516 



KCHIXOCACTU: 



ECHINOCACTC! 



diam.), profusely branched at base: ribs 13-21 (occa- 

 sionally 10) : spines B-15, very stout and compressed, 

 more or less recurved and reddish; radiaU 4-11, com- 

 paratively slender (the uppermost the most slender), 

 1-2 in. long; the 4 centrals much stouter and longer 

 ( 1 X to two and four-fifths in. ) , very unequal, the upper- 

 most one usually broadest and curved upward, the low- 

 est one usually the longest and deeurved: flowers yel- 

 low. From Utah to northeni Mixii... 



41. viridfisoens, Nutt. i.l. .'-.-.■ -r ^L pr 1. Mniplr 



or branching at base, 1-1 liun.; 



ribs 13-21 (fewer when >'.!- ■ i.i;. 



tuberculate: spines miM--- <.i n -^ . u i \ > u .i [in -mii* i mmis 

 twisted, reddish below, sliailiim mi./ i;i.-<-iii»h ui >elluw- 

 ish above; radials 9-20, two-lifllis to four-tifths in. long, 

 the lowest shortest, robust, and deeurved; centrals 4, 

 cruciate, much stouter, compressed and 4-angled, four- 

 fifths to one and two-fifths in. long, the lowest broadest, 

 longest and straightest: flowers yellowish green, about 

 one and three-flfths in. long. Southern California. 



42. Lec6lltei, Engelra. Resembles Wislizeni, but 

 often somewhat taller (sometimes becoming 8 ft. high 

 and 2 ft. in diam.), usually more slender, and at last 

 clavate from a slender base: ribs somewhat more inter- 

 rupted and more obtuse: lower central spine more flat- 

 tened and broader, curved (rather than hoolsed) or 

 twisted, usually not at all hoolted, sometimes as much 

 as B in. long: flower rather smaller. From the Great 

 Basin to Mexico and Lower California. 



43. SUeri, Engelm. Globose : ribs 13, prominent, 

 densely crowded, with short rhombic-angled tubercles: 

 radial spines 11-13, white; centrals 3. black, with pale 

 base, three-flfths in. long, the upper one slightly longer: 

 flower scarcely 1 in. long, straw-colored. Utah. 



41. GrtiBonl, 



ildn 



r.],. 



by. 



of 



the plant the appi-:iraiH 

 4, curved; flowers red :unl \i 

 — From illustrations it is l\ 

 are somewhat numerous nm 

 the centrals are prominent i 



45. SaltilMnsiB, Poselg. Very stout, globose : ribs 

 15-19, compressed, dark green: spines very prominent, 

 .5-7 in a cluster, stout and porrect, sometimes becoming 

 Gin. long; centrals 4. Mexico. — Schumann makes this a 

 variety of E. ingens. 



ccc. Bibs 30 or 

 4fi. Sodpa, Link & Otto. More < 



' less cylindrical, 1 ft. 

 or more high, 2-1 in. in diameter, at length branching 

 above : ribs 30-30, nearly vertical, tuberculate ; radial 

 spines 30-40, setaceous, white ; central spines 3 or 4, 

 purple, erect ; sometimes all the spines are white: flow- 

 ers yellow. Brazil.— The species is exceedingly plastic 

 in form, branching variously or passing into the cris- 

 tate condition. 



BBOB. Central spines 5-10. 

 47. piWsus, Gal. Globose, G-18 in. high : ribs 13-18, 

 conipresseil, little if at all interrupted : radial spines 

 rcpresfiitcd by 3 slender ones at the lowest part of tlio 

 pulvilhis t,r wHTiTing; centrals G, very stout, at first pur- 

 jilish. I. .r.. mini,' piUe yellow, the 3 upper ones erect, the 

 3 Inwc r ic . ui\ .(Ispreading: flowers unknown. North- 



IS. Simpsoni, Engelra. Subgloboseordepressed,turbi- 

 n;(i' :ii Im-i . ^Mri|ili'. often clustered, three and one-fifth 

 t" li . . III. iM ili:nii. : ribs 8-13, only indicated by the spiral 

 arrani^^Mi' Ht *>f the prominent tubercles, which are % 

 to three-tifths in. long, somewhat quadrangular at base 

 and cylindric above : exterior spines 20-30, slender, 

 rigid, straight, whitish, %-% in. long, with 2-5 addi- 

 tional short setaceous ones above; interior spines 8-10, 

 stouter, yellowish and reddish brown or black above, 

 erect-spreading, two-fifths to three-flfths in. long ; no 

 truly central spine: flowers three-flfths to four-fifths in. 

 long and nearly as broad, yellowish-green to pale pur- 

 ple. Mountains of Colorado, Utah and Nevada. 

 AAA. Spines entirely wanting. 



49. turbiniJfirmis, Pfeiff. Depressed-globose, grayish 



gre(. 



ith 12-14 



-V..1 



■s, gr 



ne pi 



L-ry cha 



50. myrioBtigma, Salm-Dyck {Asfrophi)tum myrio- 

 .iliijmti, Lcm.). Fig. 740. Depressed-globose, 5 in. in 

 diam.: ribs 5 or 6, very broad, covered with numerous 

 somewhat pilose white spots, and with deep obtuse sin- 

 uses: spines none: flowers large, pale yellow. Mexico. 



51. Wniiamsii, Lem. {Anhalbnium Wll- 

 liamsii, Lem. Lophipliora WiUiamsii. 

 Coult. ). Hemispherical, from a very thick 

 root, often densely proliferous, transversely 

 lined below by the remains of withered tuber- 

 flrs : rilts usually 8 {in young specimens 

 nficn I'll. VI ry broad, gradually merging above 

 into the (li^rinrt nascent tubercles, which are 

 ciowni il with somewhat delicate pencillate 

 tufts, whiil] l.ici.mn rather inconspicuous pul- 

 villi 111] till- fills: Hnwcrs small, whitish to rose. 

 ■Pi-N.-is :nnl Jlrxiiii.-Thc well-known "mescal 

 buttun," ns.il l.y thv Indians in religious rites. 



52. Lewinii, Ilrnnincrs {Anlinlfinium Lew- 

 iiin, llcniiin(;s. /...phniihonl I., irii,ii,CmM.) . 

 I.ik.' K. Willniws.i. lint ;i mn.h more robust 



prominent tufts. Along 

 John M. Gov 

 UPS of Echinocaoti mny b 

 Echinocereus and Muiin 

 IS and Mammillaria ni<- 

 clly by the way in which 

 -terminal on the tubercle 

 Mary to tubercles or 



th Echinoeacti. 



former, 



the latter. In external 

 very similar. Some spi 

 to either genus or to 

 mieromeris (Pig. 302) i- 

 to be an Echinocactus 

 blances between these 

 seen by comparing the 

 745 and 740 with the Mai 

 See, also. Figs. 1355-7 v 



