44 THE CACTACEAE. 



24. Cephalocereus nobilis (Haworth) Britton and Rose, Contr. U. S. Nat. Herb. 12: 418. 1909. 



Cereus nobilis Haworth, Syn. PI. Succ. 179. 1812. 



Cactus strictus Willdenow, Enum. Suppl. 32. 1813. Not C. strictus Haworth, 1S03. 



Cactus haworthii Sprengel, Syst. 2: 495. 1825. 



Cactus niger Salm-Dyck in Sprengel, Syst. 2: 495. 1825. 



Cereus strictus De Candolle, Prodr. 3: 465. 1828. 



Cereus haworthii De Candolle, Prodr. 3: 465. 1828. 



Cereus aureus Salm-Dyck in De Candolle, Prodr. 3: 465. 1828. 



Cereus curtisii Otto in Pfeiffer, Enum. Cact. 81. 1S37. 



Cereus lutescens Salm-Dyck in Pfeiffer, Enum. Cact. 84. 1837. 



Cereus violaceus Lemaire, Cact. Gen. Nov. Sp. 57. 1839. 



Cereus nigricans Lemaire, Cact. Gen. Nov. Sp. 57. 1839. 



Pilocereus curtisii Salm-Dyck, Cact. Hort. Dyck. 1844. 24. 1845. 



Pilocereus consolei Lemaire, Rev. Hort. 1862: 427. 1862. 



Pilocereus haworthii Console in Lemaire, Rev. Hort. 1862: 428. 1862. 



Pilocereus nigricans Sencke in Lemaire, Illustr. Hoit. 13: Misc. 20. 1866. 



Pilocereus lutescens Rumpler in Forster, Handb. Cact. ed. 2. 675. 1885. 



Pilocereus strictus Rumpler in Forster, Handb. Cact. ed. 2. 687. 1885. 



Pilocereus nobilis Schumann in Engler and Prantl, Pflanzenfam. 3« a . .181. 1894. 



Pilocereus strictus consolei Schumann, Gesamtb. Kakteen 190. 1897. 



Plant much branched and spreading, the ultimate branches slender, erect, green, shining when 

 young, not at all glaucous, 8 to 10-ribbed; areoles about 1 cm. apart, at first producing only a little 

 wool and this appressed against the ribs, but wool in flowering areoles very dense but short, white; 

 spines up to 3.5 cm. long, acicular, at first yellow, soon brown; flower-buds obtuse or nearly truncate; 

 flowers 4 to 6 cm. long; upper scales and outer perianth-segments broad, rounded at apex; inner 

 perianth-segments purple; style exserted; fruit depressed-globose. 



Type locality: West Indies. 



Distribution: St. Christopher to Grenada. 



The plant has escaped from cultivation on the island of St. Thomas, and has been 

 grown at Hope Gardens, Jamaica. 



As to the locality for C. curtisii, Pfeiffer (Enum. Cact. 81. 1837) gives Grenada, fol- 

 lowing Hooker, who originally published it as from Grenada, while Pfeiffer and Otto (Abbild. 

 Beschr. Cact. 1 : pi. 11) give New Granada also as its original habitat. 



Cereus aureus pallidior Salm-Dyck (Hort. Dyck. 63. 1834), given by name only, is 

 referred by Pfeiffer (Enum. Cact. 84. 1837) as a synonym of C. lutescens Salm-Dyck. 



Cereus mollis and C. nigricans (Pfeiffer, Enum. Cact. 83. 1837) and C. mollis nigricans 

 (Labouret, Monogr. Cact. 349. 1853) were given as synonyms of Cereus strictus. C. niger* 

 Salm-Dyck (Observ. Bot. 3:4. 1822) and C. niger gracilior Salm-Dyck (Hort. Dyck. 63. 

 1834) may also belong here. Cereus trichacanthus (Salm-Dyck, Cact. Hort. Dyck. 1849. 

 46. 1850) was given as a synonym of Cereus lutescens and Pilocereus trichacanthus (Rumpler 

 in Forster, Handb. Cact. ed. 2. 675. 1885) of Pilocereus lutescens. Here also, Echinocereus 

 trichacanthus, only a name, is referred by the Index Kewensis. 



Illustrations: Rep. Mo. Bot. Gard. 16: pi. 4, f. 2, as Cereus strictus; Pfeiffer and Otto, 

 Abbild. Beschr. Cact. 1 : pi. 11, as Cereus curtisii; Curtis's Bot. Mag. 59: pi. 3125, as Cereus 

 royeni; Krook, Handb. Cact. 92, as Pilocereus. 



Plate vi, figure 2, shows a flowering branch of a plant in the collection of the New 

 York Botanical Garden. Figure 64 is from a photograph of the plant growing on St. 

 Thomas, taken by W. R. Fitch in 19 13. 



25. Cephalocereus barbadensis sp. nov. 



Plant light green, tall, 3 to 6 meters high, with ascending or spreading columnar branches; ribs 

 usually 8 or 9, high, separated by acute intervals; areoles 1 cm. apart; spines acicular, 1 to 4 cm. 



* Pilocereus niger is different from Cactus niger Salm-Dyck and is not a synonym of Cereus nobilis, although it 

 was referred to P. strictus by Schumann (Gesamtb. Kakteen 189. 1897). Neumann described Pilocereus niger 

 (Rev. Hort. II. 4: 289. 1845), a new species based on plants sent from Mexico by M. Ocampo. This species in the 

 Index Kewensis and also in Schumann's Monograph is attributed to Poiteau, one.of the editors of the Revue, but the 

 article is signed by Neumann and, therefore, he should be made the author for the name. The Index Kewensis also 

 makes it a synonym of Cereus niger, which it is not, nor should it be referred to this plant as it is by Schumann. 



