192 THE CACTACEAE. 



This plant was first distributed by the Horticultural Society of London, which obtained 

 it from the collector, T. Hartweg, in 1846, from southern Mexico, where it was found 

 growing on oak trees. 



Phyllocactus angularis occurs in the index of Labouret's Monograph (511), credited to 

 Lemaire, and also is listed in the Index Kewensis. It may have been a manuscript name 

 for this species. 



Illustrations: Lemaire, Jard. Fleur. i : pi. 92 ; Lindley and Paxton, Fl. Gard. i : pi. 34; 

 Curtis's Bot. Mag. 85: pi. 5100; Diet. Gard. Nicholson 3: f. 134; Amer. Gard. 11: 538; 

 Mollers Deutsche Gart. Zeit. 25: 477. f. 11, No. 24; Cycl. Amer. Hort. Bailey i: f. 306; 

 Palmer, Cult. Cact. 167; Watson, Cact. Cult. 48. f. 11 ; ed. 3. f. 9; Floralia 42: 377, as Phyl- 

 locactus anguliger. 



7. Epiphyllum grandilobum (Weber) Britton and Rose, Contr. U. S. Nat. Herb. 16: 257. 1913. 



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



Branches bright green, very large, up to 25 cm. broad with the margins deeply lobed and with 

 a thick midvein and obtuse or rounded apex ; lobes rounded, 3 to 5 cm. long ; flowers described as 

 large, white, opening at night ; fruit red without. 



Type locality: La Hondura, Costa Rica. 



Distribution : Costa Rica. 



Weber speaks of this as a very remarkable species of which he had not seen flowers 

 or fruit. His description was based on specimens collected by Werckle in 1900 and also 

 by Pittier in 1905. 



Specimens of the type collection were obtained by Mr. Wm. R. Maxon from A. Brade 

 in Costa Rica in 1906 (No. 13), but these have never flowered. In the New York Botanical 

 Garden is a small specimen received from Werckle in 1902 as Epiphyllum grandilobum; 

 this shows one very deep lobe; a young joint shows shallow crenations and suggests E. 

 macropterum. A plant of this relationship was collected by Mr. Pittier in Panama in 191 1 

 (No. 4229) and is now growing in Washington, but has not flowered. 



We believe that Phyllocactus macrolobus of Schumann's Keys belongs here, the specific 

 name in error for grandilobus. 



8. Epiphyllum crenatum (Lindley) G. Don in Loudon, Encycl. PI. ed. 3. 1378. 1855. 



Cereus crenatus Lindley in Edwards's Bot. Reg. 30: pi. 31. 1844. 

 Phyllocactus crenatus* Lemaire, Hort. Univ. 6: 87. 1845. 

 Phyllocactus caulorrhizus Lemaire, Jard. Fleur. i: Misc. 6. 1851. 

 Epiphyllum caulorhizum G. Don in Loudon, Encycl. PI. ed. 3. 1380. 1855. 



Old stems woody and terete; branches glaucous, often rooting at the tips, rather stiff, 2 to 3 

 cm. broad, obtuse, erect, at least at first, with large deep crenations, cuneate at base, the midrib 

 thick; areoles at base of stem and branches often bearing hairs or small bristles; flowers very 

 fragrant, rather large, the limb 10 to 12 cm. broad, cream-colored to greenish yellow, tube 10 to 

 12 cm. long, slender, bearing linear scales 2 to 3 cm. long; inner perianth-segments oblanceolate, 6 

 cm. long; filaments yellow; style white; stigma-lobes narrow; ovary scaly, some of the scales 2 cm. 

 long, somewhat spreading. 



Type locality: Honduras. 



Distribution: Honduras and Guatemala. 



This species has long been a favorite with gardeners, and many hybrids with it have 

 been produced ; the flowers, which are delicately fragrant, are diurnal and remain expanded 

 for several days. 



Among hybrids with other species are Phyllocactus crenatus amaranthinus, P. elegans, 

 erleri, haageanus, lateritius, roseus, splendens, superbus, and vogelii. 



Illustrations: Edwards's Bot. Reg. 30: pi. 31, as Cereus crenatus; Bliihende Kakteen 3 : 

 pi. 180, as Phyllocactus crenatus vogelii; Gartenflora 40: pi. 1347; Garten-Zeitung 4: 182. 



* This name was also published by Walpers in 1843 (Repert. Bot. 2. 820). 



