i6o 



THE CACTACEAE. 



1. Borzicactus sepium (HBK.). 



Cactus sepium Humboldt, Bonpland, and Kunth, Nov. Gen. et Sp. 6: 67. 

 Cereus sepium De Candolle, Prodr. 3: 467. 1828. 

 Cleistocactus sepium Weber in Gossclin, Bull. Mens. Soc. Nice 44: 36. 

 Borzicactus ventimigliae Riccobono, Boll. R. Ort. Bot. Palermo 8: 262. 



J K 



1823 



Cereus ventimigliae Vaupcl, Monatsschr. Kakteenk. 23: 13. 1913. 



1904. 

 1909. 



7 - 



Stem slender, simple, columnar, 1.5 meters high, about 4 cm. thick; ribs 8 to 11, crenate, obtuse; 

 areoles 1.5 to 2 cm. apart; radial spines 8 to 10, slender, spreading, 5 to 10 mm. long; central spine 

 solitary, about 2 cm. long; spines all dark red with yellowish bases when young, gray in age; flowers 

 somewhat zygomorphic, about 4 cm. long, 3 cm. broad; scales on ovary and flower-tube woolly 

 in their axils; outer perianth-segments lanceolate, erect, scarlet; inner perianth-segments cuneate, 

 red; pistil slightly exceeding the stamens; stigma-lobes 10, short, green- 

 ish; fruit globular, 2 cm. in diameter ; flesh of fruit white ; seeds numerous. 



Type locality: Near Riobamba, at foot of Chimborazo, 

 Ecuador. 



Distribution: Dry hills along the interandean valley of 



Ecuador from San Antonio to Riobamba. 



The plant blooms from July to September, while the flowers 



remain 



A careful examination 



the description of Humboldt 



Cactus sepium convinces us that it is the same as Bordcactus 



ventimigliae. 



r 



from the high Andes of Ecuador 



similar, but the 



from Palermo as B, ventimidiae is the same 



from 



Ecuador 



Riobamba 



um. Dr. 

 did not 



see this species there ; but he did find it a little north on the hills 



Ambato 



22389). He alsc 



_ * 



Ambato and Q 



what he took to be 

 and, again, collected 



Quito 



Fig. 229. — Top of plant of 

 Borzicactus sepium. X0.6. 



Ambato and doubtless elsewhere and is known as muyusa 



Palermo 



from 



2. 



anus 



J ^ 



growing 



or ascending and leaning against rocky banks for support, 4 to 6 cm. in diameter; ribs 13 to 16, low, 

 obtuse, divided into tubercles by V-shaped creases above the areoles ; areoles circular, i cm. apart or 

 less; spines numerous, 15 to 20, bristly or somewhat acicular, brown, unequal, the longer ones 2.5 

 cm. long; flovycrs narrow, 5 to 6 cm. long, slightly oblique; perianth-segments spreading, acute; 

 stamens exserted ; filaments purple above, white or tinged with pink below, erect ; style cream-colored ; 

 stigma-lobcs 10, cream-colored. > > j 



T. _ _ .^^L^^?'"^^" at Sibambe, Ecuador, where it was collected by J. N. Rose and George 



2426). 



., ^ugui,L 29, 1915 (^iNo. 22431, type), and above Huigra, August 28, 1918 (No. i_^--,- 

 Here may belong Dr. Rose's plant (No. 22829) from Cuenca, although it has somewhat 



more ribs on the stem. 



named for Mr. Edward 

 is explorations in Ecuad 



Huigra, Ecuador, who greatly aided ''Dr. 



graphed by George Rose. 



3. Borzicactus icosagonus (HBK.). 



stem 



Cereus isogonus Schumann. Gesamtb. Kakteen 102. ' 1897 



Cleistocactus icosagonus Weber in Gosselin. Bull. Mens. Sci. Nice 44: 34. 1904 



1823. 





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