CEREUS. 



GAGTEAE. 327 



acuto; fasciculis approximatis; areola tomentosa; aculeis 3 brevib. setaceis di- 

 vergentibus. — Caulis vix pollicem longus et crassus. An Echinocactus? — 3Iexico. 

 ** 5 -12- angulares. 

 Caule ereclo columnari 5-12-suIcalo; areolis lanuginosis vel nudis. 



a. Lanuginosi. 

 Areolis praeler tomentum brevissimum spiniferum lanugine lloccosa inslruclis. 



19. C. LANUGINOSUS Haw. Syn. p. 182. — Pfeiff. I. c. 80. — Erectus 8-10-angulatus 

 viridis: angulis obsoletis; areolis subconfertis lanatis; aculeis flavis elongatis, 

 centralib. 3, exteriorib. 10-12, lanam albam crispulam aequantibus. — Cact. lanu- 

 ginosus L. — Herm. Lugd. Bat. par. t. 115 sine fl. — C. repandus 3Iill. Dict. ed. 8. 



— J3. glaucescens. — C. Royeni U. Goett. — Trunco glaucescenle; aculeis flavis. — 

 Crescit in insulis Caribaeis et in America aequinocliali. 



20. C. ROITNI Haw. Sjn. p. 182. — Pfeiff. I. c. 80. — Erectus simplex 8-9-anguIa- 

 ris coerulescens, tandem pallide virens: costis obtusis undulatis; areolis appro— 

 ximatis, tomentum fuscum et lanam albam crispulam persislenlem gerenlib.; acu- 

 leis gracilib. rectis laele fuscis, lana vix longiorib., exleriorib. 10, cenlralib. 3-4 

 paullo validioribus. — C. Royeni L. — Royen. Lugd. Bat. 279. — Cer. lanuginosus 

 Mill. Dict. n. 7. — Herm. Par. bot. 114. — Cer. gloriosus Hort. — (Nec C. Royeni 

 DC. Pl. gr. t. 143!) — Crescit in insulis Caribaeis et in Antillis. 



21. C. FLOCCOSUS Otlo mss. ex Pfeiff. I. c. 81. — Ereclus 10-anguIaris: sinubus 

 profundis acutis; costis compressis obrepandis; areolis approximatis tomentosis, 

 lana copiosissima alba, aculeis longiore, instruclis; aculeis exleriorib. 8-10 inae— 

 qualib., centralib. 3-4 longiorib., omnib. rectis rigidiusculis fuscis. — Crescit in 

 St. Thomas, insula Tortola. 



22. C. ARMATUS Otto mss. ex Pfeiff. I. c. — Erectus 7-anguIaris pallide virens, 

 vix glaucescens: sinubus latis; costis subcompressis; areolis approximatis floc— 

 cosis; aculeis 8-10 inaequalib. divergenlib. flavidis tenuib. rigidis. — Habitat in 

 Sl. Thomas. 



23. C. CURTISl Olto mss. ex Pfeiff. I. c. 81. f — Otto et Pfeiff. Abbildng. u. Be- 

 schreibng. bluhend. Cact. t. 11 ! f — Erectus obscure viridis 8-anguIaris: sinubus 

 profundis; costis compressis; areolis convexis, tomento fulvo et lana sericea 

 alba aculeos aequante inslructis; aculeis rectis acicularib. brunneis, cenlralib. 

 4, exteriorib. 8-10, supremis minimis. — C. Royeni Bot. 3Iag. t. 3125, (nec. C. 

 Royeni L.) — Cereus octogonus H. Angl. — Crescit in Granada. 



24. C. FULVISPINOSUS Uaw. Syn. p. 1&3. — Pfeiff. I. c. 82. — Erectus longus sub- 

 9-anguIaris, sulcalus ramosusve: aculeis validis fulvescentib., seniorib. subinde 

 uncialibus. — Cact. Royeni Mill. Dict. ed. 8. — An praecedenti aequalis? — Cres- 

 cit in America meridionali. 



25. C. FLAVISPINUS S. Dyck, Obs. bot. 1822. p. 5. — Pfeiff. I. c. — Erectus sim- 

 plex viridis 6-9-anguIaris : costis oblusis; areolis approximatis albo-Ianuginosis; 

 aculeis exteriorib. 8-12 flavidis palentib., centralib. 3-4 divergenlib. fulvis lon- 

 giorib., supremo erecto longissimo. — An C. flavispinus CoIIa, Hort. Ripul. 24? 



— Crescit in America meridionali. 



26. C. HAWORTHII DC. — Pfeiff. 1. c 82. — Erectus simplex 5-, rarius 6-angularis: 

 sinubus planis; costis juniorib. compresso — repandis, tandem obsoletis; areolis 

 subremotis albo-lanuginosis; aculeis exleriorib. sub 10 gracilib., irregulariter ra— 

 diantib., centralib. 3-4 longiorib. rigidiorib. fulvis. — Cact. Uaworthii Spr. — 

 Cer. nohilis Haw. Syn. p. 179 {??) — Crescit in Insul. Caribaeis. 



27. C. STRICTUS DC. — Pfeiff. I. c. 83. — Erectus robustus olivaceus 7-8-anguIaris : 

 sinubus latis profundis; costis subcompressis repandis; areolis parum distantib. 

 albo-tomentosis, vix lanatis; aculeis exleriorib. 8, centralib. 4 longiorib., omnib. 

 rectis rigidis fulvis, basi brunneis, seniorib. griseis. — Cact. strictus W. Enum. 

 Suppl. 32. — Cereus mollis, nigricans, repandus spin. aureis Hort. — Amer. calid. 



23. C. NIGER S. Dyck, Observ. bot. 1822. p. 4. — Haw. Rev. p. 70.— Pfeiff. 1. c. 83. 



— Erectus simplex 6-8-anguIaris, apice atrovirens, tandem niger: costis subcora- 



