334 cactkal:. 



CEREUS. 



88. C. AMBIGUUS DC. Prodr. III. p. 407. — PfeilT. I. c. 104. — Ercclus longus obtusis- 

 sime D-ll-anRularis: sclis spincscenlib. lana lonpiorib.; lubo Iloraii basi selifero. 



— Ctict. uiiihiijuun Bonpl. >av. I. 30. - Uclib. I'l. cxot. 179. — Crcstit ? 



89. C. POLYGONUS DC. Prodr. III. p. 400. — PfeiCT. I. c. 105.— Erecliis subarticu- 

 lalus sub - 11 -angularis, tanilcm ramosus: coslis compressis verlicalib.; sinubus 

 repandis; arcolis magnis approximatis; aculeis 10-10 gracilib. rcctis radiantib. 

 griseis. — Cacl. polygonus Lam. Dict. I. p. 539. — Plum. cd. liurm. p. 1H9. t. 190. 



— Species ex Lam. Cerco rcpando aflinis, ex Sprengcl cum C. griteo coujun- 

 genda. — Crescil in insula St. Dominici. 



* * Pilahaijae. 



Caulc ereclo 3-5-anguIari; arliculis clongatis obluse costalis. 



90. C. OBTUSUS Ilaw. Rcvis. p. 70. — Pfciff. I. c. 105. t — Ereclus laetevirens 3-an- 

 gularis: costis obtusis; fasciculis aculeorum valde remotis; aculeis fulvis c tomento 

 brunneo, 4 radiantib., centrali 1 elongato erccto. — Crcscil in Urasilia. 



91. C. VAIU.ABILIS Pfeiff. I. c. 105. — Suberectus subarticulalus simjilcx, vel basi 

 ramosus, viridis vel glaucescens: costis 3-5 subcompressis obtusis obrcpandis; 

 areolis plus minusvc remotis, albo-vel-fusco-tomentosis, parum lanatis; aculeis 

 reclis rigidis, cxteriorib. 0-8, ccntralib. 1-2, albis, llavidis vel nigricantibus. — 

 Cact. Pilajaya Jacq. Sclect. slirp. Amer. p. 151. — Cer. Pitajaya DC. Prodr. III. 

 p 4g(}. _ piuiD. ed. Burm. l. 199. f. 1. — Cer. nndulosus DC. Revuc p. 40. — 

 Prodr. III. p. 467. — Plum. cd. Burm. t. 194. — Cer. laetevirens S. Dyck, Ilort. 

 Dyck. p. 330. — Jamacaru Pison. Hist. nal. Brasil. p. 100. f. 1? — Cer. quadran- 

 gularis, trigonus, prismatiformis, hexangularis, cognatus, affinis, glaucus, spe- 

 ciosus Hort. — Crescit in Mexico, Peruvia, Brasilia, India occidenlali. 



92. C. VALIDUS Haw. Philos. Magaz. Dec. 1831. Vol. X. p. 414. — Pfeiff. 1. c. 100. — 

 Tclragonus firmus: apice glauco; laterib. fere planis vcl primo convcxiusculis; 

 ipsis angulis obtusissimis, mediocritcr spinosis. — In America calidiori. 



93. C. LAETUS S. Dyck, Uort. Dyck. p. 330. — Pfeiff. I. c. 100. — Erectus subarti- 

 culatus 5-anguIaris, coerulcsccns: costis comprcssis obrepandis; aculeis flavi- 

 canlibus cx areola laliuscula brunnco -tomcntosa, vix lanifera, cxlcriorib. ra- 

 diantib. validiusculis, binis supremis cum ceiitrali 1 duplo longioribus. — Cer. 

 fonnosus Horl. — Crescit in Montevidco. 



94. C. LAETUS DC. Prodr. III. p. 400. — Pfeiff. I. c. 107. — Ereclus laele virescens 

 articulatus: arliculis 7-angnIaribus; angulis tnberculatis; tubcrculis fasciculato- 

 spinosis. — Cact. laelus H. B. ct Ktli. Nov. gen. Am. VI. p. 03. — In Quito. 



95. C. PANICULATUS DC. 1. c. — Pfciff. 1. c. — Trunco erccto; ramis ex apice 

 trunci paniculalis, 4-gonis, basi articulalis; spinis fasciculatis brcvibus. — Cact. 

 paniculatus Lam. Dict. I. p. 540. — Melocact. arhorescens tetragonus, florc ex- 

 albido. Plum. Cat. pl. p. 19. — Tourn. Inst. p. 053. — Plum. ed. Burm. t. 192. — 

 Crescit ? 



* * * Extensi. 



Caule suberecto; ramis plcrumque diffusis, gracilibus, 3-5-gonis; costis 

 compressis. 



96. C. ACUTANGULUS Otto mss. ex Pfeiff. I. c. 107. — Subcrcctus subarticulatus 

 4-anguIaris, pcrviridis nilidus: costis comprcssissimis obrepandis, circum areolas 

 inllatis; sinubus latis profundis, serius planis; areolis distanlibus transverse 

 ellipticis; aculeis e tomento brcvi fuscidulo, radiantib. 4-0, binis iiifimis semper 

 minimis, centrali plerumque 1 subulato cinerasccQte. — Cer. undulatus Hort. 

 Dresd. — Crescit in Mexico. 



97. C. PELLUCIDUS Olto mss. ex Pfeiff. I. c. 108. - Suberectus, basi ramosus, 5- 

 angularis, j^ellucide viridis: costis juniorib. acualis, fere membranaceis, serius 

 obtusis, obrepandis, infra areolas inllatis; areolis subnudis; aculeis rectis, junio- 

 rib. aureis, tandem fulvis, radiantib. 9, centrali 1 longiore. — In insula Cuba. 



98. C. PRINCEPS H. Wiirzb. ex Pfeiff. 1. c. — Ercctus ramosus, subarliculatus, 3-, 

 rarius 4-5-angularis: sinubus planis; costis compressis infra arcolas inflatis; 



