45 



Cacti.— Orcutt. 



46 



plant of Sonora. New Mexico, Chihuahua. Tex- 

 as and Arizona* the plants from Ban Luis I'oto- 

 si is a distinct species, 



MAMM1LLARIA SCHEERII Muchlpf. 



"Globosa multiplex: mammillis subglobbsis 

 superne' sulcatis; aculeis radiantibus 20-22 albis 

 adpressissubdistichis, centralibus 4 rectis fus- 

 cis. inflmu valde elongato8-10 lin. longo "-AGZ 

 1845. 346; 1846, 373, is polymorpha [oonoidea]. 



See salmdyckiana. 



Subgenus DOLICHOTHELE KS. 



MAMM1LDARIA LONGIMAMMA P S'C. 

 MAMMILLARIA SPHAERICA S. 



Subgenus LACTESCENTES. Plants de- 

 pressed-globose, rarely a little elongated; 

 juice milky; tubercles usually angular 

 and somewhat leathery. Flowers as in 

 Eumamiilaria, but mostly small. 

 MAMMILLARIA ANGULARIS L-O. 



MAMMILLARIA CAPUT-MEDUSAE 



Otto. 



Near Zimipan.i Mexico. 



M. DIACENTRa Jacobi AGZ 1856, 91. 



"Angulosae tet v agonae. Caule spha?roideo, sub- 

 umbilicato saturate viridi lactescente. M m- 

 illis ad basin rhomboideis, obtu.-e pyramidali- 

 bus apice late;aliter applanatis; pulvillis o'vali- 

 bus glabiissvbapicalibus; axil is jvmioribus nu 

 dis, dein lioccose aJbo-lanatis, serius cenuo nu 

 dis . * setibus radialibus 5-6, diaphane albidis 

 apice subsphacelatis, serius ubique albidis, 

 subulatis vix patulis, subtus et inferne recur - 

 vulis ractianter positis, 2 aut 3 superioribus bre- 

 vissimis,3 inf^rioribus altero tamo L>ngioribus; 

 aculeis centralibus 2, multo validioribus longio- 

 ribusque, junioibus cinereo-btunneis apire ni- 

 gris, dein carneo cinei'eis apice nigrieansibus, 

 superioreerect<~> sensim recurvato, inferiore 

 recte patenteinferne recurvulo, utroque earum 

 basin semi terete, apice rotundato, infen'ore 

 fere altero tantum lonsiore. Flores parvuli ru- 

 bicund]', tubo brevissimo, circa ovarium ventri- 

 c se rttlatato, superne coarctato, petalis lanceo- 

 latlsbreviter recurva'tig, roseis cum linea media 

 purpurea. Stamiuum filamenta rosea anthe- 

 ra?que sordide flavse: stylus staminibus lougior 

 roseus, stigmatibus 6 c ncoloribus. Floret 



mensibus Junto »i Julio Plantadeseripla alti- 

 tudine trii«>l]icari diametroque poll. 3^£. Aeu- 

 leorun radialini 2 aut 3 superi lin. 1, ceteri 3, 

 lin. 2 longi; acule >rum centrali urn superior lin. 

 6-8longuK. inferior poflicari set utra." 



MAMMILLARIA FORMOSA Scheidw. 

 M. FUNKfl ScheidW AGZ 1841,43 — 



"lactescens, robusta, umbilicata, laetevirid- 

 is; axillis nudis, tandem crinifcrii; crinibus al- 

 bis apice nigrescentibus ex mox unicoloribus; 

 mammillis pyramidato-tetraedris; areolis inf a 

 apice rjd mammillarum immereis, nudis, juniori- 

 bus vix tornentosis; aculeis 8 maxime inaequali- 

 bus, centrali 1 longissimo incurvnlo, nascenti- 

 bus fuscis, tandem griseis. Truncus 3 poll 10 

 ]in altus, diametro 6pollicari; aculei extenores 

 J4-1-2 ! in. longi, centralis %-6 1in. longus." 



Mexico. 

 MAMMILLARIA GABBII Engelm. 



Cactus gabbii Coulter, U S na Hb cont 

 3:10 f J: — 'Globose, 5-10 cm in diameter, sim- 



ple, tubercles cylindrical, Blender, L2-14 

 mm bug, wiih woolly axils; radial spines 

 aboul 13, 5-8 nun l< rig. Lower ones longer 

 and stouter, especially the latesl ones 

 pectinate; the central shorter, straight 

 and robust; flowers small, yellowisih-red; 

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

 Gard. Among rocks, from S;m Tgnficio 

 to Mission San Fernando, Lower Califor- 

 nia." 



Near San Quintin bay, Baja Cal. (Or- 

 cutt). 



Cactus brandegei Coulter, U S Na Hb 

 cont 3:76. 



1WAMMILLARIA GFMINATA Fche'dW. 

 — "Lactescens, trunco geminato; vertice umbil- 

 icato; axiliis lanHtis; mammillis tetragono-pol- 

 yaedris, viridibus; ateoljs junioribus lanatis, 

 dein nudis; aculeis exterioribus 6 rectis, stella- 

 tis, apice. nigrescentibus; centrali 1 validiore 

 curvula niorro Mammil ae 4 lin. longa?: aculei 

 exteriores 2}4 lin. long' centralis longitud'Tie 3 

 lin."-AGZ 184', 42. 5000 ft alt near Oax».ca, Mex. 



MAMMILLARIA GIGANTEA Hildm. 

 MAMMILLARIA GUMMIFERA E. 



MAMMILLARIA KEESEANA Mac Dow. 



MAMMILLARIA HEYDERI Muehlenpf. 



"Globosa, viridis, veitice impiesso, axillis 

 jurioribus 'abatis, mamillis conieis, elongatis, 

 6 lineas longis, 31ineas la'i^. areolis junioribus 

 albo-tomentosis apice mamillamm dispositis; 

 aculeis radiant ibus 20-22 albis se f aee's. inferiori 

 robustiori paululum el uigato, centrali 1, ereeto 

 cornco basi apiecque fusr'o 2%-3 lineas longo." — 

 MhlpfdtAGZ1848,20. Texas. 



Re^el Gartenflora 1880, 52, f. 



Scheele. Boem Texas, 435 (1849). 



M. KRAMERI Muehpft AGZ 1815, 347: 



"Globosa. basi tandem prolifera: axillis lana- 

 tis; mammillis angulosis pyramidalis, juniori- 

 bus lanatis; aculeis exterioribus 4-5 rigidis, 

 centrali 1 elongato l%-2 poll, longo, omnibus al- 

 bis apice nigris Die pflanze istaus Mexico, und 

 erbielt ich dieselbe vom Kramer in Hamburg, 

 unter den Namen M. macrantha." 



Runge sent under this name from San Luis 

 Potofi, whit h bore flowers %inch long, % inch 

 across, 12 maroon purple sepals, 16 white petals 

 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 caespitosa, cylin- 

 drica, vertice umbilicato; mammillis pyramid- 

 atis quadrangularibus; axillis primo nudis, 

 tandem lana abundanti; aculeis criniformibus, 

 albis munitis; areolis rotundis lana albainstruc- 

 tis; aculeis exterioribus 6, centrali 1, omnibus 

 rigibis subaequalibus fuscis, tandem carneis api- 

 ce spbacelatis. Fructus pyriformis; flores ad- 

 hucignoti." Mexico. 

 Jacobi AGZ 1851, 11. 

 Fee maschalacantha. 



