OPUNTIA. 



183 



Opuntia zacuapanbnsis Berger, Hort. Mortol. 413. 1912. 



"A fine new species with bright-orange flowers. "We received this plant a few years ago from 

 M. L. Puteaux, Versailles, as Opuntia spec, from Zacuapan.* Joints 13 to 20 cm. long and 9.5 cm. 

 broad, obovate, smooth, glossy green, areoles 15 to 25 mm. distant, slightly elevated, small, roundish 

 or obovate. Spicules yellow, short, not numerous. Spines generally two, white, with yellowish 

 points and base, terete, the lower deflexed shorter, the upper one spreading (2-) 3 cm. long. Flowers 

 numerous from the top of the joint, 7.5 cm. long and 6.5 cm. broad, ovary obovate turbinate, 

 3.5 to 4 cm. long and 22 mm. broad, areoles somewhat elevated, prickly; petals obovate lanceolate, 

 acute and aristate, orange-yellow, with a more reddish-brown hue along the midrib on the back 

 and as well on the shorter obtuse outer petals ; stamens yellow, style yellowish, thickened or clavate 

 above the base, stigmata (6-) 7, dirty rose-coloured." 



We have studied a plant, sent from La Mortola to the New York Botanical Garden 

 in 1913, which has not flowered; it appears to be related to 0. lasiacantha. 



Figure 223 represents a joint from the plant received from La Mortola, Italy, in 1913. 



Fig. 222. — Opuntia lasiacantha. 

 X0.4. 



Fig. 223. — Opuntia zacuapanensis. 

 X0.4. 



Fig. 224.- 



-Opuntia hyptiacantha. 

 X0.5. 



203. Opuntia hyptiacantha Weber, Diet. Hort. Bois 894. 1898. 



Opuntia nigrita Griffiths, Rep. Mo. Bot. Gard. 21: 169. 1910. 



? Opuntia cretochaela Griffiths, Proc. Biol. Soc. Washington 29: 11. 1916. 



A tall, much branched plant, but in cultivation often only i meter high ; joints oblong to obovate, 

 20 to 30 cm. long, pale green, but when young bright green; spines on young joints single, porrect, 

 and accompanied by 2 or 3, sometimes many, white, slightly pungent hairs; spines on old joints 



*Perhaps Zacualpan, in Vera Cruz, Mexico. 



