284 



CEREUS 



CEROPEGIA 



with pink, nocturnal. W. lud. and Mex. — The plant 

 much resembles C. grandiflorus , but is easily distin- 

 guished by its smaller and different colored fls. 



53. Marti&nus, Zuco. Of bushy growth, branching, 

 reaching a height of 3 ft. and more ; branches slender, 

 provided here and there with aerial roots, cylindrical, 

 about /4in. in diani ; ribs commonly 8, straight, sepa- 

 rated by sharji grooves, very low : areolae 34-% in. 

 apart, small, white : radial spines 6-10, bristle-form, 

 spreading, clear honey-yellow, at base brownish, later 

 whitish and becoming gray, about 34in. long ; centrals 

 3^, similar, only somewhat stouter and darker : fls. 

 usually abundant, straight or slightly S-shaped, 4-5 in. 

 long, scarlet-red : fr. spherical, reddish green, covered 

 with bristles. Southern Mex. B.M. 3768. 



BB. Sibs of stem, S-5. 



54. nycticalus, Link. Night-blooming Cereus. Sub- 

 erect, very lo]i^'-j..inted, K-l in. in diam. : joints vari- 

 able, some cyliMilrical. others 4-6-angled : ribs acute 

 at ilrst, (>l)tiis(_- later : spines 1^, and very small : fls. 

 white and fragrant, about Tin. long. Mex. — The com- 

 monest Night-blooming Cereus. 



55. inSrmis, Otto. Sts. branching, climbing, branches 

 4-5-angled, sharp-winged, yellowish green, later darker, 

 slightly crenate : areolae in the depressions, small, 

 bearing a few bristles when young, but soon naked. 



Ven 



ela. 



56. hamsttus, Scheidw. (C. rostr&tus, Lem.). Stems 

 slender, weak, climbing, bright green, less than 1 in. in 

 diam., reaching a length of 10 ft. : ribs remotely serrate, 

 the serrations repand, and bearing on their anterior 

 edge the small areolae: spines 5-6, bristle-form, whitish 

 to brown, very short and partly deciduous : fls. large, 

 10-16 in. long and nearly the same in diameter, white, 

 nocturnal. Central Mexico, 



58. Napole6ni8, Graham. Suberect and long-jointed, 

 the joints :i-aiif,'lfd and with flat sides, 12 in. or more 

 long, ji-X in. in diara. : spines 3 or 4, subulate, unequal, 

 black; sometimes a few white bristles: fls. snowy white, 

 8 in. long and 6 in. broad: fr. bluish and spiny, 3 by 4 

 in. W. Ind., Mex. B.M. 3458. 



59. ext^nsus, Salm-Dyck. Climb^'ng : stems richly 

 branching, about 3 ft. long by about %in. in diam., dark 

 green, soon becoming covered with gray-yellow, corky 

 flakes : 3-angled. angles blunt, later becoming depressed, 

 so that the older stems are cylindrical : areolae J^-2K 

 in. apart, white, becoming gray: spines 2-4, very short 

 and strong, straight or very slightly curved, dark brown, 

 becoming gray with age : fls. from the sides of the 

 branches, 8-9 in. long, rose-red. Trinidad. B.M. 4066. 



00. triangularis. Haw. Stems jointed, long and slen- 

 der, climbing : ribs 3, compressed, thin, and about 1 in. 

 or more high, crenate, with a corneous margin connect- 

 ing the areolas : areolae about l-l)-^ in. apart : radial 

 spines 2—4, bristle-form, short, soon deciduous ; centrals 

 1-3, conical from a bulbous base, dark colored : fls. 

 large, about 1 ft. long by about the same diameter when 

 fully open, white, nocturnal, tube covered with large, 

 leaf -like scales : fr. large, covered with the persistent 

 large scales. Mexico and West Indies. B.M. 1884 Mn. 

 0:5.— The fruit is edible and very refreshing, and is 

 common in the Mexican markets. 



BEB. Itibs incnnxpicuous or wholly absent. 

 61. UacDbnaldise, Hook. Climbing, and of rapid 

 growth, richly branching, branches very long, cylindri- 

 cal or with here and there very obtuse and not continu- 

 ous angles, dark green : areolae elevated on tubercles 

 which are arranged spirally on the branches, small : 

 spine solitary (or rarely 2), short, porrect, brown or 

 black, inconspicuous : fls. Lateral, about 14 in. long, white, 

 nocturnal. Honduras. B.M. 4707. 



The following horticultural names, in the Amer. 

 trade ire not accounted for in the foregoing synop- 

 sis C Ohlldsti, C divffrsispina, C. erectus, C. fari- 

 ndsus fragilis, O, Qebseri, O. Quadalupdnus, C. 

 Zaucacdn 



The following names, in the Amer. trade, belong 

 to Efhmocereus: C. Berlandi^ri. C. ctespitdsus, C. 



chloranthus C 



O dasu 



until I 



gonacan 

 vensis, 

 O pha, 



nd 0. ! 



oideus, C. ctenoides, 

 iitbius, C. Engel- 

 iix. O. Fendleri, C. 

 n situs O. Muja- 

 IS. O. pectindtus, 

 iiiiibens, O. Rost- 

 i I , O. stramineus, 



'■iifUS. 



iiilia. CNickeUii 



Minor, 



Cerinthe retorta, 



57. B6gelii, Hort. This form is very common in the 

 trade; is a very excellent plant, with good, fixed char- 

 acters ; is a slender climbing plant. Its origin is ob- 

 scure, but, from its vegetative characters, as well as 

 floral, it is apparently closely related to either C. hama- 

 tus or C. MacDonaldice, with one of which it may be a 

 hybrid. 



John M. Coulter and 

 C. H. Thompson. 

 CEKlNTHE (Greek, keros, wax; 

 anthos, flower : the ancients be- 

 lieved that the bees visited the 

 flowers for wax). Boragindcew. 

 About 6 species of annual or per- 

 ennial herbs from Europe and Asia 

 th alternate, glaucous Ivs. and showy purple 

 bracts. The best species is C rctoWn, which has a unique 

 appearance in the garden, and is strongly recommended 

 for more general cultivation. It is a hardy annual of 

 easy culture. For a garden review of the other Honey- 

 worts, see Gn. 41, p. 212. 

 retdrta, Sibth. & Sra. Honeywort. Fig. 415. Height 

 ft. : Ivs. glaucous, often spotted white or red ; 

 lower Ivs. obovate-spatulatc ; upper Ivs. amplexicaul, 

 with 2 round ears, on ilir tlowi'riiig branches gradually 

 becoming smaller and ilnsir toi^i-t her until they pass into 

 purple bracts, which fcmn the cliief attractive feature of 

 the plant : fls. when full-blo^vn protruded beyond the 

 bracts : corolla tubular-club-shaped, yellow, tipped pur- 

 ple, with 5 small, spreading teeth. Greece. B.M. 5264. 

 Gn. 41:847. w. M. 



CEB0F£GIA (Greek, wax and fountain, the flowers 

 having a waxy look). Asclepiadicece. Greenhouse vines 

 of Africa and .\sia, not in the Amer. trade. A dozen spe- 

 cies are known in ohl Wijrld collections. Many of them 

 have tuberous roots, and need a season of rest and dry- 

 ness. Prop, by cuttings. Odd and handsome. 



