ECHINOCACTUS. 



CACTEAE. 321 



ceolata basi subcarinala, arcualim erecla, duabus adstanlib. dimidio^ breviorib. 

 angusliorib. magis terelib. ensiformib. divergenlib., radianlib. situ formaque ali- 

 quomodo similibus. — Ilabitat ? 



98. E. LAiNCIFER Alb. Diclr. in OUo et Dielr. Gartenzlng. VII. 154. f — Globosus: 

 verlicc depresso aculeatissimo; coslis numerosis, valde compressis undulalis; 

 areolis lateralib. rcraolis, verlicalib. approximatis, juniorib. tenue tomentosis ; acu- 

 leis 8 albidis, apice fuscescentib., laleralib. setaceo-subulatis planiusculis, centrali 

 unico lineari-subulalo plano reclo; llorib. ad verlicem spinis obvallatis; corollae 

 lubo brevissimo. — E. obvallalus Pfeifl'. Eiium. Cact. ex p. nec DC. — Mexico. 



99. E. IRRORATUS Scheidw. Bullelin de TAcad. de Bruxelles VI. no. 2. p. 3. — 

 Globosus amoene viridis laevissimus: vertice depresso ; costis 18-21-22 arcuatis 

 compressis obtusis, ad latera et super cristas costarum purpureo-slriato-macu- 

 lalis, sinubus acutis; areolis magnis elliplicis immersis, adscendentib. tomentosis, 

 adullis nudis; aculeis exlimis graciliorib. rectis rigidis patentib., compressiuscu- 

 lis Iransversim slriatis albido-scriccis aut fusco-purpureis bifarie dispositis, in- 

 fimo minimo, centralib. quatuor validissimis, lateralib. et infimo subulatis trans- 

 versim strialis, supremo longlssimo subletragono annulato. — Mexico. 



Sectio IV. PHYMATOGONI Lem. 

 Costis (ubercululis. 



100. E. PECTINATUS Scheidw. Bullelin de TAcad. deBruxelles. V. 492. — Multiplex, 

 superne ramosus cjlindricus, laele viridis: vertice umbilicalo; costis 20-22 com- 

 pressis tuberculatis acualis; areolis linearib. immersis, obscure cinereis, minu- 

 tissime albido-punctatis v. pulverulentis; aculeis exteriorib. 30 inaequalib. bifaric 

 radianlib. albidis, basi roseis, juniorlb. amoene roseis, centralib. 3 parvulis reclis 

 compressis, nonnunquam basi confluenlib. brunneis. — E. pectiniferus Lem. — 

 Habilat in Mexico. 



101. E. MACKIEANUS Hook. Bot. 3Iag. t. 3561! f — Obovatus mammillosus: mam- 

 millis magnis conico-depressis in costas 16-17 subregulares dispositis, apicibus 

 lanosis; spinis 8-10 longis gracilib. patenlib. fuscis lerminatis; florib. albis api- 

 cib. rubro-tinctis. — Habitat in Chili. 



102. E. SCELOTHRIX Lehm. Linnaea XIII. Lileralurbl. 101. — Subglobosus apice 

 vix impressus pallide viridis 16-17-anguIaris: costis subverticalib. crenatis, infra 

 areolas tuberculo acuto inslructis, sinubus subacutis; areolis oblongis tomentosis, 

 juniorib. sordide albis, tandem griseis ; aculeis extimis 8-12 setiformib. albis va- 

 rie lortis, sequentib. 10-12 gracilib. rectis rigidiusculis albis, cenlralib. 5-6 lon- 

 giorib. nigricanlib. pungentissimis, saepe medio uno. Diamet. 3". Areolae 4-5'" 

 distantes, 3"' longae. Aculei extimi 5-6"', sequentes 7-8'", centrales 10-11"' longi. 

 — Habilat in Mexico. 



103. E. FOSSULATUS Scheidw. in Otto et Dielr. Garlenztng. IX. 49. t — Cylindricus 

 glaucus, verlice planus lanatus: coslis 13 spiralib. tuberculalis; luberculis com- 

 pressis obtusis, antice fossulis oblongis lapsu florum orientib. instructis; areolis 

 immersis nudis initio subtomentosis; aculeis 7, in nonnullis areolis 8, exleriorib. 

 stellatis patentib. curvulis, centrali uno robustiori erecto incurvulo, omnib. rigi- 

 dis, acicularibus corneis. — Habitat in Mexico. 



104. E. EHRENBERGII Pfeiff. in Otto et Dietr. Gartenztng. VIL 275. — Subglobosus, 

 sordide viridis, basi prolifer: verlice vix impresso lanato, sinubus profundis acu- 

 tis; costis 13 oblique adscendentib. repandis, circa areolas in lubercula crassa 

 mammaeformia inflalis; areolis ovalis, supra spinas in dorso tuberculorum pro- 

 ductis, nascentib. flavido-velutinis, tandem griseo-tomentosis; aculeis exteriorib. 

 11 gracilib. radianter patentissimis, lateralib. longiorib., centralibus 4 transverse 

 striatis, summo et infimo longissimis planatis, laleralibus graciliorib. angulosis, 

 omnib. nascentib. stramineis, mox cinereis. — E. porrectus Lem. Cact. aliq. nov. 

 17. -\ — E. subporreclus Lem. 1. c. 25. — In Mexico. 



105. E. TURBINIFORMIS Pfeiff. 1. c. — Simplex griseo-viridis, basi attenuatus, ver- 

 tice latissimo impressift: costis spiraliter adscendentib. maramillosis, Mammillariae 

 tuberculos simulantib., tuberculis basi rhombeis, parum elevalis; areolis in vertice 



II. 41 



