r^ 



ACANTHOCKRI5US. 



123 



-h 



comes from near the type locality of Cactus pitajaya Jacq 

 pentagonus, also found in northern Colombia 



much 



Acanthocereus 



12: 432. 1909. 



Cactus 



Cactus 



Cereus 



Cactus 



Cereus 



Cereus 



? Cereus 



? Cactus 



Cereus 



V Cereus 



\CereMs 



Cereus 



Cereus 



Cereus 



Cereus 



Cereus 



Cereus 



Cereus 



1835 



pentagonus Linnaeus, Sp. PI. 467. i753- 



pitajaya Jacquin, Enum. PI. Carib. 23. 1761. 



pentagonus Haworth, Syn. PL Succ. 180. 181 2. 



prismaticus Willdenow, Enum. Pi. Suppl. 32. 1813. 



prismaticus Haworth, Suppl. PI. Succ. 77. 1819. 



pitajaya De Candolle, Prodr. 3: 466. 1828. 



undulosus De Candolle, Prodr. 3: 467. 1828. 



undulosus Kosteletzky, Allg. Med. Pharm. Fl. 4: i393- 



cognatus Pfeiffer, Enum. Cact. 106. 1837, as synonym. 



acutangulus Otto in Pfeiffer, Enum. Cact. 107. 1837. 



princeps Pfeiffer, Enum. Cact. 108. 1837. . JL 



ramosus Karwinsky in Pfeiffer, Enum. Cact. 108. 1837. 



baxaniensis Karwinsky in Pfeiffer, Enum. Cact. 109. 1837. 



variabilis Engelmann, Bost. Journ. Nat. Hist. 5: 205. 1845. Not Pfeiffer, 1837 



nitidus Salm-Dyck, Cact. Hort. Dyck. 1849. 211. 1850. 



vasmeri Young, Fl. Texas 276. 1873. 



dussii Schumann, Gesamtb. Kakteen 89. 1897. . 



sirul Weber in Gosselin, Bull. Mus. Hist. Nat. Pans 10: 384. 



rf^^^T^ 



r^J^ 



1904 



Stem clambering, usually 2 to 3, sometimes 7 meters high, ^ut when gro^ymg in tlie open 

 more or less arched and rooting at the tips, then making other arches and thus formmg ^^^^^ colc^^^^^^^^^^ 

 old trunk becoming nearly round, 5 cm. in diameter or more, covered with %thick mi^cilaginous 

 spineless cortex and a hard-wood axis with only a small pithy ca^nty ; joints 3 to 8 cm broad 3 to 

 5 angled, low-crenate; juvenile growth nearly terete, with 6 to 8 low "^s.approx mate areole and 

 numerous short acicular spines; areoles on normal branches 3 ^^ 5 cm. apart; spines gray acicular to 

 subulate, various; radials at first 6 or 7. i to 4 cm. long; central spine ^^ten so tary longer than 

 the radials; spines of old areoles often as many as 12, of which ^^^'^ff/'-^^^^^lfi'/ 

 cm. long; tube and ovary bearing conspicuous areoles with brown felt ^^^^ sey^^^^ sub^^^^^^^^ spmes, 

 outer pirianth-segments green ; inner perianth-segments white, acuminate, fruit oblong, red, edible, 

 cotvledons broadly ovate, 5 to 8 mm. long, thick, united at base, 

 gradually passing "below into the. spindle-shaped hypocotyl. 



Type locality: America 



Distribution :' Keys of southern Florida; coast of 



Mexico 



Gua- 



FiG. 182.— Acanthocereus i^»tag»«». 



temala and Panama; t 

 on St. Thomas and St 



Fig. 183.— Acantlioccrciis pent.igonus. 



nd Ouadeloupe. Introduced 



Recorded from Cuba. 



^ 



l^ 



