OPUNTIA. 



173 



/ 



Key to Species. 



Joints narrowly obovate. 



Joints grayish green, densely velvety 190. 



Joints bright green, minutely puberulent 191. 



Joints broadly obovate. 192. 



190. Opuntia tomentosa Salm-Dyck, Observ. Bot. 3: 8. 1822. 



0. tomcnlosa 



0, tomcnidla 

 O. guihinchi 



Cactus tomentosus Link, Enum. Hort. Berol. 2: 24. 1822. 

 Opuntia oblongata Wendland in Pfeiffer, Enum. Cact. 161. 

 Opuntia icterica Griffiths, Monatsschr. Kakteenk. 23: 138. 



1837. 

 1913. 



* - "I 



Becoming 3 16 6 meters high or more, with a broad top and a smooth trunk 10 to 30 cm. in 

 diameter; joints oblong to narrowly obovate, 10 to 20 cm. long, velvety pubescent, somewhat 

 tuberculate when young; glochids yellow; spines usually wanting but sometimes 1 or more appear; 

 flowers orange-colored, 4 to 5 cm. long; filaments white or rose-colored; style dark carmine, longer 

 than the stamens; stigma-lobes 5 or 6, white; fruit ovoid, red, sweetish; seeds 4 mm. broad. 



i 



Fig. 212. — Opuntia tomentosa. 



Mexico 



Distribution 

 This snecies 



Mexico 



When 



It 



is usually nearly or quite spineless, but plants which come from the Valley of Mexico are 



often spiny. 



J. H. Maiden 



name 



Illustrations: 



Monatsschr 



16: 121 



cochenillifer {fid 



