44 TIIlv C.UTACI-AK. 



24. Cephalocereus nobilis (llauoith) Britton and Knsi-, Cmitr. \'. S. Nal. HIT!). 12: |iS. 1909. 



, :is iitiliilis llawnrth, Syn. I'l. Slice. 179. 1812. 



:is strictus \Villik-no\v, Ivninn. Suppl. .(- 1*15 XotC s/nV/j Haworth, iSo.?. 

 fijj Sprerigel, Syst. 2: 495. isj.s 



W H/i;.'r Salm llyck ill Sprcii^rl, Syst. 2: 495. 1825. 



IM strictus IK- Candollu. 1'rodr. 3:465. 1828. 



W Ini'tCorlliii IV (.'aiulolli-, 1'rodr. 3: 46.1. 1828. 

 (VrcH.v iiuri'iis Salm-Dyck in DC Caudolle, Prodr. 3:465. 1828. 

 Ct-r, us curlisii Otto in PfeitTcr, Kuum. Cact. 81. 1837. 

 Cereus /;</<v,. H\ Salm-Dyck in PfcilTer, Enum. Cact. 84. 1837. 

 Cerent violaceus U-tnaire, Cact. Gen. Nov. Sp. 57. isv>. 

 Cereus nigricans I.cmaire, Cact. Gen. Nov. Sp. 57. 1839. 

 PilocereiU < urli^/i Salin-Dyck. Cact. Hort. Dyck. 1844. 24. 1845. 

 Pilii/i'i-i'if- miiMilei I.emaire, Rev. Hort. 1862:427. 1862. 

 Pilocereui Im^'urlliii Console in Lemaire, Rev. Hort. 1862:428. 1862. 

 Pildn'ii-in iii^riniiis Sencke in Lemaire, Illnstr. Hoit. 13: Misc. 20. 1866. 

 Pilocereui liilfitcns Riimpler in Forster, Handb. Cact. ccl. 2. 675. 1885. 

 Pilocert'ns xtrictus Riimpler in Forster, Handb. Cact. ed. 2. 687. 1885. 

 /'//IHC/VH.V nohilis Schumann in Enj;ler and Prantl, Pflanzenfam. 3 a . 181. '894. 

 Pilocerens slridns console! 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 lo-ribbed; areoles about i 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. Si. 1837) gives Grenada, fol- 

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

 Beschr. Cact. i : pi. n) give New Granada also as its original habitat. 



Cereus aurcus f>allidior 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 (Riimpler 

 in Korster, Handb. Cact. ed. 2. 675. 1885) of Pilocereus Intcsccus. Here also, Echhwccmts 

 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. I :pl. n, as Cereus curtisii; Curtis's Bot. Mag. 59: pi. 3125, as Ccrcits 

 roycni; 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 1913. 



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 i cm. apart; spines acicular, i 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. slncttis by Schumann (Gesamtb. Kakteen 189. 1897). Neumann described Pilocereus nier 

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

 ItuU-x Ki-wensis 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. 



