

176 



Tim CACTACEAB. 



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Series 19. ORBICULATAE. 



We have retained the series Criniferae, although changing its name to Orhiculatae, but we have 

 excluded 0. scheeri, which was placed here by Schumann. The species are characterized by long 

 hairs produced from the areoles. The species retained in the series are not closely related ; while 

 others, like 0. macrocenlra, in other series, sometimes produce long hairs from the areoles in the 



joints. 



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Key to Species 



Hairs from the areoles of young plants long and white, long-persistent; plant low. . 194. 0. orbiculaia 

 Hairs from the areoles of young joints of old plants early deciduous; plant tall. . . 195. 0. pilifera 



194. Opuntia orbiculata Salm-Dyck in Pfeiffer, Enum. Cact. 156. 



Opuniia crinifera Salm-Dyck in Pfeiffer, Enum. 

 Opuntia crinifera lanigera Pfeiffer, Enum. Cact. 

 Opuntia lanigera Salm-Dyck, Cact. Hort. Dyck. 



Cact. 157. 1837 

 157. 1837. 

 1849. 65. 1850, 



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A plant without a very definite trunk, about i meter high, often 

 broader than high; joints green or bluish green, orbicular to obo- 

 vate, sometimes spatulate, about 15 cm. long; leaves subulate, 2 

 to 3 mm. long; areoles small, in seedlings and young plants pro- 

 ducing long wlaite hairs or wool long-persistent; spines acicular, 

 several, yellow; flowers yellow. '^ " 



Type locality: Cited as Brazil, but undoubtedly by error. 

 Distribution: Northern Mexico. 



Op 



senilis Parmenteer is given by Pfeiffer 



(Enum. Cact. 157. 1837) as a synonym of 0. crinifi 



pintadera by Salm 



(Cact. Hort 



1844. 47. 



synonym 



They 



doubtless both belong here. 



Opuntia metternichii Piccioli (Salm-Dyck, Cact. 

 Hort. Dyck. 1844. 46. 1845) and 0. orbiculata met- 

 ternichii Salm-Dyck (Cact. Hort, Dyck. 1849. 68. 

 1850), names without descriptions, doubtless be- 

 long here. 



We have studied livine:^ plants sent from t 



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from 



the Bptanical Garden of Santiago, Chile, as O. orbic- 

 ulata; the plant is not native in Chile. 



Illustration: Monatsschr. Kakteenk. ii: 155, a 

 Figure 2 1 5 represents joints of a plant sent from 



Fig. 215. — Opuntia orbiculata. Xo.66. 



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195. Opuntia pilifera Weber, Diet. Hort. Bois 894. 1898. 



Becoming 4 to 5 meters high, with a definite, thick, woody, cyhndric trunk and a broad, rounded 

 top; joints oblong to orbicular, i to 3 dm. long, obtuse at apex, pale green; leaves subulate, about 

 5 mm. long; areoles 2 to 3 cm. apart, scarcely elevated; spines 2 to 9, white, slightly spreading, 

 acicular ; the outer part of the areole filled with nearly white, more or less deciduous hairs 2 to 3 cm. 

 long; flowers large, red; areoles on the ovary bearing brown glochids and deciduous hairs, the latter 

 especially abundant towards the top of the ovary; fruit red, juicy. 







Type locality: In Mexico. 



Distribution: Puebla, Mexico. 



No definite locality was given for this species when it was first described, and apparently 



material 



Mortola 

 e forms 



ing specimens identified by Weber 

 common about Tehuacan, Mexico 



It is common in all lare^e e^reenho 



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