SEI.ENICEREUS. 



201 



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long, weak, reclining on the lower side of the flower-tube and attached along the inner face of the 

 tube for 7 to 8 cm.; tube-proper about 2 cm. long, yellow within; style 20 cm. long, yellowish green, 

 bronzed above, thick but weak; stigma-lobes numerous, linear; ovary covered with long white silky 

 hairs and bristles, 10 to 12 mm. long; fruit globular, red, 6 to 7 cm. in diameter. 



Type locality: Mexico. 



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Distribution: Mexico; known to us only from cultivated specimens or from plants 

 escaped from gardens. 



Cereus antoinii (PfeifTer, Knum. Cact. 114. 1837) is known only as a synonym of Cereus 

 nycticallus. Cereus rosaceus, first mentioned by De Candolle (Prodr. 3:471. 1 828) , is only a 

 garden name which Pfeiffer (Enum. Cact. 114. 1837) referred to C. nycticallus. 



Cereus peanii Beguin first mentioned in Rebut's Catalogue (Monatsschr. Kakteenk. 4: 

 173. 1894) has never been formally published. According to Weber, it is a hybrid of which 

 Cereus nycticallus is one of the parents. Cere)is nothus (Monatsschr. Kakteenk. 4:173. 1 894) , 

 grown by Gruson but never described, is, according to Schumann, Cereus plcrogonus. Cereus 

 nothus Wendland (Schumann, Gesamtb. Kakteen 143. 1897), however, he says is a hybrid. 



Several varieties of this species have been named, most of which doubtless belong here ; 

 at least the following do: C. nycticalus gracilior Haage (Forster, Handb. Cact. 416. 1846), 

 C. nycticalus maximiliani (Arendt, Monatsschr. Kakteenk. 1:58. 1891), and C. nycticalus 

 viridior Salm-Dyck (Cact. Hort. Dyck. 1849. 51, 216. 1850). It has frequently been used 

 by gardeners in making hybrids, especially with 5. grandiflorus and Heliocereus speciosus. 



This is a common plant in conservatories. 



Illustrations: Amer. Garden 11:471; Diet. Gard. Nicholson i:f. 408; Lemaire, Cact. 

 f. 11; Riimpler, Sukkulenten f. 70, 71; Verb. Ver. Beford. Gartenb. 10: pi. 4, alias Cereus 

 nycticallus. 



Plate xxxvm, figure i, shows a fruiting branch of a plant obtained from J. E. Barre 

 in 1 90 1, which flowered in the New York Botanical Garden in 1915. 



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7. Selenicereus kunthianus (Otto) Britton and Rose, Contr. U. S. Nat. Herb. 12: 430. 1909. 



Cereus kunthianus Otto in Salm-Dyck, Cact. Hort. Dyck. 1849. 217. 1850. 



green 



10, low; spines 



mm 



segments numerous, linear, shorter th£ 

 with long silky hairs; fruit unknown. 



Type locality: Not cited 



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Dist 



Known only in cultivation ; said to have come from Honduras 



We are basins- our determination of this species on a plant sent under this name 



Dr. Rose from the Berlin Botanical Garden (1909); this has 5-ai 

 ginal description of the species calls for 7 -angled to lo-angled stems 

 be this amount of variability in the stems, or there may be two i 



Figure 277 shows a branch of a plant in the collection of th 

 Garden, received from the Berlin Botanical Garden. 



stems. The 



There may 



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8. Selenicereus brevispinus sp. nov. 



Stems rather stout, climbing or 

 clambering, 2 to 3 cm. thick, in cultiva- 

 tion somewhat branching, light green, the 

 growing branches tipped with white 

 hairs; ribs 8 to 10, separated by narrow 

 intervals, undulating, with knobby areoles ; 

 areoles circular, with short tawny felt; 

 spines about 12, conic, stiff, about i mm. 

 long, the 3 or 4 centrals thicker than the 

 somewhat curved or hooked radials; 

 bristles from the lower oarts of the arec 



Fig. 277. 



kunthianus. X0.5. 



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