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226 



The cactaceag. 



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Type locality: Tacaquira, Bolivia. 

 Distribution: Southern Bolivia. 



CerEus tarijensis Vaupel, Monatsschr. Kakteenk. 26: 123. 1916. 



Columnar, 1.5 meters high, 2.5 dm. in diameter; areoles broadly elliptic to oval; radial spines 

 10 to 13, stout, pungent^ unequal, reddish brown; central spine solitary, 7 cm. long; flower 10 cm. 

 long; outer perianth-segments lanceolate; inner perianth-segments spatulate. 



Type locality: Escayache, near Tarijo, Bolivia. 

 Distribution: Southern Bolivia. 



8. Borzicactus aurivillus (Schumann). (See page 163, a;z/e.) 



Cereus aurivillus Schumann, Monatsschr. Kakteenk 13: 67. 1903. 



Cyhndric, 2.5 dm. high or more, 2.5 cm. in diameter; ribs 17, crenate; areoles closely set, 

 only 5 to 7 mm. apart, elliptic, bearing yellow curly wool; spines 30 or more, nearly equal, short, 

 colorless except the yellow bases ; flower from near the top of the plant, somewhat zygomorphic, 

 6 cm. long; inner perianth-segments obtuse. 



Type locality: Probably Peru. 



Distribution: Andes of Peru. 



Illustrations: Monatsschr. Kakteenk. 29: 7, 9, as Cereus aurivillus. 



Oreocereus celsianus. (See page 171, ante.) 



Restudy of Pilocereus straussii may show that it is specifically distinct from Oreocereus 

 celsianus. The name Cereus straussii was really published by Heese in Gartenflora (62 : 383) 

 in 1907, although the illustration accompanying it bears the legend, Pilocereus straussii. 



Illustrations: MoWers Deutsche Gart. Zeit. 25: 483. f. 15, as Pilocereus celsianus 

 hruennovuii; Schelle, Handb. Kakteenk. 100. f. 39, as Pilocereus celsianus; Gartenflora 

 62: 383. f. 55, as Pilocereus straussii. 



Cleistocactus baumannii. (Seepage 174, ante,) 



Of this relationship is the following: 

 Eus TupizRNSis Vauoel. Monatsschr. 



1916. 



Slender, 2 to 3 meters high; ribs unknown; areoles large, oval; spines 15 to 20, subulate, 

 pungent, reddish brown; central spines 2, one above the other, 4.5 cm. long; flower tubular, some- 

 what zygomorphic, 8 cm. long, pale salmon-colored ; outer perianth-segments small; inner perianth- 



gm 





Type locality: Tupiza, Bolivia. 

 Distribution: Southern Bolivia. 



5a. Hylocereus venezuelensis sp. nov. (See page 186, ante.) 



Vines rather slender, climbing, bluish, 3-angled, the joints 3 to 4 cm. broad; margin of ribs 



homy 



ary 



white above, pink below; stigma-lobes cream-colored, deeply cleft. 



Collected by J. N. Rose near Valencia, Venezuela, in 191 7 

 We were at first disposed to refer this plant to ILpolyrhi 



in the New York Botanical Garden in J 



ferent in its stigma-lobes, which are deeply cleft as in H 

 the stigma-lobes, so far as we know, are always entire. 



1920, it produced a flower strikingly dif- 



H. lemairei and H 



stigma 



may also occur in H. b 



In H. polyrhizus 

 ► W. Weingart, a 

 only two species 



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