August, 1902. 



CACTACEAE, 



Many people who have been acquaint- 

 ed only with the prickly pear and the 

 cholla cactus of the plains — perhaps 

 to the detriment of their epidermis, will 

 be surprised to learn that over one 

 thousand valid species exist, to which 

 more than three thousand names have 

 been applied by botanists and horti- 

 culturists. 



The following is a nearly complete 

 list of known species, and a few syno- 

 nyms are also given. Descriptions of all 

 will be published eventually we hope, 

 but this contains much never published, 

 at least in English, and in this form will 

 be useful to many. 



Tribe ECHINOCACTEAE. 



Calyx tube produced beyond the ovary; 

 stem coveredi with elongated tubercles or 

 ril s, rarely leafy (except when >oing). 



Karl Schumann, in his monogiaph, rec- 



ognizes 21 genera, including Cereus, Pilo- 

 cereus, Cephalocereus, Phyilocactus, Epi- 

 phyllum. Echinopsis, Echinocereus, Ech- 

 inocactus. Me ocactus, and Leuchtenber- 

 gia in this tribe, in the otder named, 

 making a separate tribe for Mammiiiaria, 

 Pelecyphora, and Ariocarpus. Filocereu.s. 

 Cephaloctrtus, Echinopsis, and Echino- 

 cereus are better kept as sections ot 

 Cereus; EpiphvUum as a section of Phyi- 

 locactus; Ariocarpus (Anhalonium) as a 

 section of Mammillar'a His other gen- 

 eia are divided into tribes, Rhipsalicicae. 

 of 3 genera— Pfeiff era, Hariota and Khip- 

 salis (best treated as one); Opuntieae. of 

 3 genera— Opuntia, Ncpalea and Pterocac- 



tus (the 2 latter of doubtful value); and 

 Peirpskieae, including Peireskia and Mai- 

 huenia. 



Genus ANHALONIUM Leinaire. 



A. AREOLOSUM Lem. 



A. ASELLIFORME Web. 



A. elongatum S, is prismaticum 



A. flssipedum Monv, is sulcatum. 



ANHALONIUM PISSURATUM E. 



Anhalonium Engelmanni Lemaire Cact 

 42 (1S6S). 



Living Rock, found in Texas and Mexico. 

 "Upper and exposed part of tubercle trian- 

 gular in outline, convex, carinate and almost 

 smooth below, convex and variousJy fissured 

 and thereby verrucosa above, sharp and cre- 

 nate on the edges."— Engelmann. 

 A. furfuraceum Wat. is prismaticum. 

 '^■„-!,V''^^'''"'anum Reb, is Echnocactus 



\\ iliiamsii. 



A. kotschoubeyanum Lem, is sulcatum 

 ,,..^.'?^'' '' Htnnings, is Echi..oca.tus 

 \\ uliamsii. 



A. PRISMATICUM Lem. 



S mple, tjp flatte ed er depressed, 

 more .arely hemisphaencal, center dense- 

 I.v tjn-.en.ose. 4-8 inches in diameter, 1-2 

 (larely 4) tiches above pround. the large 

 root 4-8 inches below the surface witn 

 tew co.rse ' broiis rots; tubercles tri- 

 ang lar, acute with a carti.aginous tip, 

 or obtuse, often ending in a minute de- 

 pr ssio ( r toment )se areola, spiieless, 

 the keel often with a strong shon der, ^-8 

 inches ong, often as wide, axils with 

 lona: dens^- wool, rpper snifne s^ooh 

 or often more or less roi'ghe^ed; ♦^'owe- s 

 white to rose. 1 inch long, sepals brown- 

 ish: friite clavate. -carlt-r > now ,ee 

 the Indians, or peyote (a name more 

 en mini res ricted to Echi omct •- 

 Wil iams i). The minute areolae are 

 .sometimes placed on the upper su face of 

 the tubercles near the end .or often ab- 

 sent. San Luis Potosi (Orcutt 2S07), 

 where runerOLS speMmcns ex i b t all 

 thp variations necessary to connect sev- 

 eral alleged species. The type of Wat- 

 son's Mammiiiaria fvrfuracea was ctI- 

 lected at Carneros Pass, Ccahuilla (Prin- 

 gle 25m. 



A. pulvi'lige' um Lem. is prismaticum. 

 A. retusum S. is prismaticum. 



ANHALONIUM RUNGEI Hildm. 



Sandy loam, in the foot of high moun- 

 tains, Coahuila (C. Runge). 

 A. SULCATUM S. 

 A. TRIGONI'M Web. 

 A. turbinofirme Web. 



A. williamsii P, is Echinocactus Willi- 

 amsii Lem. 



Genus APOROCACTUS Lemaire. 



A. Baumannii Lem, is Cereus Bauman- 

 nii Lem fide KS. 



A. co'ulrnus Lem, is Cereus Bau- 

 mannii fide KS. 



A. flageltiform - Lem, is Cereus flagelli- 

 formis Mill fide KS. 



