



This species was originally described from material obtained by Landbeck near Illapel 



:r 



A. ^ 





herbarium 



tiago. Dr. Rose, however, visited both Illapel and 

 Choapa in 19 14, and A^as able to decide definitely 

 upon the species described by Philippi. At both 



common 

 Dut from 



much 



\- 



1898), but 



4 ' 



123 



Fig. 123 

 Fig. 124 



124 



Flower of Rulychnia acida. 

 Flower of Eulychnia castanea. 



X0.7. 

 X0.7. 



to distinguish the two readily. 



It is sometimes referred to as Cere\ 

 acidiis (Monatsschr. Kakteenk. 8: 159. 

 the name has never been formally published. 



Figure 123 shows a flower collected by Dr. 

 Rose at Illapel, Chile, in 1914. 



4. Eulychnia castanea Phihppi, Linnaea 33: 80. 1864. 



Cereus castaneus Schumann, Gesamtb. Kakteen Nachtr. 

 22. 1903. 



Forming dense thickets sometimes 20 meters broad ; branches 6 to 8 cm. in diameter, spreading 



at base or decumbent, with ascending tips, reaching a height of i meter or less; ribs 9, io, or 11, low 



and rounded; areoles about i cm. apart, large and circular; spines, when young, yellow with brown 



tips, gray or nearly white in age; radial spines 8 to 10, unequal but short, usually 5 to 20 cm. long; 



central spine i, 6 to 10 cm. long, stout, porrect; flowers borne near the tips of the branches, 3 to 5 



cm. long; ovary tuberculate, its numerous areoles with short brown wool and slender brown bristles 



I to 1.5 cm. long, resembling somewhat a chestnut bur; areoles subtended by minute scales each 



with a callous tip; inner perianth-segments i to 1.5 cm. long, broad, with mucronate tips, white or 



pmkish; fruit globular, said to be insipid, 5 cm. in diameter, fleshy, the small scales persistent, but 



nearly devoid of bristles except near the top, crowned by the withering perianth; seeds 1.5 mm. long, 

 dull black. 



.-L 



J- 



- J^ 



\ h 



^- 



r , 



Type locality: Near Los Molles 

 Distribution: On bluffs near ai 

 Los Molles to Los Vilos. 



r ■ 



from 



The history of this species, though short, is interesting. It was collected by Land- 



Los Molles 



1864. 



material, consisting of two flowers anri a fpw hnnnViPc ni cr»i*Tip«; i<? nreserved 



FrfJ 



Museo Nacional de Santiago. Unfortunately 



_^_ X — ' * 



original material and labels 





