5 



THE CACTACEAE. 



1. Lobivia bruchii sp. nov. 



Plants simple, globular, more or less depressed in the center; ribs 50 or more, distinct but low, 

 more or less tuberculate ; areoles filled with short white wool ; spines several, spreading, usually 

 dark colored, those of the upper areoles connivent; flowers small, at areoles below the apex of 

 plant, deep red; tube of flower short, its axils filled with wool; inner perianth-segments lanceolate, 

 slightly spreading; filaments exserted beyond the throat, but shorter than the perianth-segments; 

 fruit and seeds unknown. 



Described from a photograph taken in March 1907, sent by Dr. C. Bruch, of a plant 

 in Tafi del Valle, province of Tucuman, Argentina. 



Figure 62 is from the photograph mentioned above. 



Kig. 62. Lobivia bruchii. 



2. Lobivia ferox sp. nov. 



Roots fibrous; plants globular, 3 dm. in diameter or more, almost hidden by the long upwardly 

 curved spines; ribs numerous, often as many as 29, deeply undulate and broken into thin, acute tuber- 

 cles 2 to 3 cm. long; spines light brown, sometimes mottled; radial spines 10 to 12, slender, 4 to 6 

 cm. long, somewhat curved; central spines 3 or 4, somewhat flattened in one vertical row, rather 

 weak, curved upward, 10 to 15 cm. long; flower-buds woolly; flowers and fruit not seen. 



Collected on dry hills east of Oruro, Bolivia, August 18, 1914, by J. N. Rose (No. 

 1 8918). 



In cultivation, as is shown by our illustration, the long upturned spines are very 

 poorly developed at the top of the plant which is nearly naked. This plant was observed 

 in only one locality in Bolivia, although it is doubtless to be found elsewhere; it grows 

 on very dry gravelly hills among low thorn bushes. It is easily detached from the soil 

 having only fibrous roots and in this respect is very unlike another species of this genus 

 (see No. 18919) which has fleshy deep-seated roots. In its long stout upturned spines 

 it is unlike any other plant we know and has a very striking habit. Several living 

 plants were sent to the New York Botanical Garden in 1914 by Dr. Rose, one of which 



