43 



Cacti.— Orcutt 



44 



long, the lowerone more rigid, 15-20 mm long, 

 brownish-black; fls deep purple, 2-3 cm long & 

 wide. San Luis Potosi; Coahuila; Nuevo Leon. 

 MAMMILLARIA CORNIFERA P DC. 

 MAMMILLARIA DASYACANTHA E. 

 Mamillaria echinus E. is radians. 



MAMMILLARIA ELJBPHANTIDENS 



Lem. 



MAMMILL.LARIA MACROMERIS E. 



MAMMIDIiARIA MUSSOURIENSIS 



Sweet hort Brit 171 [1827]. 



M simplex T-G Fl N Am 1:563 [1840]. 



M nuttallii E pi Fend 49 [1849]. 



M notesteinil Brittqn Torr cl b 18:367 [1891]. 



OactuB mamillaris Null Gen 1 :29B [1818] non l. 



Globose, 3.5 cm diam., siinple* niammaj ovate, 

 12-14 mm long, slightly grooved; radials 13-17, 

 straight, whitish, unequal, setaceous, 8-10 mm 

 long; central more robuet,' longer, puberulent, 

 or wanting; fls 2.5 cm long, stigmas 2-5; triiit 

 globose, scarlet, 6-8 mm diam., seeds globose, 

 blaofe. pitted, 1.1mm diam. .vioutana, Kansas, 

 Colorado, Nebraska, South Dakota. 



Star Cactus; dwarf; flowers yellow or 

 ■ salmon color. 

 MAMMILLARIA NICKELSAE K Br. 



"Soon and diensely caespitose, glaucous 

 and often purplish, 4-6 cm high, hemis- 

 pherical or globose; tubercles 10-12 mm 

 long, becoming quite as broad and um- 

 bricated: spines 14-18 ail radial, slender, 

 at fir^t jell^wish wLh da;ker tips, latjr 

 ad gray; lower spi es 8-:!0 mm long, the 

 uppcT one-third longer, stouter, ex end- 

 ing into the groove find forming a fas- 

 cicle, the clustered fa ciiles mt,k ng an 

 upright tuft at ihe ver.ex; Mowers o-i cm 

 In full e pansion, said t; ba b; g.it yel- 

 low with red center; -fruit unknown. 

 Southward from I firedo, Texas. Named 

 for the collector, Mrs. Anr»a B. Nickels, 

 and offered in cataloccues a-; M. Nickelsii. 

 Evi^entlv closely relatel to M. sulcata 

 Bngslm.' — Kathern,; Brandegee, Zoe, 5: 

 Cl (ag 19G0). 



Mammillaria pect.'nata E. is radians. 

 M. POTTSII Soheer exSaim ilD ed 2, 04. 



Oylindripal, 3 )-35 cm hi^h. 2. .5-3 diam, some- 

 what branching; tnliercli^s ovnte, obtuse, light 

 ly grooved, axili wo > ly, radi- Is • lender, white, 

 very nu leruu.s, rigid; centrals 6.12, siouler fls 

 pinkish; scarlet, clavate fruit. Texas; ( hia.a- 

 nua; Durango. 



Cactus pottsii OK rev gen pl 261;C miter 118 



Mleona Pos A';Z 1853, S4:— '-otelligerie M. 



caule cvlindraceo interdum prolifero dismetro 



Eollicari 4-5 p,dl. alto glauco, mamillis brevi- 

 us ronfertis;axillis laiiatis, areoli.-, nudis,ncu- 

 leis exteriorious permultis interte.xti-' albidis, 

 centralibus 8-12, exteriores superautibus ila- 

 vescentibus,summo snbcurvato albo subpurpu- 

 rascente." Nuevo Leon 

 MAMMILLARIA RADIANS P DC. 

 MAMMILLARIA RADIOSA E. 



M, alversoni, arizonica. chlo aiitha, descrti. 

 MAMMILLARIA RECURVATA E. 

 MAMMILLARIA STROBILIFORMIS Shr. 

 MAMMILLAE lA SUL'OLANATA Lem. 

 MAMMII LIRIA VIViPARA Haw. 

 Puipie and white spns cover the en- 



tire plant; flowers bright purple, 3..t cm 

 long and broader w^hen fully expanded, 

 showy. Montana, Nebraska, Colorado, 

 Idaho, Washington and British America 

 —consequently one of the most hardy spe- 

 cies known. 



MAMMILLARIA WISSMANNII Hildm. 



Section G' ANDTTLIFERAE. Cylindr c- 

 al; mammae cylindrical .long, or oval and 

 n.ore or less globose; grooves bearing 

 more or less con.«picuous glands, the 

 groo'' es often absent in young pian s, the 

 g ands sometimes n the axils or at the 

 base of the tubercles. 



MAMMILLARIA ASTERIAS Cels. 

 MAMMILLARIA BREVIMAMMA Zucc. 



Near Ziinipan. M xico. 

 MAMMILLARIA CLAVA Pf. 



"Claviito-columnaris, intense vlridis; axi'lis 

 tomentodenso albaetglandulasimpliO'' ml ella 

 instructiti, mox planissimis, nudis; mammillls 

 elongatis erectis, dorso hulcatis, hasi oblique 

 tetragoni^; areolis albo-viilosis infraapicalibiis; 

 jiculeisrectis, cornels, suba?C£ualihU9, radiaiiti- 

 bus 7, central! 1, paulolongiore, crassiore." -Pfr 

 AGZ 1840, 282. Mexico— Fhrenb.- g. 



Bot mag 1 4358 Otto & Dietr AGZ 1845, 2M-5. 



M dolichocentra Lem. 

 MAMMILLARIA DOLICHOCENTRA L.m 



Two distinct species have been fluured un- 

 der this name by Foerster, Schumann, <t Lem 



Seeclava. 



MAMMILLARIA ERECTA Lem. 

 MAMMILLARIA GLANDULIGERA 



Otto ex Dietr AOZ18i8, 298:— "obovflta, snb- 

 glancescens axillis nudis; mamillis brevlbns, 

 pyraniidatis, subteretibus. albido-puucta i-, 

 dorso glandular roseo albo instrncti-;; aieolis 

 subnudis; aculeis exteri »aibus steliatinn disiios- 

 itis numerosis flavescentibus demum a'bi , 

 centralibus ternis vel quaternis subulatis fus- 

 cis, unico patente, ceteris erectis. Mexico." 



IsOttoniifldpKS. 

 MAMMILLARIA MACROTHELE Mart. 



Near Zimipan. Mexico. 

 MAMMILLARIA OTTONIS Pf. 



"Globosa simplex obscure griseo-virens; ax- 

 illis fasciculo lanse albidse et glandula rubra to- 

 raentoalbo cincta instruetis; mammillis cra.ssis 

 mammaeformibus, basi interdum <-onfluenti- 

 bus, dorso usque ad ghindulam sulcatis; areolis 

 junioribus albo-villosis; MCuleis radiantibus Il- 

 ia subiequalibus rigidis rectis, 2 summis gr.icili- 

 oribus suberecti , flavesot nt., apice fn.'iC., tan- 

 dem fu=cu.cinereis, centralibus 3 rarius 4, (snm- 

 moplerumqne defi"iente) subdecnssatis, rigidi- 

 oiibus, cornels, inflnio longissimo i-ater.ie rc- 

 curvulo."— Pfr AGZ18;38,274. Mm^-rMldei Mon 

 te, Vexico— Eh'cnserg. 



MAMMILLARIA SALMDYCKIANA 



Scheerex Salm HD ed2, 134 [1850]. 



M Scheerii Muehpf AGZ 1947, 97, non 1S45. 



M robus:i-pina Schott ex E. 



M [Cactus] brownii Toumov bot jaz -y.-im 



See Orcutt rev 77-78 for descriiuions- ; it is Llns 

 the ua^e scU^erii .ere drupi^cd l\^i i^-is nt.o 



