OPUNTIA. 



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94. Opuntia montevidensis Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4: 515. 1905. 



Cespitose, the branches 3 to 5 dm. high; joints 5 to 10 cm. long, obovate to elliptic; areoles not 

 very prominent; spines usually 5, 3 longer and stouter, 2 very small, reflexed, and setiform, the 2 or 



3 longer ones erect or spreading, 2 to 3 cm. long; flowers 4 to 5 cm. broad, orange-colored; fruit 

 dark purple, clavate, 3.5 to 4 cm. long ; seeds lanate. 



. Type locality: Cerro de Montevideo, Uruguay. 

 Distribution: Cerro de Montevideo, and near La Colonia, Uruguay. 



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95. Opuntia retrorsa Spegazzini, Anal. Mus. Nac. Buenos Aires III. 4- S^?- ^905- 



(?) Opuntia platynoda Griffiths, Bull. Torr. Club 43: 526. 1916. ' 



Stems prostrate, intricately branched, creeping, rooting at the nodes; joints linear-lanceolate, 

 more or less attenuate at each end, flattened; areoles somewhat prominent, each subtended by a 

 long, dull purpHsh blotch; spines i to 3, reflexed, white below, with pinkish tips; flowers yellowish, 



4 to 5 cm. broad; fruit about 2 cm. long, violet-purple on the outside, light rose on the inside; seeds 

 2 to 2.5 mm. broad, somewhat villous. 



Fig. 134. — Opuntia retrorsa 



Territory 



Distribution: Northern 



from 



York Botanical Garden in 191 1. Figure 134 is from 



utkilio Soesrazzani, Anal. Mus 



Low. creeping plant, rooting at the joints, with elongated branches 5 to 15 ^";-^^"^= J°;"^X; 

 elliptic-linear is to%o cm long, s to 6 cm. broad; spines at first 2 or 3. the upper one longer, later 

 mo?e numerous.^eflexedTflow^^^^^ 3-5 'to 4 cm- broad yellowish: ovary obovcnd. somewha 



spiny; fruit smil, 3 cm. long, fle^hv. insinid. reddish violet both withm and without, seeds sub 

 orbicular, 4 mm. broad, lanate. 



Type locality: Province 

 Distribution: Northern 



Tucuman 



Figure 135 is from a photograph sent by Dr. Sj 



96a. Opuntia discolor sp. nov. (See Appendix, p. 218.) 



anacantha SDeeazzini in Gosselin, Bull. Mus 



1904 



Usually decumbent and rooting along the under surface. ^««lf ^^^J^^^^^^^^^^^^^ 

 I to ..5 ^/ters long; joints unarmed, dark g-en e-epUor llf^^^^l^^l^.^:^:^, SS 

 to lanceolate, narrowed toward each end. 1.5 to 4 dm. lo«g; 3-5 to^7 cm- ^J^^f 'j ^^^j^j;,^ ^^tuse. 



large, numerous, yellowish orange 4 cm. long. 5 06 l^^f^t^l^^'^orvosJcoior.A-, fruit 3 cm. 

 emarginate or even 2-lobed; petals 12; style white, stigma looes wiiuc ui 



long, red, the pulp yellowish or white. 



Type locality: In the southern 

 Distribution . 

 Figure 136 is 



Northeastern Argentina, 

 from a photograph of a part of the type plant, received from 



<y. 





