45 



Cacti.— Orcutt. 



46 



plant of Sonorn. New Mexico, rhitmahna. Tex- 

 a^ atid Arizona- the rlants from San Luis Poto- 

 si is a distinct .'■pe(rie>. 

 MAMMILLARIA SCHEERII Muchlpf. 



"Gloljosa miiltii)lcx: mainiiiillis sul.gldbosis 

 sui>eine sulcatis; iu-uleis radiatitibus 20-22 albis 

 adpressissubdistichis. centraliiuiK i reeiisfus- 

 c'is. infiino valde elongatoH-lO lin. longo "'-AGZ 

 1845 ;M6; IWt), 373, is polymorpba [conoideaj. 



See salmdyckiana. 



Subgenus DOLICHOTHELE KS. 



MAMMILL/ARIA LONGIMAMMA P SC. 

 MAMMILLARIA SPHAERICA S. 



Subgenus LACTESCENTES. Plants de- 

 pietsetl-glolose, rarely a little elongated; 

 juice miiiiv; tubercles usually angular 

 and somewhat leathery. Flowers as in 

 Eumamiilaria, but mostly small. 

 MA^.MILLAHIA ANGLLARIS L-O. 

 MAMMILLARIA CAPUT-MEDUSAE 



Otto. 



Near Zimipan.i Mexico. 

 M. DIACliNTRA Jat obi AGZ 1856, 91. 



"Anfi;nlos?e tet'-agron*. Paule spha?roideo, snb- 

 umliili'-ato saturate viridi laoteseeute. M m- 

 illis ad basin riiomboideis. obtu-e pyramidali- 

 biis apice latcaliter applanatis; pulvillis ovali- 

 biis glab.issv'biipicalibns: axil issjuiiioribus nu- 

 dis, liein lloccose aibo-laiiaiis, serius cenuo nu 

 dit . setibus radialibus f>-ii, diaphane albidis 



apice subsphaceiatis. serius ubique albidis, 

 subulrtti.s vix patulis, subfus et iuferne recuv- 

 vulis ladiantcr posilis, 2 aiit 3 siipcrioribns bre- 

 vissimis,3 inf<»rioribus altero tamo j.^iirioribus; 

 nouleis centralihu8 2, multo validioribus longio- 

 ribusqiie, junio ibU8 t'inereo-b'unneif apiie ni- 

 gris. dein canieo cinereis apioe nisricansibus, 

 superioieerecti gensim recurvato, inferiore 

 rccte pateiiieinferne recurvuio. utroqne earum 

 basin >emi tt-rete. iipice rotundato, inferiore 

 feri- altero lamuiii lonsiore. Klores parvuliru- 

 bicnndi, tubo brevissinio, circa ovarium ventri- 

 c se dilatato. superne coarctato, pefalis lanceo 

 lati-. bri-viter n-curvatis, ro>eis cum linea media 

 purpurea. Staniioum filamenla ro^ea anthn- 

 ra-que sordide Hav;u: stylus staniinibus luiijiior 

 rosi'us, slvtrmntibus fi (• luoloribus. Floret 



mensibUK Junio --t .lulio Plaiita discripla alti- 

 tudiiie trii'oilicari diHmefroqiic poll. .I'j. Aeu- 

 leoru'i radiali' m liant 3 superi lin. 1, ceteri :^, 

 liii. 2 lortii; acule irnm ceiitraliuni superior liu. 

 (i-8lon!rus, inferior pollicari set utra." 

 MAMMILLARIA FORMOSA Scheidw. 

 M. KL'NKII Scheidw AGZ 1841.43.— 



"1 actescens, robusta, umbilicara, lae"e virid- 

 is; axillis nudi;-, tandem criniferii; orinibus al- 

 bis apice nisrescentibug e.\ mox unicoloribus; 

 Hianmiillis pyraniidato-tetraedris: areolis inf a 

 apic'cn. niammillarum immersis, nudis, juniori- 

 bns vix tonientosis; a^ iileis 8 ma.xime in*qiiali- 

 bus, cenlrali 1 longissimo incurvulo. nastcnti- 

 bus fuscis. tandem Rriseis. Truncus 3 poll 10 

 Jin altus, diametro (> pollicari; aculei exteriorts 

 ^4-1-2 'in. longi, centralis 3^2-6 lin. longus." 



Mexico. 

 MAMMILLARIA GABBII Engelm. 



Cactus gabbii Coulter, U S na Hb cont 

 S:109:— 'Globose, 5-10 cm in diameter, sim- 



ple, tuberelfs cylindrical, slender, 12-14 

 rrm Icng, with woolly axils; radial spines 

 about 13, 5-8 mm long, lower ones longer 

 and stouter, especially the latest ones 

 pectinate; the central shorter, straight 

 and robust; flowers small, yellowiSh-red; 

 fruit unknown.— Tyfe in Herb. Mo. Bot. 

 Gard. Among rocks, from San Ignacio 

 to Mission San Fernando, Lower Califor- 

 nia." 



Near San Quintin bay, Baja Cal. (Or- 

 cutt). 



Cactus brandegei Coulter, U S Na Hb 

 cent 3:76. 



MAMNflLLARIA GFMINATA Pche'dw. 

 — "Lactescens, trunco geminato; vertice umbil- 

 icato; iixiliis iMUHtis; man millis tetragono-pol- 

 vajdris, viridilms; aie.lis jiiiroribus li^niitis, 

 dein inidis; aonleis L'Xteriiiribu.s G rectis. stcUa- 

 tis, apici' iiiarrcscfiiiibus; rcnirali 1 validiore 

 cnrvnla nisro Vamniil a> 4 lin. long:e: aculei 

 e.vteriores 2'<; li". long' centralis lonsitnd'ieS 

 lin."-AGZ is4'.42. 50U0 ftalti ear Oax.,ca. Mex. 



MAIV'MTLLARIA GIGANTEA Hildm. 

 MAMMILLARIA GUMMIFERA E. 

 MAMMILLARIA FEES SANA Mac Dow. 

 MAMMILLARIA HEYDERI Muehlenpf. 



"Globosa, vir'dis, veitice iinpiesso, axtllis 

 jui ioribns 'a''Rtis, mamillis conicis, elongatis, 

 6 liiieas longis, Slineas la'i* areolis juiiioribus 

 albotomentosis api<-e mnmillariini dispositis; 

 aculeis radiantibus 20-22 albis se'ace's. infeiiori 

 robn-tjoii panlnlum el nga'o, cen'rali 1, erei-to 

 cornro basi api' <'(iue fiis'-o 2'o'-3 lineas longo." — 

 Mhlpfdt A(iZ1848.20. Texas. 



RCijel (larten flora 1880, 52, f. 



Scheele. Boem Texas, 435(1849). 



M. KRaMERI MuehpftAGZ ISJfi, 347: 



"Globosii. basi tandem prnlifera: axillislnna- 

 tls; mainmillis angulosis pyraniidalis, juniorl- 

 bus lanatis, aculeis exterioribus 4-5 rigidis, 

 central! 1 elongate 1^-2 poll, longo, omnibus al- 

 bis apice niffris Die pflanze ist aus Mexico, und 

 erhielt ich dieselbe vom Kramer in Hamburg, 

 unterden Namen M. macrantha." 



Runge sent under this name from San Luis 

 Potofi, whi h bore flowers %inch long, }4 inch 

 across, 12 maroon purple sepals. 16 white ])etals 

 with maroon midvein, 6 stigmata, style, fila- 

 ments and anthers white 

 M Schmidtii (schmittii) Ske. 



M. LEUCOTRICHA Scheidw AGZ 1840,338: 



"M. lactescens, simplex vel ca?spitosa, cylin- 

 drica, vertice umbilicato; mammillis pyramid- 

 atis quitdrangiilaribus; axillis primo nudis, 

 tandem lana abunrianti; aculeis criniformibus^ 

 albis munitis; areolis rotundis lana albainsfruc- 

 tis; aculeis exterioribus 6, centrali 1, omnibus 

 rigibis subiecjualibus fuscis, tandeno carnei.s api- 

 ce sphacelatis. Fructus pyriformis; flores ad- 

 huc ignoti " Mexico. 

 Jacobi AGZ18.il, 11 

 fee maschalacantha. 



