»3 



Cacti. — Orcutt. 



2J 



tuse, Intervals very shallcw, the number 

 of ribs increasing with age by bifurca- 

 tion and new ones appea ing above the 

 forks. Areolae one-quarter inch apart, 

 small, young plants bea in? 30 or mo-re 

 slender flexuous white sp iies 't-9 inch s 

 long; spines at length deciduous' or near- 

 ly so, the ribs often with a continuous 

 woody ridge enclosring the a eolae. Our 

 Illustration well shows the b.-auty of a 

 young plcint, but in no way depicts the 

 mature grtwth; er c , ih top sli^hJy 

 bent, and Oinument d w th a mass of 

 whitish wcol which ctntiu. es en one side 

 a third of the way do. n- the lower poi- 

 tlon ye'low fr m age. Stats of Oaxaca 

 prd Puebla. Mexi' o (Orcutt 2705). 



CBREUS HOPPBNSTBDTI. 



PILOCBRUS LANUGINOSUS Rumpl. 

 Pllocereus lateribarbatus Rumpl, Is 



Cephalocereiis columna-trajani fide KS. 

 Pllocereus militarls Hort, is chrysomal- 



lus. 

 PILOCBREUS MORITZIANUS L-C. 

 CEREUS PALMERI Engelm. 



"Stems branching, 3 or 4 angled, 12-15 

 dm high; spines in greenish-brown bunch- 

 es; fruit greenish-yellow, its areolae bear- 

 ing 5-8 stout spines. Type, Palmer 70 of 

 1869 in hb Mo bot gard. Sonora."— Coul- 

 ter, Cont Na hb 3:i01. 

 PIL.OCBRBUS PENTAEDROPHORUS 



Cons. 

 PILOCEREUS POLYGONUS KS. 

 PILOCERBUS POLYLrOPHUS S. 

 PILOCEREUS ROYENII Rumpl. 

 PILOCEREUS RUSSELLIANUS Rumpl 

 CEREUS SARGENTIANUS Orcutt. 

 PILOCEREUS SARGENTIANUS Orcutt 

 PILOCEREUS SCHLUMBERGERI 



Web. 

 PILOCEREUS RCHOTTII Lem. 

 CEREUS SCHOTTII Engelm. 



Stems 8-10 from the same base, 4-10 feet 

 hish., 4-5 Inches in diameter, ribs 4-7, areo- 



PILOCEREUS HOULBTTII Lem. 



ine distant; spines on sterile part short, 

 tout, 4-6 radials and 1 central; the spnes 

 on fertile part 1-4 inchesi long, pendulous, 

 orming a reddish-gray beard, in which 

 he flowers and small fruit are nearly 

 hidden. Seeds large, with hooked cotyl- 

 edons. Sonora, 

 Variety AUSTRALIS K. Brandegee. 



"Stems more slender and upright than 

 the northern forms; ribs in the fertile 

 ends, often as many as 10; areolae small- 

 er, and mart distant, and the long sp'nes 

 ccmmonly fewer and stouter; abortive 

 spine or gland (?) below the acute base 

 or areolae more conspicuous."— Kathar- 

 ine Brandegee, Zoe, 5:4. 



Near Guaymas. Sono'ra (Orcntt). 

 T'lLOCEREUS SCO PAR If S Pos. 

 P T OCEREITS SENILIS Ltm. 

 CEREUS SEND IS Salm. 



Is Cephalocereus senilis Pf. 

 T'TLOCT^FT'^TTS STRTCTUS T?umpl. 

 PILOCEREUS TETETZO Web. 

 PrLOCEREUS URBANIANTJS KS. 

 Pllocereus VeU'^zoi Lem, Is Cephalocere- 



I's melocactus fde TCS. 

 PIT^OCERBUS VERHBINEI Rumpl. 

 CEREUS WBBERl Cotilter. 



'Plant about 10 m high, with a regular 

 candelabra form of branching (2 main 

 branches ea-^h producing rear the base 2 

 other branches, all ascending), branches 

 and main stem of same d'ame'er, angled 

 and glaucous; areolae 3-5 rva apart; spines 

 stout, bulbous at base; radials 10 or 11, 2-5 

 cm long; central solitary, 6-10 cm 

 lo"f. lateral'lv coninresped. som-etlmes 

 a little d«flexed; f owers lateral, white, i-1) 



