BERGEROCACTUS. 



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Underground stems slender, spineless, branching near the surface of the ground; branches some- 

 what clavate, becoming bronzed, 6-ribbed; spines all black at base, brown at tip; radial spines about 

 6, acicular, central spine solitary, porrect, slender; flowers probably purphsh, 5 to 6 cm. long, with 

 a rather broad throat; fruit fleshy, spiny; seeds not known. 



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Type locality: Near Aranas, Santiago, Chile. 

 Distribution: High mountains of Chile, near Santiago. 



This species has been described under four specific names, and has been referred to 

 four genera. We refer it to Erdisia on account of floral similarity to E. squarrosa. 



Gartenflora 21 : pi. 721, f. 3, as Opuntia clavata; Gartenflora 31 : pi. 1085, 



Illustrations: Gartenflora 21: pi. 721, f. 3, as 



ereus hypogaeus. 



Figure 157 is a copy of the first illustration above cited. 



PUBLISHED SPECIES, PERHAPS OF THIS GENUS. 



Tahrb 



1913 

 eading 



2 to 3 times as long as the radials; flowers numerous, forming a crest at the top of the plant, 4 cm. 



with 



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and reddish-brown bristles in their axils. 



Type locality: Valley of Puccha River, Department of Ancachs, Peru. 



The author compares the flowers of this plant with those of Cereus aureus Mcyen. 



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14. BERGEROCACTUS Britton and Rose, Contr. U. S. Nat. Herb. 12: 435- 1909- 

 Low, much branched cactus, with stout, cyHndric. spreading or ascending branches ; ribs many 

 low; areoles approximate; spines many, yellow, acicular; flower small, pale yellow, with short tuoe 

 and widely expanded limb ; scales on ovary and flower-tube small, bearmg felt and spmes m their 

 axils; perianth-segments small, obtuse; fruit globose, densely spiny; seeds obovate. 



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Fig. 158.— Bergerocactus emoryu 



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