CEREUS 



curly hair, about Kin. long, in new growth : radial spines 

 0-7 and a solitary central one, uniform, about ^-^gin. 

 long, amber color to brown and finally gray : ils. from the 

 older growth, large, about 8 in. long, slightly curved, 

 white, nocturnal. Uruguay, Brazil, Columbia. 15. M. 4084. 

 — C. grandis, Haw., according to Dr. Weber, is but a 

 larger form of this species. 



4.3. princeps, Pfeiff. ( C. BaxanUnsis, Karw. C. varid- 

 bilis, Engelm.). Erect, 3-10 ft. high, 2 in. in diam., and 

 3-or 4-angied: spines 4-6, stout and radiiint, iiiitMiual, the 

 larger 1-1 }^in. long: fls. white, long-tnl.iil:ii , 7 ^ in. I ii:;: 

 fr. oval, spiny, 2-3 in. long, scarlet, ill M I ili !i. fc<l 



pulp. Lower Rio Grande, on Mex. I ni; 



shoots are said to have 8 ribs and Hi .- len- 

 der spines, and in cultivated foi-nis iLl .^pui^.-. ay^ ullun 

 much longer than given above. 



commonly run spirally arouud the axis of tlir -t. ui : 

 areolag K-lMiu. apart, at first considerably dr[.rr>-.,l. 

 later shallower, white, becoming gray : radial .^pinrs 

 4-G (later 1-4 more appear), straight, spreadiiiir, tin' 

 largest about K-1 in., stout, subulate, pointed, the unler 

 one needle form and shorter ; central solitary, straight, 

 stronger, 1 in. long, deflexed or porrect ; the stronger 

 spines are white, with tips and bases brown, when young 

 beautiful ruby-red, later all are gray, with black tips and 

 bulbous bases: fls. from the lateral areola, about 10 in. 

 long, white, nocturnal : fr. nearly spherical, about 2 in. 

 in diam., mamraate, dark carmine-red. Paraguay, Brazil, 

 and Argentine Republic. 



45. tortubsus, Forbes (C. atropurpiireus, Haage). 

 Stems slender, weak, at first upright, but later reflexed, 

 reaching a length of 3— t ft., and 1-lKin. in diam.: ribs 

 commonly 7, sometimes l>ut .i. rounded, low, soj^arated by 



brown when young, becoming ashy with age : Hs. from 

 the previous year's growth, aliotit (i in. in length, trum- 

 pet-shaped, tube olive,- green and 

 spiny, in the axils of "the reddish 

 green scales; outer petals pale green, 

 tinted with brown ; inner petals 

 clear white : fr. spherical, bril- 

 liant red without and white within, 

 raammate, bearing a few spines on 

 the summits of the lower mammas. 

 Argentine Republic. 



46. Martinii, Lab. (C. monacdn- 

 thas, Hort.). At first upright, later 

 requiring a support; freely branch- 

 ing from the base, branches long, 

 reaching nearly 5 ft., %-l in. in diam., 

 slightly tapering, dark green : ribs 

 5-6, separated by serpentine grooves, 

 contracted between the areolae; some- 

 times the ribs are not evident, when 

 the stem is cylindrical: areolas about 

 1-1^^ in. apart, white: radial spines 

 5-7, reddish, short, bristle-form, with 

 bulbous bases or short conical, usu- 

 ally about ^8 in. long ; central soli- 

 tary, mostly deflexed. 'o-l in. long 

 (in young growth, frequently not 



longer than the radial), subulate, 414. Cereus 



robust, light brown or white, with 

 bases and tips black : fls. from the 

 older growth stems, 8-9 in. long, clear white, noc- 

 turnal : fr. sjdierical (very similar to C. tortuosus)^ 

 pointed, dark carraine-red, about 2 in. in diam., mam- 

 mate, a few spines on the mammas, toward the base 

 of the fr. Argentine Republic. R. H. 1860, pp. 658-9. 

 — This species is commonly sold under the name of 

 C. platygonus 



B. Bibs of stem 5 or more. 



47. Ilagellifdrmis, Mill. Rat-tail Cactus. Creeping 

 or pendent, slender and very branching, cylindrical, 

 K-1 in. in diam., branches 1 ft. long or more : ribs 10-12, 

 tuberculate : spines short, rather rigid ; radials 8-12, 

 reddish brown ; centrals 3 or 4, brown, with golden tip: 

 fls. funnel-form, crimson, 2-3 in. long : fr. globose, 

 J^in. in diam., reddish and bristly, the pulp greenish 

 yellow ("with the taste of a prune"). W. Ind., Mex., 

 Cent. Amer., S. Amer.-This is commonly hybridized 

 with other species. It is a very common window plant. 



Var. Uptophis, K. Sch. (C. Uptophis, DC). Of more 

 handsome appearance : new spines on the growing point 

 carmine-red : ribs at the most 8: fls. somewhat smaller 

 and lighter. 



4H. Mallisoni, Hort. (C. Smlthii, Lindl.). This is a 

 canlrii liyl.rid of C. flageUitormis on C. speciosus. Habit 

 oi ( •. ii,i./, Iliformis, but stouter : fls. more like those of 



C.xi„',-i„siis. B.M.3822. 



t'i. Donkel4eri, iSalm-Dyck. A bushy epiphyte, richly 

 iH-aiiching, clinging to the bark of trees by aerial roots, 

 .ouinionly in company with orchids : branches very 

 long and thin, scarcely %in. in diameter, cylindrical or 

 inconspicuously 6-angled, or rarely 7-8-angled : areolee 

 very close together, small, white : spines 10-15, very 

 .short, snow-white ; sometimes 2-3 short, stronger 

 spines appear in the center of each cluster : fls. resem- 

 bling those of C. gmnditlorus. Brazil. 



50. grandifldruB, Mill. Fragrant Night-blooming 

 Cereus. Fig. 414. Diffusely creeping, with very long 

 and flexuous climbing 5-7-angled branches, K-1 in. in 

 diam., with bunches of wliiti- l.risil.v associated with the 

 5-12 short spines: fls. wiiii. :ni.l ii.mrant, 6-8 in. broad. 

 W. Ind., Mex. B.M. lilisl . - I ."Ui: .uli ivated in gardens as 

 the "Night-blooming IVnii-.," and made to vary widely. 

 C. Uranos, Hort., is but a form of this species. 



51 . Miynardii, Lem. ( C grandifldrus,va,T. MAynardii, 

 Hort.). A garden hybrid of C. grandiflorus on 0. spe- 

 ciosus. Habit of C. grandiflorus, but red colors of C. 



speciosus. 



"^^ 





\ f // 



-/ 





'^'iif^' 



ling Cereuses (X ] 



52. spinuldBUS, DC. Stems slender, climbing, reach- 

 ing a height of 8-10 ft., %-l in. in diam., branches more 

 slender : ribs commonly 5, sometimes 6, sharp, becom- 

 ing obliterated with age : areolie small, about }^in. 

 apart : radial spines about 8, very short, bristle-form, 

 brown, becoming gray ; central solitary, somewhat 

 longer: fls. 5-6 in. long by 3-4 in. in diam. .white, flushed 



