Cacti.— Orcutt. 



GennH ARIOCARPUS Sclieltlw. 



Kaul Schumann revives this name in 

 his publications, but we prefer to retain 

 the na-re Anhalon um, wh ch has been 

 in universal use. among botanists and 

 horticulturists alike, for more than fifty 

 years. 



A. aselliformis Web, is Anhalonlum asel- 



1 forme 

 A. fissuratus KS, is Anhalonium fissur- 



atum. 

 A Krtschubeyarus KS. is Anhalonium 



sulcatum. 

 A. retusus Scheidw, is Anhalonium pris- 



maticum I, em. 

 A. sulcatus KS, is Anhalonium sulcatum. 

 A. tr'gonus KS, is Anthalonium trigonum 

 A. WiMamsii Voss, is TEchinocactus Wil- 



liamsii. 



GeniiH ASTROPHYTUM Leinalre. 



A. asterias I^em Cact 50, based on Echin- 



ocactus asterias. 

 A. caprlcorne Hort, based on Echinocac- 



tus capricornis. 



ASTROPHYTUM MYRIOSTIGMA Lem. 



The Bishop's Hood; an odd and beauti- 

 ful spineless plant from Mexico, resem- 

 bling a piece of carved stone. 



A. prismaticum Lem. Cact 50, error for 

 myriostigma. 



CACTUS AL.TERNATUS Coulter. 



"SubgLobose, 10 cm. In diameter, simple: 

 tubercles long (15-20 mm) and spreading, 

 with woolly axils: radial spines 3, rigid 

 andl recurved, 5 mm long; central spines 

 3, very stout and much recurved, 20-30 mm 

 long, alternating with the radials; all 

 ashy colored and often twisted: flower 

 and fruit unknown: Type, in Herb. Coul- 

 ter. San Luis Potosi (E'schauzier of 

 1891)."— Coulter Cont U S Nat Hb 3:95 

 CACTUS BRUNNBUS Coulter. 



"Obovate-cylindrical, 3 by 6 cm, simple, 

 tubercles ovate, grooved to the base, 5-b 

 mm long, with woolly axils: radial spines 

 11-15, spreading, rather rigid and brown- 



ish (lighter with age), 8-10 mm long; cen- 

 tral spine much larger, 20 mm long, 

 hooked: flower and truit unknown. Type 

 in Heirb. Coulter. San Luis Potosi (HJs- 

 chauzier of 1891). "—Coulter Cont U S Nat 

 Hb 3:117. 



CACTUS DENSISPINUS Coulter. 



"Globose, 7.5 cm in diameter, simple: 

 tubercles short,, with woolly axiis: radia. 

 spines about 25, erect-spreading, slendei 

 but rigid, yellow (brownish to black with 

 age), unequal, 8-ltj mm long; centra 

 spines 6, a little ionger (10-12 mm) and 

 straight, more rigid and darker, black 

 tipped: seeds obovate, reddish-brown, ^ 

 mm long. Type in Herb. Coulter. Sar. 

 Luis Potosi (Eschauzier of 1891). Ver> 

 easily distinguished by its dense, erecv. 

 spines, which so completely cover tht 

 plant as to give It the appearance of a 

 large chestnut burr."— Coulter Cont U fc. 

 Nat Hb 3:96-97. 



Mammillaria castanoldes, M. Wegnen, 

 M. densispina. and M. fuscata, are prob 

 ably ail identical with this species. 

 CACTUS ESCHAUZIERI Coulter. 



"Depressed-globose, 3 cm in diameter, 

 simple: tubercles broader at base. 6-8 mm 

 long, with naked axi s: spines all pubes- 

 cent; radials 15-20, with dusky tips, thb 

 lateral 10-12 mm long, the lower weakei 

 shorter and curved, the upper shorter^ 

 solitary central spine reddish, slendei, 

 somewhat twisted, usually hooked up 

 wards, 15-20 mm long: flowers red (?): 

 fruit reddish (?), ovate, about 10 mnr 

 long: seeds reddish, oblique-obovate, 1.2 

 mm long, pitted, with subventral hilum. 

 Type in Herb. Coulter. San Luis Potos. 

 (Eschauzier of 1891)."- Coulter Cont U fc 

 Nat Hb 3:104. 



CACTUS MACULATUS Coulter, 

 cm,, simple: t 



"Obovate-cylindrical, 6 by 8 cm, some- 

 what cespitose: tuberc'es ovate, terete, 10 

 mm long, grooved to the base, with na- 

 ked axils: radial spines 10 or 11. straight 

 and spreading, rigid, blackish (becoming 

 ashy with age), black-tipped, 12 mm long: 

 central spine large, more or less spotted, 

 erect, 25-35 mm long: flower 13 mm long, 

 pinkish: fruit unknown. Type in Herb. 

 Coulter, San Luis Potosi (Eschauzier of 

 1891)."— Coulter Cont U S Nat Hb 3:117. 

 CACTUS PRINGLEI Coulter. 



"Globose (?). 5 cm in diameter: tuber 

 cles short-conical, about 6 mm long, with 

 very woolly axils: radial spines 18-20, se 

 taceous-brlstly and radiant, 5-8 mm long, 

 central spines, 5-7 (usually 6), stout ana 

 horny, more or less recurved, spreading 

 20-25 mm long; all straw-colored, but the 

 centrals darker: flowers deep red (dark 

 er, even brownish outside), 8-10 mm long: 

 fruit unknown. Type, Prlngle of 1891 i.i 

 Herb. Gray."— Coulter, Oont U S Nat Hb 

 3:109. 



Genus OBPHALOCERUS Pfeiffer. 



C. CHRYSOMALLUS KS. 



Erect, branching like a candelabra, 10-15 

 feet high ,stems 3-6 inches in diameter; 



