33 



Cacti.— Orcutt. 



24 



tuse, intervals very shallow, the number 

 of ribs increasing with age by bifurca- 

 tion and new ones appearing above the 

 forks. Areolae one-quarter inch apart, 

 small, young plants bearing 30 or more 

 slender flexuous white spines *4-9 inch s 

 long; spines at length deciduous or near- 

 ly so, the ribs often with a continuous 

 woody ridge enclosing the areolae. O r 

 illustration well shows the beauty o K a 

 young plant, but in no way depicts the 

 mature growth; erect, the top sligh ly 

 bent, and ornamentd w th a mass ol 

 whitish wool which continues en me side. 

 a third of the way down— the lower • o - 

 tion ye low fr m age. S'at s of O x ,ca 

 and Jruebla, Mexi o (Orcutt 2<u5\ 



CEREUS HOPPENSTEDTI. 



PILOCERUS LANUOIN03US Rum pi. 

 Pilocereus lateribarbatus Rumi, is 



Cephalocereus columna-tra'ani flde KS. 

 Pile cere us militaiis Port, is chrysomal- 



lus. 

 PILOCEREUS MORITZIANUS L-C. 

 CEREUS PALMER 1 Engelm. 



"Stems branching, 3 or 4 angl d, 1°-15 

 dm high; spines in greenish-brown bunch- 

 es; fruit greenis^-ye low, its areolae bear- 

 ing 5-8 stout spines. Tyre, Pamer 70 of 

 1869 in hb Mo bot gar:!. Sonora "—Coul- 

 ter, Cont Na hb 3: '01. 

 PILOCEREUS PENTAEDROPHORUS 



Cons. 

 PILOCEREUS POLYGONUS KS. 

 PILOCEREUS POLYLOPHUS S. 

 PIT OCEREUS ROYENII Pumpl. 

 PILOCEREUS RUSSELLIANUS Rumpl 

 CEREUS SARGENT! ANUS Orcutt. 

 PILOCEREUS SARGENTIANTTS Orcutt 

 PILOCEREUS SCHLUMBERGERI 



Web 

 PIT o,OFiREUS SCHOTTII Lem. 

 CEREUS SCHOTTII Engelm. 



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

 high, 4-5 inches in diameter, ribs 4-7, areo- 



PILOCEREUS HOULETTII Lem. 



lse distant; spines on sterile part short, 



tout, 4-6 radial S' and 1 central; the sp nes 



on fertile part 1-4 inchesi long, pendulous, 



o'm'ng' a redd 5 h-arr-^y be^cl. in which 



h f O' ers a d small fruit are nearly 



hidden. Seeds large, with hojked cct/1- 



eco s. Sonora. 



Variety AUSTRALIS K. Brandegee. 



"Stems more slender and upright than 

 the n rth rn ferms; rus in the fertile 

 ends, often as many as 10; areolae small- 

 er, and mort distant, and the long sp nes 

 ccmmorly fewer a^d st uter; abortive 

 ppi.e or gland (?) relow the acute tase 

 o areo'ae more conspicuous." — Kathar- 

 ine Brand gee, Zoe, '5:4. 



Near Guaymas, Sono'ra, (Orcutt). 

 FILOCEREUS SCOPABI' 'S Pos. 

 P OCEREUS SENILIS Lem. 

 CEREUS SENILIS Salm. 



Is Cephalocereus senilis Pf. 

 ^TLOC^REUS STRICTTTS Pumpl. 

 PILOCEREUS TETEITZO Web. 

 PILOCEREUS URBANIANUS KS. 

 Pilocereus VelPzol Lem, is Cephalocere- 

 us melocactus fde KS. 

 PII OCEREUS VERHEINEI Rumpl. 

 CEREUS WEBER1 Coulter. 



"Plant about 10 m high, with a regular 

 r>ande"abra form of branching (2 main 

 branrh°s ea.^h producing rear the base 2 

 other branches, all ascend'ng), branches 

 and main p^em of same d:'ame + er, angled 

 and glaucous; areolae 3-5 cm apart; spines 

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

 cm long; r-entral solitary, 6-10 cm 

 lor<g- laterallv comnres^ed, somptimes 

 a little deflexed; Powers lateral, white, £-13 



