ECHINOCEBEUS 



ECHINOCEREUS 



517 



ECHINOCfiEEITS (s 



short funuel-form; M\:iry anl iuIm' i'..\.riil \\;Tli l>rarts, 

 from the axils of whi.li ;iii' |.r"Mu>'r(l t., a :;r,ai.i-..r li-ss 

 extent wool, bri^tl-s ainl s|'iiii-^: !r. L^ltilm-r tn ellip- 

 soidal, corered with spines until ripe. The senns is so 

 closely allied to Cereus, and merges so gradually into it, 

 that it seems impossible to draw a sharp line of dis- 

 tinction between them, and, indeed, by some authors 

 they are combined under Cereus. For culture, see 

 Cactus, Cereus, and Echinocactns. 



adustus. 24. Engelinannii. l.*^. profwuibens 



Berlandieri, 3. enneaeanthus, 0. rigiilissimus 



Blankii, 4. Fcnilleri, 12. Rojtteri, 11. 



csBSpitosus, 24. gonaeanthus. 9. mtispinus, 2 



chloranthus, 20. lougisetus, 10. Scheeri, 2. 



chrysocentnis, 13. Merkeri, 8. 



viriditlorus, 21. 



Mojavensis, 16. triglochidii 



conglomeratus, 14. paueispinus, 9. 

 conoideus, 17. pectinatus, 24. 



ctenoides, 23. phoemceus, 17. 



dasyacanthiis, 22. 



A. Stems small, slender, cylindrical, much resembling 

 Cereus. 



1. tuberdens, Biimpl. {Cereus tuberdstis, Poselg. ). 

 Stems cylindrical, upright, or later re<liiiiiit.'. .hi^t.red, 

 from a number of more or less glol.uhir nr . Ili|i-.ii<lal 

 tuberous roots, the lower part wooily an'l .ilniut tin- size 

 of a lead pencil, the upper part more Heshx . aliui '_.in. 

 in diam., reaching a length of 1-2 ft.: ril.s alii.iii ,s, 

 straight, low, rounded : areolfe very close tou-cilier : ra- 

 dial spines 9-12, horizontally spreading, striuL-lit, white. 

 thin subulate, Tery short ; central solitary, Mil.uhit.-. 

 from a tuberous base, about twice the leut;tli i>( thu 

 radials, white or brownish, with darker brown or black 

 tips, directed upward, appressed: fls. from the end of 

 the stem, about 2 in. long, tube covered with an abun- 

 dance of white wool intermingled with bristles, rose-red 

 to purplish : fr. ovoid, green, covered with the white 

 wool and bristles. Tex. and northern Mex. 



AA. Stems prostrate, sometimes the brandies upright 

 when young, mostly less than 1 in. in diam. 



2. Scheeri, Lem. (Ceretis Scheeri, Salm-Dyck). 

 Branching freely from the base of the stem and forming 

 dense clusters ; branches upright or ascending, about 

 8 in. long by 1 in. in diam., slightly tapering toward the 

 apex, dark green: ribs 8-9, straight or sometimes in- 

 clined to spiral, separated above by sharp grooves, which 

 become flattened toward the base, low arched: areolae 

 little more than Min. apart, round, yellowish white: ra- 

 dial spines 7-9, spreading, needle-like, the under pair 

 the longest, about H-Ve in. long, white with yellowish 

 bases; centrals 3, the lower the longest, about Vaia., 

 red with brown bases ; later all the spines become gray : 

 fl. red, from the upper part of the stem, about 5 in. 

 long: ovary and tube bracteate and furnished 



abundance of wool and s 

 3. Berlandiferi, Lim. ( 

 Stems prostrate, re h! 

 ters, the branche- ., r 

 longer by X-J4 in : 

 young growth often jun 

 as many straight er si-i 

 conical, pointed : 



Mex. 



Birlandieri. Engelm.). 

 11:,'. forming dense clus- 

 eiiding, 2-3 in. long or 

 J ' 1 1 ( »r dark green, and in 

 111 IS 5-6, broken up into 

 s u£ tubercles, ttil.creles 

 iipart, 



straight, thin, white or the upper ones carmine-red 

 when young, later reddish brown; central solitary, por 

 rect, later deflesed, 1-1 M in. long, white or brownish, 

 black when young : fls. from near the crown, 2K-3 in. 

 long, purple-red to violet. Mex. R.H. 1865:90. 



5. procumbens, Lem. (Cereus procumbens, Engelm.). 

 Branching from the lower part of the stem, and so form- 

 ing clusters : branches procumbent or ascending, an- 

 gled, at the base tapering into cylindrical, lK-5 in. 

 long by H-H in. iu diam. : ribs mostly 5, rarely 4, 

 straight or spiral, on tie- ii]i]ier ]"irti.iii ,.i' tlu- l.raiiek 

 almost divided into tiiliei-rle^ : aieel.e ', \. iie apart, 

 round, sparingly wliiti- eurlv «. I,. Ill , ,,„,e nal^e,! : ra- 

 dial spines 4-6. sutmhite, siitV. Mi-amlii. ^Iia]|i, in m.uii in- 

 growth bro-ivnish, then wliile, ai ilie l.a-e ,,11, u x.'ilew- 

 ish and the tip brownish, htirizontalls s[eeailinL: , the 

 upper the longest, reaching M in. in hiiLih: . .ntr.il 

 solitary, or absent on the lower iireel.e. seiiewhat 

 stronger, ? 8-5-8 in. long, darker : lis. lateral, Iruin je.st 

 below the crown, 3-4 in. long, carmine-red to violet, 

 with white or yellowish throat: fr. ellipsoidal, green, 

 % in. long. Mex. 



ally, soon naked: radial spines fi-S, stitf bristle-term, 

 thin, horizontally spreading, white, about '» in. leiiLr, 

 the upper one sometimes light brown and semewliat 

 stronger ; central solitary, yellowish brown, sometimes 

 reaching % in. in length : fls. from the upper lateral 

 areolae, 2-3 in. long, red to light pink: fr. ovoid, green, 

 bristly. Southern Tex. and northern Mex. 



4. BlAnkii, Palm. {Cereus Blankii, Poselg.1. Branch- 

 ing freely from the base and thus forming clusters; 

 stems columnar, tapering above, about 6 in. long by 

 1 in. in diam., dark green: ribs 5-6 (rarely 7), straight, 

 almost divided into tubercles: areolfe about % in. apart, 

 round, white curly-woolly, later naked ; radial spines 

 mostly 8, horizontally spreading, the under pair the 

 longest, reaching about % in. in length, all stiff. 



6. enneacinthus, Ehl- 



Engelm.). Free!, leaiel 



thus formiti-^ ,1 



cending, usui:: 

 green or sonieTme - r. .i. 

 divided by transverse 1 

 spicuous tubercles : areolfe \ 



(Cereus enneacdnthus, 

 the base of the stem, and 

 clusters : branches as- 



ribs 8-10, straight, often 

 5 into more or less con- 

 apart, round, white 



curly- woolly, soon naked: radial spines 7-12 (mostly 8), 

 horizontally spreading, needle-form, straight, stiff, 

 translucent white, base bttlbose, the under one longest, 

 reaeliiiiix alioiit 'jiii.. tlie upper one very short; central 

 Military, ur seMnni with two additional upper ones, 

 straiL'lit. ]i.irre(t ur deiliMil. round or angled, whitish to 

 straw-yellow or darker, U-l'i in. long; later all the 

 spines' are gray : fls. lateral, from near the crown or 

 lower, 15^-2 i4 in. long, red to purplish : fr. spherical, 

 green to red, spiny, %-l in. long. Tex. and northern 

 Mex. 



Stems 1 



7. diibius, Rilmpl. 

 erably thickly cluste 

 cylindrical or elong; 

 lyi-iM in. in diam. 

 in. apart, round. 00% 

 later naked: radials 



»i,.,v Ihan 1 ill. 



lials .'j-b, siiljulate, hurizuntally spread- 

 er faintly angled, the lower ones 

 u'est, about 1 in. long, the upper ones 

 iini.', or sometimes absent, transparent 

 1-4, stronger ami longer, bulbose at the 



J in. long, rose-red 

 |inrple-red, covered 

 Tex. and northern 



base, straight or curve,]. 1 

 lowest one longest, - ■ 

 upper ones spreading 

 to violet: fr. spherieal. jv 

 with bundles of deciduous 

 Mex. 



8. Mferkeri, Hildm. Stems at first upright, columnar, 

 later reclining, and by branching at the base forming 

 clusters, in new growth Iiriglit green, later gray to gray- 

 brown and corky: ribs 5-9, undulate to more or less tu- 

 berculate : areolie ?-iin. and more apart, round, white 

 velvety, later naked : radial spines 6-9, the iipper ones 

 the longest, reaching IJi in. in length, somewhat eon- 

 fluent with the centrals, subulate, spreading, straight; 

 '•entrals 1-2, stronger, reaching a length of 2in. ; all the 

 spines are white, nearly transparent, with^ red-tinted 

 bulbose base. Northern Mex. 



9. paueispinus, Rilmpl. (Cereus paueispinus, 

 Engelm.). Clustered in irregular bunches : stems cy- 

 lindrical to ovoid, 4-7 in. high by l?4-3 in. in diam. : 

 ribs 5-7, undulate : areola} %-■;» in. apart, round, white 

 woolly, later naked: radial spin, s :;-i\. spreading, subu- 

 late, straight or curved, rouml, liiiliiiise ,ti tlie base, the 

 lowest one longest, reaching 1 in., liLlit eulered, the 

 upper ones reaching to about 'j in., reil.lisli or brown- 

 ish : central solitary or none, reaching about 1% in. in 

 length, somewhat angled, bromi-black, porrect or up- 

 riglit : Later all the spines blackish: fls. 2 in. or more 

 long, dark scarlet to yellowish. Tex. and Colo. 



