43 



Cacti.— Orcutt. 



44 



long, the lower one more rigid, 15-20mm long, 

 brownish-black; (Is 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 ELEPHANTIDENS 



Lem. 



MAMMILLLARIA MACROMERIS E. 



MAMMILLARIA MISSOURIENSIS 



Sweet hort Brit 171 [1827]. 



M simplex T-G Fl N Am 1 :553 [1840]. 



M nuttallii E pi Fend 49 [1849]. 



M notesteinii Britton Torr cl b 18:367 [1891]. 



Cactus mamillaris Nutt Gen 1 :295 [1818] non l. 



Globose, 3.5 cm diam , simple; mammae ovate, 

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

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

 loug; central more robust, longer, puberulent, 

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

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

 blacs. pitted, 1.1mm diam. .ViOntana, Kansas, 

 Colorado, NebrasKa, South Dakota. 



Star Cactus; dwarf; flowers yellow or 

 salmon color. 

 MAMMILLARIA NICKELSAE K Br. 



"Soon and densely caespitose, glaucous 

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

 pherical or globose; tubercles 10-12 mm 

 long, becoming cuice as Lroad and um- 

 bricated; spines 14-18 ail raadal, slender, 

 at fir^t 3~elL,wish wi h darker t'ps, later 

 al gray; lower spi es 8-10 mm long, the 

 upper one-third longer, stouter, ex end- 

 ing into the groove and foiming a fas- 

 cicle, the clustered fa ci:ies m,.k rg an 

 upright iuft at the ver ex; nowers 5-< cm 

 in full expansion, ; aid t „• be b, git yel- 

 low wi'.h red center; fruit unknown. 

 Southward from I p redo, Texas. Named 

 for the collector, Mrs'. Anna B. Nickels, 

 and offered in catalogues a~. M. Nickelsii. 

 Evident] v cLsely related to M. sulcata 

 Bngeim.' — Kather n _- Brandegee, Zoe, 5: 

 Si (ag 1900). 



Mammiliaria pectinata E. is radians. 

 M. POTTS 1 1 Seheer ex balm H !,) ed 2, 04. 



Cylindrical, 3V-35 cm high, 2.5-3 diam, some- 

 what branching; tubercles ovate, obtuse, light 

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

 very «u ierous, rigid; centrals 6-12, S'ouier.Us 

 pinkish; scarlet, clavate fruit, lexas; C hm a- 

 hua; Durango. 



Cactus pottsii OK rev gen pi 261 ;C miter 118'. 



Mlepna .Po.s A f ^Z 1853, 94:— '-.itelligerse M. 

 caule cvlmdraceo interdum prolifero dia metro 

 pollicari 4-5 poll, alto glauco, mamillis brevi- 

 bus confertis; axillLs lanatis, areoli- nudis, aou- 

 leis exteriorihus permultis intertextL albidis, 

 centralibus 8-12, exteriores superantibus rla- 

 veseemibus,summo Ktibcurvato albo subpurpu- 

 rascente " Nuevo Leon 



MAMMILLARIA RADIANS P DC. 

 MAMMILLARIA RADIOSA E. 



M. a'versoni, arizomca, chlo antha, deserti. 

 MAMMILLARIA RECURVATA E. 

 MAMMILLARIA STROBILIFORMIS Shr. 



MAMMILLAPIA SULCOLANATA Lem. 

 MAMMILLIRIA VIViPARA Haw. 

 Puip.e and white sp.n s cover the en- 



tire plant; flowers bright purple, 3.5 cm 

 long and broader when 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 ANDULI^ERAE. Cylindr c- 

 ai; mammae cylindrical ,)cng, or oval and 

 more or less globose; grooves bearing 

 more or less conspicuous glands, the 

 grooves cften absent in young p. an s, the 

 gauds sometimes n the axils or at the 

 base of the tubercles. 



MAMMILLARIA ASTERIAS Cels. 

 MAMMILLARIA BREVIMAMMA Zucc. 



Near Zimipan. M xico. 

 MAMMILIARIA CLAVA Pf. 



"Clavato-columnaris, intense viridis; axi'lis 

 tomentodenso alboetglandulasimplice ml ell a 

 instructis, mox planissimis, nudis; ra&mmillis 

 elongatis erectis, dorso sulcatis, hasi oblique 

 tetragon! a; areolis albo-villosis infraapicalibus; 

 aeuleisri ctis, oorneis, subaequalibus, radiatiti- 

 bus 7, centraiil, paulolongiore, crassiore." -Pfr 

 AGZ 1840,282. Mexico— Eh.renb ■ g. 



Bot mag 1 4358 Otto & Dietr AGZ 1845, 234-5. 



M doliehocentra Lem. 

 MAMMILLARIA DOLICHOCENTRA Lm 



Two distinct species have been figured un- 

 der this name by Foerster, Schumann, & Lem 



Seeciava. 



MAMMILLARIA ERECTA Lem. 

 MAMMILLARIA GLANDULIGERA 



Otto ex Dietr AOZ 1848, 298:— "obovata, sub- 

 glaucesr-ens axillis nudis; mamiUis brevibns, 

 pyramidatis, subteretibns, albido-puuoia i ;, 

 dorso glandular roseo albo instructis; aeolis 

 subnudis; aculeis exteri >aibus steliatim disnos- 

 itis numerosis fiavesceutibus demum albi , 

 centralibus ternisvel quaternis subulatis fus- 

 cis, unico patente, r.seteris erectis. iViexico." 



Ts OttonisfideKft. 

 MAMMILLARIA MACROTHELE Mart. 



Near Zimipan, Mexico. 

 MAMMILLARIA OTTONIS Pf. 



"Globosa simplex obscure griseo-viiens; ax- 

 illis fasciculo lanas albidse et gland ula rubra to- 

 mentoalbo cincta instructis; mammillis crassis 

 mammasformibus, basi interdum <-ouflueuti- 

 bus, dorso Usque ad glandulam sulcatis; areolis 

 iunioribus albo-villosis; aculeis radiantibus 11- 

 12 subaequalibus rigidis rectis, 2 sommis gr \c : li- 

 oribus subeiecti , flavesccnt., api^e fuse-., tan- 

 dem fu^co.cinereis, centralibus 3 rarius 4, (sum- 

 mo pleruraque defh'iente) subdeevissatis, rigidi- 

 oiibus, comeis, infimo lonedssimo natente re- 

 curvulo. 1 '— Pfr AGZ 1838,274. Mineral del Mon 

 te, Vexico— Ehren:>erg. 



MAMMILLARIA SALMDYCKIANA 



Scheer ex Salm HD ed 2, 134 [1850]. 



M Pcheerii Muehpf AGZ 1947, 97, non 1845. 



M rob us i pina schoit ex E. 



M [Cactus] brownu Toumev bot ?az "2-.-253. 



Se« Orcutt rev 77-78 for descriptions; it is t mn 

 the uaiue sch.erii ere dropped foi il:is rare 



