EPIPHYI.LUM. 



193 



f. 42, No. 4; Rother, Praktischer Leitfaden Kakteen 80, as Phyllocactus crenatus; Loudon, 

 Encycl. PI. ed. 3. 1379. f. 19401. 



Figure 199 is from a photograph showing the base and tip of a branch of this species 

 sent from Guatemala. 



Fig. 199. — Epiphyllum crenatum. 



9. Epiphyllum macropterum (Lemaire). 



Phyllocacliis macropterus Lemaire, Illustr. Hort. Ii: Misc. 73. 1864. 

 Phyllocactus thomasianus Schumann, Monatsschr. Kakteenk. 5: 6. 1895. 

 Phyllocactus costaricetisis Weber, Bull. Mus. Hist. Nat. Paris 8: 463. 1902. 

 ? Phyllocactus macrocarpus Weber, Bull, Mus. Hist. Nat. Paris 8: 464. 1902. 

 Epiphyllum costaricense Britton and Rose, Contr. U. S. Nat. Herb. 16: 256. 1913. 

 Epiphyllum thomasianiim Britton and Rose, Contr. U. S. Nat. Herb. 16: 259. 1913. 



Plants up to 2 meters long, the joints weak, sometimes 10 cm. broad, thin, their margins horny; 

 areoles distant (4 to 6 cm. apart) along the slightly indented margins; flower very large for genus, 

 long, curved as in Epiphyllum oxypetalum; scales of ovary small, green, spreading, with long hairs 

 in their axils; scales on tube longer (10 to 12 mm. long), less spreading but similar to those on ovary, 

 acute; outer perianth-segments narrow, salmon-colored or with yellow tips, 10 cm. long; inner 

 perianth-segments pure white, 8 to 9 cm. long, 2 to 3 cm. broad; tube of the flower 10 to 12 cm. 

 long ; throat 5 to 6 cm. long, funnelform, narrow below, 3 cm. broad at top ; stamens lemon-yellow, 

 slender, in 2 definite clusters, a single continuous row at top of throat, the second cluster scattered 

 all over throat except for intervals of 2 cm. below upper one ; style stout, 20 cm. long, pure white. 



Type locality: Not cited. 



Distribution: Costa Rica. 



According to Mr. Fraile, the flower always comes out on the under side of the joint 

 and lies appressed to it, instead of standing out free from it as in other species of the genus. 



A vigorous plant in greenhouse cultivation but it flowers only sparingly. 



Illustrations: Monatsschr. Kakteenk. 5: pi. [i]; Bliihende Kakteen i: pi. 41, as 

 Phyllocactus thomasianus. 



Plate XVII, figure i, shows a branch of a plant sent by Dr. Wm. R. Maxon from San 

 Jose, Costa Rica, which flowered in the New York Botanical Garden in 1912; figure 2 



