OREOCEREUS. 



171 



Distrihiition: Arid parts of Bahia and 

 Piauhy, Brazil. 



Plate XXV, figure 4, shows the flowering 

 top of a plant obtained by Dr. Rose near 

 Joazeiro, Brazil, in 1915, which flowered soon 

 afterward in the New York Botanical Garden ; 

 plate XXVII, figure i , shows a fruiting branch 

 of a plant collected by Dr. Rose near Salgada, 



Bahia, in 1915. 



W 



2. Arrojadoa penicillata (Giirke). 



Cereus penicillatus Giirke, Monatsschr. Kak- 

 teenk. 18: 70. 1908. 



Plant slender, i to 2 meters high, much 

 branched, often bushy, the branches i to 1.5 cm. 

 in diameter; ribs usually 10, low; areoles small, 

 close together; spines several ; radial spines short, 

 spreading; central spines longer, often 2 to 3 cm. 

 long; pseudocephalium at the top of the joint 

 2 to 3 cm. in diameter, made up of long brown 

 bristles and white wool ; flowers 6 to 20 in a cluster, 

 dark pink, 3 cm. long; fruit small, a little longer 

 than broad, 1.5 cm. long, smooth, without scales, 

 purplish, juicy; seeds numerous, black. 



Type locality: Calderao, Bahia, Brazil. 



Distribution: State of Bahia, Brazil. 



Figure 243 is from a photograph taken 

 by Paul G. Russell at Machado Portella, 

 Bahia, in 1915. 



r^ 



-* 



.'■ 



■-**^ 



. '"'* 





>IF 



w: 



^T**^— .^^^'^ 







Fig. 243. — Arrojadoa penicillata 



o 



OREO CEREUS 



1909 



Plants forming large clusters, usually low, erect, ascending or even prostrate without a 

 cephalium, but the areoles developing long white hairs, especially toward the tips of old branches, 

 the stout stems and branches strongly ribbed; ribs strongly armed with ^P^"^^: A^^-^.f^^f^^/ 

 elongated, somewhat curved, diurnal; tube nearly cylmdric, shghtly expanded upward, the limb 

 short spreading, somewhat oblique, the inner perianth-segments dark red. narrow; filaments 

 numerous slender, exserted, attached all over the throat; anthers narrow, red; style long exsertcc , 

 ^th shori green stigma-lobes ; ovary and flower-tube bearing small narrow scales, with long black 

 rdvvhite hairs in their axils; fruit globular, spineless, dry dehiscing (like Echtnocactus) by a basal 



^---- d •i4 1 *J ^ -* i- --V -J 1 « « 1 « * 4-*^ 



^1- 



opening; seeds numerous, dull black, with a large 'truncated hilum. 



The name is from the Greek, signifying mountain 

 so far as known to us. The following species inhabits the Andes: 



Oreocereus celsianus (Lemaire) Riccobono, Boll. R. Ort. Palermo 8: 259. 1909. 



The genus is monotypic, in 



1850. 



1885. 

 1885. 



Pilocereus celsianus Lemaire in Salm-Dyck, Cact. Hort Dyck. 1849- 185. 

 Pilocereus fossulatus Labouret, Rev. Hort IV. 4: 24- i»55. 

 Pilocereus bruennowii Haage in Forster, Handb. Cact. ed. 2 65 . 188, 

 Pilocereus jossulatus gracilis Rump er in Forster. Handb. Cact ed. 2 66 . 

 Pilocereus fossulatus pilosior Riimplerin Forster. Handb. Cact. ed. 2. 66.. 



■>Pilnrprpu<; kan-leri Haaee in Forster, Handb. Cact. ed. 2. 671. i«fJ- 



•S "": S"^;"s /L'^,/n...W Salm-Dyck in Schumann Gesamt.Kakteen .80. 

 Pilocereus celsianus graciUor Schumann, Gesamtb kaktecn 8a 1897.^ 

 Pilocereus celsianus williamsii Schumann, Gesamtb^ ^^^■^''.Zr. ,80 1 So7 

 Pilocereus celsianus bruennowii Schumann, Gesamtb. Kaktcen 180. i897- 

 aScr/«r.X-a««. Weber in Gossdin Bull. Mens. Sue. Nice 44: 44- >904. 

 Cereus celsianus Berger, Rep. Mo. Bot. Card. 16: 64. 1905- 



1 Pilocereus straussii Heese, Gartenflora 56 : 4 1 o. 1 907- 



>Cereus straussii Yanpd. Monatsschr. Kakteenk. 23.37- I9i3. 

 Oreocereus celsianus bruennowii Britton and Rose. Stand. Cycl. Hort. Ba.lc> 4- n"4- 



1897. 



1916. 



