CEREUS. 



17 



This species is similar to the so-called Cereus cocrulcsccns, of Ardent 



usually has shorter spines. 



former has different stems 



from 



in 1846, which we do not know; but we are accepting as this species the plant so identified 

 and figured by T. Gurke as below cited. Our description of the flower 



this illustration. 



Dr. Schumann states that the species comes from 

 Dr. Rose collected specimens in 19115 which have beer 



is drawn from 



Walp 



seems 



polychaetus 



Illustrations: 



Kakteen 



aethiops Haworth, Phil. Mag 



1830. 



Cereus coerulescens Salm-Dyck, Hort. Dyck. 335. 1834. 

 Cereus landbeckii Philippi in Rcgel, Gartenflora 24: 162. 1875. 

 Cereus coerulescens landbeckii Schumann, Gcsamtb. Kakteen 122, 1897. 

 Cereus coerulescens melanacanthus Schumann, Gesamtb. Kakteen 122. 



1897. 



) purplish 

 toward t\ 



intervals 



solitary 



long, tubular, 22 cm. long, with a limb 12 cm. in diameter; outer perianth-segments linear-lanceolate 



segments 



along the inner surface of the long tube;^ fruit ovoid to oblong-ovoid, more or less brownish when 



smooth 



2 mm. long, coarsely tuberculate above, finely tuberculate at base, with a large depressed hilum. 



w _ ^ 



Typ 



Brazil. 



Distribution: Western 



ndory Hort us 



Enum. Cact. 85. 



Hortus 



(Schumann, Gesamtb. Kakteen 122. 1897), and C. nigrispinus Labouret (Schumann 



Gesamtb. Kakteen 

 Cereus 



I 



synonyms 



fulvispinus (Graebener, Monatsschr. Kakteenk 



C. coerulescens longispinus (Weingart, Monatsschr 

 here, but they have not been described. 



19: 137. 1909) and 

 1906) are referred 



Lem 



longer spines. 



large 



c ^ 



"9 



T ^ 





*»«■ 



We have followed Schumann and others in combining the plants from Brazil and 

 western Argentina under one name, although there are indications that the specimens from 

 Mendoza, Argentina, which were taken up by Philippi as C. landbeckii, are distinct. 



Mag. 68: pi. 3922; Pfeiffer, Abbild. Beschr. Cact. 2: pl^2^; 



Schumann. Gesamtb. Kakteen f. 28. all three as 



832, as Cereus landbeckii; 

 canthus. 



Kakteen 



127, as Cereus coerulescens nielana- 



Figure i6 is from a photograph taken at Alto Pencoso, San Luis, Argentina, by C. 

 Bruch in 1914; figure 17 shows a fruiting branch of C. aethiops from Mendoza, Argentina, 

 brought by Dr. Rose to the New York Botanical Garden in 19 15. 



22. Cereus repandus (Unnaeus) Miller, Gard. Diet. ed. 8, No. 5. 1768. 



Cactus repandus Linnaeus, Sp. PI. 467. 1753. 



Cereus hermannianus Suringar, Versl. Med. Akad. Wetensch. III. 2: 194. 1886. 



Pilocereus repandus Schumann in Engler and Pranti, Pflanzenfam. 36a; jSi, 1894, as to name. 



Tall, tree-like plant, up to 10 meters high, with a much branched top; trunk 4 dm. in diameter; 

 branches grayish green, usually upright or somewhat curved below, bearing numerous constrictions 



\- s^% 



A 



I 





t J 





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