CEREUS 



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

 5-7 and a solitary central one, uniform, about •ys-%in. 

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

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

 white, nocturnal. Uruguay, Brazil, Columbia. B.M.408-i. 

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

 larger form of this species. 



43. princeps, PfeifE. (C. jBaiani^Msis.Karw. C.varid- 

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

 3-or 4-angled: spines 4-6, stout and r;i"li;iTit, inirf|ii:il, the 

 largerl-U^in. long: fls. white, lonu' I''"' i! -!•■ l-nisr: 

 fr. oval, spiny, 2-3 in. long, scarlet . ;i i - nd 

 pulp. Lower Rio Grande, on Mv\. I "iini,' 



shoots are said to have 8 ribs and iriii m i -i- ^Icii- 



der spines, and in cultivated forms the spim/s :ub often 

 much longer than given above. 



44. B6iiplaiidii, Farm. Stems at first upright, later 

 clambering over rocks and bushes, about 1-lHin. in 

 diam., branching and spreading, in new growth com- 

 monly of a bluish or purplish green, later gray-green : 

 ribs 4-6, sharp, compressed, crenate, separated by broad, 

 concave faces; later the ribs become much depressed, so 

 that the stem is sometimes nearly cylindrical ; the ribs 

 commonly run spirally around the axis of the stem : 

 areola K-lJ^in. apart, at first considerably depressed, 

 later shallower, white, becoming gray : radial spines 

 4-6 (later 1-4 more appear), straight, spreading, the 

 largest about 14-1 in., stout, subulate, pointed, the under 

 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 areolse, about 10 in. 

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

 in diam., mammate, dark cannlne-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 3-4 ft., and 1-lKin. in diam.: ribs 

 commonly 7, sometimes but 5, rounded, low, separated by 

 regular serpentine grooves : areolae about 1 in. apart, 

 large: radial spines 5-8, about %-l in. long: centrals 1-4, 

 about Ji-l^in. long ; all the spines slender, rigid, red- 

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



length, trum- 



the previous year's growth, about ( 

 pet -shaped, tube olive,- green and 

 spiny, in the axils of the reddish 

 green scales ; oiiter petals pale green, 

 tinted with brown ; inner petals 

 clear white : fr. spherical, bril 

 liant red without and white withm, 

 mammate, bearing a few spines on 

 the summits of the lower mammas 

 Argentine Republic. 



46. Martinii, Lab. (C. mnnacaii 

 thus, Hort.). At first upright liter 

 requiring a support; freeh branch 

 ing from the base, branches long, 

 reaching nearly 5 ft., ?i-l in mdiam , 

 slightly tapering, dark green ribs 

 5-6, separated by serpentine grooves 

 contracted between the areolee some 

 times the ribs are not evident when 

 the stem is cylindrical: areolae about 

 1-lK in. apart, white: radial spines 

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

 bulbous bases or short conic il usu 

 ally about % in. long ; central soli- 

 tary, mostly deflexed, K-1 in. long 

 (in young growth, frequently not 

 longer than the radial), subulate, 

 robust, light brown or white, with 

 bases and tips black : fls. from the 

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

 turnal : fr. spherical (very similar to C. ' 

 pointed, dark carmine-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. 



CEREUS 283 



AAAAA. stems more or less climbing, attaching them- 

 selves to trees, walls, etc., by means of aerial 

 roots. 



B. Bibs of stem 5 or more. 



47. SlagelliSdrmis, 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 : si)inf's 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, 

 .'.,in. in diam., reddish and bristly, the pulp greenish 

 yellow I '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. l^ptophis, 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. 



48. Mallisoni, Hort. {C. Smithii, Lindl.). This is a 

 garden hybrid of C. flagelUformis on C. speciosus. Habit 

 of C. flagelUformis, but stouter : fls. more like those of 

 C. speciosus. B.M. 3822. 



49. Donkelieri, Salm-Dyck. A bushy epiphyte, richly 

 branching, clinging to the bark of trees by aerial roots, 

 commonly in company with orchids ; branches very 

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

 inconspicuously 6 angled or rarely 7-b angled areolae 

 vei> close together small white spines 10-15 very 

 shoit snow white sometimes 2-^ short strcnger 

 spines appear m the center of each cluster fls resem- 

 bling those of 6 giandifloi Id Brazil 



oO grandiUbrus Mill Fkacrant Night bloojiino 

 Cekeils ii„ 414 Diffusely creeping with very long 

 an I rt \u u hiiibing 5-7 angled branches \-l m. in 

 di nil \Mtli 1 111 h of white bristles associated with the 

 5-1 h It ] 111 tls white and fragrant 6-8 m broad. 

 ■^ In 1 M \ 1 M «81 -Long cultivated m gardens as 

 the \i.,ht 1 I niing Cereus and made to vary widely. 

 C Uianoi Hort is but a form of this species 



51 Miynardii Lem (C grandiflbrus var M&ynardii, 

 Hort ) A garden h>brid of C grandifloiiis on C spe- 

 ciosus Habit of C giandifloius but red colors of <7. 

 speciosus 



Cereus grandiflorus 



ing Cereuses (X %). 



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

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

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

 ing obliterated with age : areolte 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 



