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HARRISIA. 



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Illustrations: Monatsschr. Kakteenk. 14: 89. f. b; Rep. Mo. Bot. Gard. 16: pi. 9, f. i ; 

 U. S. Dept. Agr. Bur. PL Ind. Bull. 2i62: pi. 7, all as Cereus tortuosus. 



Plate xxi, figure i, shows a flowering branch, figure 2 a fruiting branch, both from 

 plants in the collection of the New York Botanical Garden. 



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12. Harrisia pomanensis (Weber)' , 



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^ _ Cereus pomdriensis^^^ Gesamtb. Kakteen 136. 1897. 



•: Often prostrate or arched, bluish green and gmucous; ribs 4 to 6/ rounded, obtuse; radial spines' 

 6 to 8, I cm. long; central spine solitary, i to 2 cni. long; spines all subulate, when young white or* 

 rose-colored; flowers 15 cm. long; outer perianth-segments linear, acute; inner perianth-segments 

 oblong, acutish, probably white; stignia-lobes numerous, linear; scales on ovary and flower-tul>e 

 ovate, acute. . 



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Type locality: Poman, Catamarca, Argentina. 



Distribution: Northwestern Argentina. 

 -There is a living specimen of this species in the New York Botanical Garden (No. 

 39517). The stem is 4-angled, 2 cm. broad, and light green. The small areoles are 2 cm. 

 apart and the acicular spines are less than 5 mm. long. The plant has not yet flowered. 



Cereus bonplandii pomanensis Weber (Schumann, Gesamtb. Kakteen 137. 1897) is 

 given as a synonym of this species. C. pomanensis grossei (Graebener, Monatsschr. Kak- 

 teenk. 19: 137. 1909) is only a mentioned name. ^ 



Illustrations: Rep. Mo. Bot. Gard. 16: pi. 7, f. 5, 6, both as Cereus pomanensis. 



Figure 225 is from a photograph of a flowering branch in the collection of Dr. vSpeg- 



azzini at L'a Plata, Argentina. 



13, Harrisia martinii (Labouret). 



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' ^ Cereus martinii Labouret, Ann. Soc. Hort. Haute Garonne. 1854. 

 ' Eriocereus martinii Riccobono, Boll. R. Ort. Bot. Palermo 8: 241. 1909. . 



^' Cereus martinii perviridisWe'mgart, Monatsschr. Kakteenk. 2^:72. 1914- ^' 



■• Plant much branched, clambering, 2 meters long or longer; old stems terete, spineless; young 



stems vigorous, about 2 cm. thick, pointed, 4 or 5-angled; areoles with a stout central spme 2 to 3 

 cm. long, sfraw-colored with a black tip and a row of short radials, sometimes half as long as the 

 f \ central one ; flower about 2 dm. long ; outer perianth-segments narrow, becoming pinkish, acuminate ; 



. >- inner perianth-segments broader, short-acuminate, white or tinged with pink; style green; ovary 



tuberculate ; scales on ovary ovate, acuminate, on tube similar, becoming more elongate above, all with 

 brown felt in their axils; fruit red, 3.5 cm. long, bearing small scales, the flowers withermg-persistent. 



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Type locality: Not cited. 



Distribution: Argentina. 



Cereus monacanthus Cels, not Lemaire 



Schumann (Gesamtb. Kakteen 142. 1897) as a synonym 



Cels, Catalogue, 1853. Here may belong Pilocereus monacanthus Lawrence in Loudon 



Mag. 17:319. 1841. 

 plant of this species in the Kew collection is said by Mr 



(Monatsschr. Kakteenk 





. ...^o.,^..uno. Amer. Gard. 11: 569; Cycl. Amer 



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martinii. 



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fruiting 



from plants in the collection of the New York Botanical Garden 



Harrisia 



Cerew^ad^cend^w^Gurke, Monatsschr. Kakteenk. 18:66. 1908. , ', / , , 



h t 5 to 8 meters long, 2 to 5 c?n. thick; ribs 7 to. 10, low, rounded, broken up 



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