ERDISIA. 



i°5 



Botanical Garden survived. It was first seen by him about 10 miles below Cuzco, along 

 the railroad running to Juliaea, and was frequently observed a long distance below Cuzco, 

 being easily recognized by its scarlet flowers, which in September were just appearing. 



In June 19 14, Ellwood C. Erdis collected living specimens 40 miles west of Cuzco, at 

 2,450 meters altitude, but these died. In November of the same year he again collected 

 the species, this time in flower. 



In May 1915, O. F. Cook and 

 G. B. Gilbert collected the plant at 

 Ollantaytambo, Peru, at an altitude 

 of about 3 ,000 meters. These spec- 

 imens were accompanied by both 

 ilowers and fruit, and some good 

 habit and detail photographs were 

 taken. 



Figure 154 is from a photo- 

 graph taken by O. F. Cook at 

 Ollantaytambo, Peru, in 1915; 

 figure 155 shows portions of the 

 plant photographed. 



2. Erdisia philippii (Regel and 



Schmidt). 



Cerens philippii Regel and Schmidt, 



Gartenflora 31:98. 1882. 

 Echinocactus philippii Schumann, 



Gesamtb. Kakteen 427. 1898. 

 Echinopsis philippii Nicholson, 



Diet. Gard. Suppl. 338. 1901. 



Stems slender, cylindric; ribs 8 to 

 10, strongly tubercled; radial spines 

 about 8, 10 to 12 mm. long; central 

 spines much stouter and longer, 2.5 

 cm. long; flowers 4 em. long, eampan- 

 ulate, yellow below, reddish above; 

 outer segments ovate, acuminate; inner 

 segments oblong, acute ; stamens in two 

 distinct series, the outer arising from 

 the base of the segments, the inner 

 series united into a tube around the 

 style ; style included ; stigma-lobes very- 

 short ; ovary globular, bearing clusters 

 of aeieular spines. 



Fig. 155. — Erdisia squarrosa. 



Type locality: Chile. 



Distribution: Known only from the type collection. 



This species has been described in turn under Cereus, Echinocactus, and Echinopsis, 

 from all of which it is distinct. It is remarkable in having the lower series of stamens 

 united into a tube. 



Illustrations: Gartenflora 31: pi. 1079, f. 1, a, b, as Cereus philippii. 



3. Erdisia meyenii nom. nov. 



Cereus aureus Meyen, Allg. Gartenz. 1:211. 1833. Not Salm-Dyck, 1828. 

 Cactus aureus Meyen, Reise 1: 447. 1834. 

 Echinocactus aureus Meyen in Pfciffer, Enum. Cact. 68. 1837. 

 Cleistocactus aureus Weber in Gosselin, Bull. Mens. Soc. Nice 44: 39. 1904. 



Stems subterranean, often forming large colonies sending up short, usually unjointcd branches; 

 joints 10 to 20 cm. long, 3 to 5 cm. in diameter, more or less clavate; ribs 5 to 8, high (1 cm. high or 



