NOPALIiA. 



37 



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3a. Nopalea gaumeri sp. nov. (See Appendix, p. 216.) 



4. Nopalea auberi (Pfeiffer) Salm-Dyck, Cact. Hort. Dyck. 1849. 64. 1850. 



Opuntia auberi Pfeiffer, Allg. Gartenz. 8; 282. 1840. 



Often 8 to 10 meters high, with a cyUndric, jointed trunk, never very spiny, but the arcoles 

 bearing tufts of brown glochids; branches often at right angles to the stem; joints narrow, tliick, 

 3 dm. long, bluish green and glaucous; areoles circular, about 2 mm. broad, bearing short white wool 

 and later a tuft of brown glochids; spines, when present, i or 2, subulate, the upper one about twit^ 

 as long as the other, white or nearly so, with brownish tips, the longest one 2 to 3 cm. long; flowers 

 from base of ovary to tip of style about 9 cm. long; petals erect, closely embracing the stamens, 

 rose-pink, ovate-lanceolate, acuminate, 2 to 3.5 cm. long; filaments 12 to 15 mm. longer than the 

 petals, white below, but the exposed parts pinkish; anthers dehiscing before maturing of stigma; 

 style stout, light pink with a large, white, circular disk just above the constricted base; stigma- 

 lobes green; ovary 4 cm. long, with low but very distinct tubercles and a deep umljilicus, its areoles 

 bearing many brown glochids, these sometimes 10 mm. long. 



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Fig. 42. — Nopalea 

 dejecta. X0.33. 



Fig. 43. — Nopalea karwinskiara. 



X0.5 



Tig. 44- 



Nopalea inaiKTta. 

 Xo.5, 



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Type locality: Erroneously cited 



and southern Mexico 



Distribution: Central 

 Illustration: Addisonia i : pi. lo. 



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of a plant obtained by W 



Mexico 



1907; figu 



of the same plant; plate v is 



from a ohotos-raoh taken bv Dr. MacDougal near Mitla, Mexico 



/ 



dejecta 



1850. 



Salm 



1834. 



Plant 



I 



very 



1 



joints narrow, lo to i 



green 



bearing usually two somewhat spreading spines at an ^^^^'^ ■'/^^r\^'jfj^^l^^^^^ 



in age |ray . the longest 4 cm. long ; flower, including ovary and style, 5 cm. long . sepals obtuse . petals 



erect, dark red ; stamens long-exserted, dark red. 



Type 



E 



Common in'cultivation in tropical America 



Op 



ntia diffus 

 synonyms 



and O. horizontalis are both given by Pfeiffer (E 



in Panama 

 Cact. 159 





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