47 



Cacti.— Orcutt, 



48 



M. MAHCHALACANTHA Cels. 



M. mutabilis IsBvior Salm, HD ed 2, 120. 



Cactus mutabilis OK 



M. ieucotricha (leucocarpa) Scheidw. 

 Variety LEUCOTHICHA Monv. 



M. Djutabilis et funkii Schdw. 



M. Senkei Foerst. 

 Variety XANTHOTKICHA Monv. 



N. xanthotricha Schdp. Cactus xanthotri- 

 chus OK. M mutabilis xanthotricha S. 

 M PALLESCKNS Scheidw AGZ 1841, 42. 



"Lactescens, cylindiica aut ovata; vertice um- 

 bilicato subacu eis abscondito; axillls maxime 

 lanatis, lana aculeis adhiurente ct mammillis 

 luvolvente; areolis tomentosis, tandem nudis; 

 mammillis polyaedris, laete viridibus, mox 

 pallescentibus; aculeis 4 cruciatim dispositis, 

 angulatis, recurvis, supremo maximo subtorto, 

 omnibus rigidis, carneis." 5500 ft alt Tehuiican. 

 MAMMII.LARIA MEIACANTHA E. 

 MAMMILLARIA SEMPERVIVI P DC. 



Near Zimjpan, Mexico. 

 MAMMII.LARIA TROHARTII Hilldm. 

 MAMMILLARIA UNCINATA Zucc. 



Schumann in iudes the following in this 

 group, but as known to us all are not milky. 

 M. CELSIANA Lem. 

 M. PRAELII Muehlenpf. 

 M. PYKRHOCKFHALA Scheidw. 

 M. ZEYERIANA P Haage jr 

 M. CENTRICIRRHA Lemaire. 

 M. CROCIUIATA Lemaire 

 M. KARWINSKIANA Mart. 

 MAMMILLARIA BICOLOR Lehm. 



Near Zimipan,, Mexico. 

 Variety NIVEA KS. 

 MAMMILLARIA CARNEA Zucc. 



Near Zim.pan,, Mexico. 

 MAMMILLARIA ELEGANS DC. 

 MAMMILLARIA LAVOVIRENS S. 

 MAMMILLARIA HAAGEANA Pf. 

 MAMMILLARIA MELALEUCA Karw. 

 MAMMILLARIA MELANOCENTRA 



Pos. 

 MAMMILLARIA MUTABILIS Scheidw. 

 MAMMILLARIA NIVOSA Link. 

 MAMMILLARIA OBSCURA Hilldm. 

 MAMMILLARIA PARKINSONII Eh. 

 MAMMILLARIA PERBELLA Hilldm. 

 MAMMILLARIA PHYMATOTHELE 



Berg. 

 MAMMILLARIA POLYEDRA Mart. 

 MAMMILLARIA SEITZIANA Mart. 



Near Zimipan. Mexico. 

 MAMMILLARIA SIMPLEX Haw. 



Subgenus EUMAMILLARIA. Plants 

 globose or elongated, with watery juice, 

 and cylfndrical or conical grooveless tu- 

 bercles. P^lowers borne usually in a ring 

 near the top of the plant, cup-shaped or 



expanded, as broad or broader than long. 

 Sepals appressed. Stamens and styles 

 shorter than the corolla. 

 MAMMILI^ARIA ACICULARIB Lem, 

 MAMMILLARIA ACTINOPLEA Eh. 

 MAMMlLLuARIA ALPINA Mart. 

 MAMMILLARIA AMABILIS Eh. 

 MAMMILLARIA AMBIGUA G. Don. 

 MAMMILLARIA AMOENA Hopff. 

 MAMMILLARIA ANCISTRATA Schelh. 

 MAMMILLARIA ANCISTRIA Walp. 

 MAMMILLARIA ANDREAE Pf. 

 MAMMILLARIA ARGENTEA Fenn. 

 MAMMILLARIA ARICTINA Lem. 

 MAMMILLARIA ARMILLATA K Br. 



"Stems somewhat attenuate, reaching 

 3 dm in hieght, 4-5 cm, in diameter, usu- 

 ally in clusters of 3-12, from the base, of- 

 ten branching above; tubercles some- 

 what leathery in texture; conical, some- 

 what aigled; axils setose and sparsely 

 woolly; radial spines 9-15, 7-12 mm long, 

 the inner half whitish or grayish; cen- 

 trals 1-4, 10-20 mm lorg, the lower one 

 hooked and longer, all, and the outer 

 part of the radials dark brown, yellow- 

 ish or gray; flowers 1-2 cm long, scarcely 

 spreadirg, flesh color; fruit red, clavate, 

 11/^-3 cm long; seeds coriaceous, dull 

 black, about 1 mm long, oblipuely obo- 

 vate, ccnstricted above the more slender 

 basal portion; surface covered with mi- 

 nute, net closely contiguous pits, the in- 

 tervening spaces minutely wrinkled; hi- 

 lum basal, narrow. San Jose del Cabo, 

 Baja California. The name is in allu- 

 sion to the dark bands which encircle the 

 plant, giving it much the appearance of 

 a raccoon's tail."— Katharine Brandegee, 

 Zoe, 5:7 (Je 1900). 



MAMMILLARIA ATRORUBRA Eh. 

 MAMMILLARIA ATROSANGUINEA 



Eh. 



MAMMILLARIA AULACANTHA P DC. 

 MAMMILLARIA BADISPINA F. 

 MAMMILLARIA BARBATA Engelm. 

 MAMMILLARIA BARLOWII R-K. 

 MAMMILLARIA BELLATULA F. 

 MAMMILLARIA BERGENII Eh. 

 MAMMILLARIA BERGII Mig. 

 MAMMILLARIA BIPURCA Dietr. 

 MAMMILLARIA BINOPS Hge. 

 MAMMILLARIA BOCASANA Pos. 



This beautiful plant is covered with the fines 

 tender hair lik*> spines. 



Near San Luis Potosl, Mexico. 

 MAMMILLARIA CANDIDA Scheidw. 

 MAMMILLARIA CARRETII Rebut. 



Is Priiiglei. 

 MAMMILLARIA CONICA Haw. 

 MAMMILLARIA DECIPIENS Schw. 



L >ose tubercled small growing species with 

 delicate & pretty yellow lis. 



MAMMILLARIA DIOICA K. Brandg. 



M. Goodridgii Engelmann (not Scheer?). 

 small globular species, closely set with brown- 

 ish or white spines, the central one curved 



