MAIHUKNIA. 



41 



! 



Key to Species. 





["J 



i^' V- 



E 



PL 



H f 



AT, patagonica 



. 3 . 1/. brachydelphys 



Joints subglobosc. ..... 



Joints oblong to cylindric. 



Leaves linear, 4 to 6 mm. long ' 2. M, poeppigii 



Leaves ovate to subulate, 2 to 4 mm. long. 



Joints spineless below 



Joints spiny all over. 



Leaves on the ovary with white hairs 



in their axils 4. M, valentinii 



Leaves on the ovary without hairs in 



their axils ; 5. M, lehnelrhes 



1. Maihuenia patagonica (Philippi). 



Opuntia patagonica Philippi, Linnaea 33 : 82. 1864. 

 Pereskia philippii Weber, Diet. Hort. Bois 939. 1898. 

 Maihuenia philippii Weber in Schumann, Gcsamtb. Kak- 

 teen 757. 1898. 



Low, much branched, and dense, resembling Sempcrvi- 

 vum tomentosum in habit; joints subglobose, i to 1.5 cm. in 

 diameter; leaves subulate, green; young areoles bearing 

 white hairs; spines weak, hardly pungent, white, the longest 



Fig. 51. 

 Fig. 52. 



Maihuciiiu poeppigii. X«.7.S. 

 Mailinenia brachydelphys. X0.75. 



:: ■^.■. ■■ -.f .'. '-■ •-'-■'.■■--;;. ■:-.:i'i\ ■■■■■; ".-' ■/' 



10 to 15 mm. long; flowers 2.8 to 3 cm. long; fruit 8 to 10 mm. long, thicker than long; leaves on 

 the ovary ovate to lanceolate, fleshy, naked in their axils, except some of the upper ones; seeds 

 round, 3 to 4 mm. in diameter. 



Type locality: In southern Argentina. 



Distribution: Near snow-line on southern mountain ranges of Argentina and Chile. 

 Opuntia philippii Haage and Schmidt, without description, is given. by Weber (Diet. 

 Hort. Bois 939. 1898) as a synonym of this species. 



This is called by the natives espina blanca. 



2. Maihuenia poeppigii (Otto) Weber in 



Schumann, Gesamtb. Kakteen 755. 

 1898. 



Opuntia poeppigii Otto 111 PfeilTcr, 



Enum. Cact. 174. 1837. 

 Opuntia inaihuen Remy in Gay, Fl. 



Chilena 3: 29. 1847. 

 Pereskia poeppigii ^alm-Dyck, Cact. 



Hort. Dyck. 1849. 252. 1850. 



Shrubby, much branched, prostrate, 

 torming dense cespitose masses i meter 

 broad; joints spiny to the bases, cyHn- 

 dric, 6 cm. long or more, 1.5 cm. in diam- 

 eter; leaves cylindric, green, 4 to 6 mm. 

 long; spines 3 from each areolc, the 2 late- 

 rals very short, the central one 1.5 to 2 

 cm, long; flowers terminal, yellow; fruit 

 oblong to obovoid, about 5 cm. long and 

 3 cm. thick. 



Type locality: In Chile, without 

 definite locality. 



Distribution: Hieh mountains of 

 Chile. 



e> 



Illustrations : 



samtb. Kakte 



Schumann, 



Ge- 



en f. 108, B, c; Car- 



ol son 



tenflora 32: pi. 1129, f. i to 4, as 

 Opuntia poeppigii- Diet. Card. Nich- 



3 : f. 82, as Pereskia poeppigii. 

 Figure 51 is from a fruit obtained 

 by Dr. Rose at the National Museum 

 of Chile, vSantiago, in 1914. 



p,Q. 53. —Maihuenia tehuelches 



