320 



Qacti at Hendon Vicarase. 



Tribe PHYLLARIOCOTYLEDO^NEiE. 



Genus I. CE REUS. 



Form columnar, erect or creeping. Surface angled or furrowed, armed with 

 spines. Flowers long and tube-like, produced in the fascicles of spines on 

 the sides of the plant. Berry naked. 



Sect. I. Columns erect; 

 Subsect. 1. Column robust. 



1 Jamacdru. 2\ ft. high, and 4 in. in 



diameter. — Syn. C. glaiicus. 



2 lae'tus. 3 ft. high, and 4 in. in di- 



ameter. — Syn. C. formosus; 

 C7actus lae'ta. 



3 sp. (black spines), 4 ft. high, and 



3 in. in diameter. 



4 peruvianus. 2 ft. high, and ?>\ in. 



diameter. — Syn. C. hexagonus; 

 Cactus peruviana ; C. penta- 

 gona ; C. hexagona j C. hepta- 

 gona. 



2 monstrosus. 3^ ft. high, and 

 lift, in diameter, branched. — 

 Syn. Cactus monstrosa ; C. ab- 

 normis. 



6 sp. (brown spines). 2 ft. high, 



and 2f in. in diameter. 



7 geometricans. 2 ft. high, and 3 in. 



diam. — Syn. C. aquicaulensis. 



3 p. 



rather thick. Angles large. 



8 pruinosus. Tin. high, and 4 in. in 



diameter. — Syn. C. roridus ; 

 Echinocactus pruinosa. 



9 marginatus. 1^ ft. high, and 3^ in. 



in diameter, — Syn. C. incrus- 

 tatus ; C. cupulatus ; C. Mir- 

 bel«". 



10 robustus. 3i ft. high, and 4| in. 



in diameter. 



Subsect. 2. Columns slight. 



11 ForbesM. 9 in, high, and 2 in, 



in diameter. 



12 sp. 4| ft. high, and 2h in. in di- 



ameter. 



13 tetragonus, 2^ ft. high, and 2 in. 



in diameter, branched 1 ft. — 

 Syn. C. quadrangularisj Cactus 

 tetragona ; C. pentagona. 



14 virens (white spines and greenish). 



2 ft. high, and 2 in. in diameter 



Sect. II. Columns tall, erect, and slender. Angles small, 6 — 9. 



15 nigricans. 2 ft. high, and 1^ in. 



in diameter. 



16 azureus. 2§ ft. high, and If in, 



in diameter, 



17 caerulescens. 2 ft, high, and 



If in, in diameter. — Syn. C. 

 iE'thiops, C. Mendory. 



18 repandus. 4| ft. high, and 2 in, 



in diameter, 



19 hystrix, IJ ft, high, 2^ in, diam. 



20 crenulatus, 1 ft. high, and l^in. 



diameter. — Syn. Cactus Roy- 

 en/, 



21 sp. (glaucous skin). 2 ft. high, 



and 2i in. in diameter. 



22 sp. If ft. high, and 3§ in. in di- 



ameter. 



23 sp, (spines whitish green). 1 ft. 



high, and 24 in. in diameter. 



Sect. III. Columns erect, short, and stout, 

 24 multangularis. 2 ft. high, and 



3i in. in diameter. — Syn. 

 Cactus multangularis. 



25 m. 2 nobilis. 1 ft. high, and 3^ in, 



in diameter, 



26 m, 3 spin, fuscis, 9 in, high, and 



2^ in. in diameter, 



27 m, 4 spin, albis. 9 in. high, and 



24 in. in diameter. 



28 chiloensis. 2 ft, high, and 44 in. 



in diameter, — Syn. C. coquim- 

 banus ; C, Quintero ; Echino- 

 cactus pyramidalis ; E.elegans. 



Angles many, 7 — 22. 



29 Dyckii. 9 in, high, and 4 in, in 

 diameter, 



30 sp. n. (gibbous angles, and mealy 



skin), 



31 sp, nov. (spines acute ; angles 



green), 1 ft, high, and 4 in. in 

 diameter. 



32 sp. nov. (spines black and white). 



33 candicans. 14 ft, high, and 7 in, 



diam, — Syn. C. Montezumt^ ; 

 Echinocactus candicans. 



34 arachnoides. 7 in. high, 44 in. 



in diameter. 



