OPUNTIA. 



179 



198. Opuntia undulata Griffiths, Rep. Mo. Bot. Gard. 22: 32. 1912. 



Opuntia undosa Griffiths, Monatsschr. Kaktenk. 23: 139. 1913. 



"Plant tall, large, stout, open-branching, with cylindrical trunk, often 30 cm. or more in 

 diameter; joints very large, obovate, broadly rounded above, widest above middle, commonly 

 35 by 55 cm., firm, hard, quite fibrous, dished, wavy or flat, glossy light yellowish green at first, but 

 changing through a darker green with a slight touch of glaucous to scurfy brown on old trunks; 

 leaves subcircular in section, subulate, pointed, usually tinged with red at the tip, about 4 mm. long, 

 upon a prominent tubercle and subtending a prominent dark-brown areole; areoles subcircular to 

 ellipsoid or obovate, about 3.5 by 4.5 mm., gray, 5 to 6 cm. apart; spicules yellow in a short, compact 

 tuft in upper part of areole, about 

 I mm. long, soon becoming dirty 

 and inconspicuous; spines white, 

 few, short, erect, flattened, straight 

 or twisted, 10 to 15 mm. long, i 

 to 3 or 4, mostly one or none; 

 fruit large, 4 to 5 by 9 to 10 cm., 

 dull red to slightly tinged with 

 orange and pulp streaked with red 

 and orange when rind is removed. ' ' 



Type locality: Described 

 from cultivated plant obtained 

 at Aguascalientes, Mexico. 



Distribution: Mexico. 



Illustrations: Rep. Mo. Bot. 

 Gard. 22: pi. 11, in part; pi. 12. 



We have doubtfully referred 

 to this species plants collected 

 by Dr. Rose on the west coast 

 of Mexico, where they were 

 growing wild ; this is some dis- 

 tance from the place where the 

 type was obtained from culti- 

 vated plants. These speci- 

 mens are like this species in having quite glossy joints with few spines. The plants were 

 not in bloom when seen by Dr. Rose in the spring of 19 10. 



Dr. Griflfiths has changed his first name, 0. undulata, on account of the use of that 

 name at an earlier time, which was not accompanied, however, by description. 



199. Opuntia lanceolata Haworth, Syn. PI. Succ. 192. 1812. 



Cactus lanceolatus 'Ra.worih, Misc. Nat. 188. 1803. 

 Cactus elongattis Willdenow, Enum. PI. Suppl. 34. 1813. 

 Opuntia elongata Haworth, Suppl. PI. Succ. 81. 1819. 



Plants tall, much branched; joints elongated, 3.5 cm. long, dull green, somewhat tuberculate; 

 areoles distant, small ; spines if present few, small, white, i cm. long or less ; glochids yellow ; flowers 

 large, yellow. 



Type locality: In South America. 



Distribution: Known only in cultivation. 



We have combined 0. lanceolata and 0. elongata, although there is a possibility of their 

 being different. 0. lanceolata was first described essentially as follows: Joints flattened, 

 suberect, subnaked, with leaves 3 lines long; stems at first erect; joints lanceolate, green, 

 when young with many leaves; spines (spicules?) in fascicles, the shortest of all species 

 (except Cactus coccinellifer) ; leaves longer than in other species. 



The species was received by Haworth from W. Anderson; no habitat given. In 181 2 

 Haworth calls it the spear-shaped Opuntia. He says it probably came from South America, 



Fig. 219. — Opuntia crassa. 



