BORZICACTUS. 



163 



6. Borzicactus humboldtii (HBK.). 



Cactus humboldtii Humboldt. Bonpland, and Kunth, Nov. Gen. et Sp. 6: 66 182^ 

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



Soc 



1904. 



Procumbent cylindnc; ribs 10 to 12. low, somewhat tuberculate; spines setose, rigid; flowers 

 red, about 7 cm long; flower-tube elongated; the scales bearing long greenish gray hairs- Dcriantli'- 

 segments lanceolate, acute, red; filaments slender, glabrous; style much longer than the perianth. 



Type locality: Between Sondorillo and San Felipe, Peru. 

 Distribution: Northern Peru and probably southern Ecuador. 



but it is now in northern Peru. 



Humboldt 



Ecuador near Loj 



Ecuador 



which seemed to correspond to Cactus humboldtii. 

 7. Borzicactus plagiostoma (Vaupel). 



Cereus plagiostoma Vaupel, Bot. Jahrb. Engler 50: Bcibl. iii: 20. 1913. 



Columnar, erect, or suberect, about i meter high, attenuated and rounded at apex; ribs 15, low; 



areoles close together, orbicular; spines numerous, nearly black; flowers numerous, cylindric but 



.somewhat zygomorphic; ovary bearing many small, ovate, acuminate scales with black felt in axils. 



Type locality: San Miguel, Department of Cojamarca, Peru. 



Distribution: Peru. 



Said to resemble Cleistocactus baumannii, but the relationship is doubtless with the 

 species which we have referred to Borzicactus. It is known to us only from description 

 and illustrations. 



Illustrations: Monatsschr. Kakteenk. 24: 165, 167, as Cereus plagiostoma. 



8. Borzicactus aurivillus (Schumann). (See Appendix, p. 226.) 



PUBLISHED SPECIES, PERHAPS OF THIS GENUS. 



. C1.EIST0CACTUS CHOTAENSis Weber, Bull. Mens. Soc. Nice 44: 47. 1904. 



Cereus chotaensis Vaupel, Monatsschr. Kakteenk. 23: 25. 1913. 



Plant 2 meters high; flowers 5 cm. long, orange-colored; limb 2.5 cm. broad; scales on the ovary 

 bearing long black hairs; stamens as long as the perianth-segments. 



h 



Type locality: On the Rio Chota, Peru. 



According to Weber this species is similar to one of the so-called species of Cereus 



collected by Humboldt from this same general region. 



■ 



Cereus serpens (HBK.) De Candolle, Prodr. 3: 470. 1828. 



Weber 



Ckn. et Sp. 6:68. 1823. 

 :. Nice 44:39- 1904- 



Stems creeping; branches somewhat angled; areoles 6-angled, spiny; sjpines i to 3.5 cm, long; 



upper 



gments 



little shorter than the perianth-segments; ovary ovate; stigma-lobes 8. 



Type locality: 



near Sondorillo, Ecuador 



now Peru. 



Distribution: Known only from 



This species was originally described from Bonpland's manuscript notes and no 



The type locality is definitely given and it should be re-collected 



specimens 



and positively identified. Kunth, ■ j n 1 u u 



Cactus, questioned its belonging to the subgenus Cereus, while De Candolle, although 



r H 



