184 THE CACTACEAE. 
Type locality: Minas Geraes, Brazil. 
Distribution: Brazil. 
While the joints are usually much flattened, yet they are sometimes strongly angled. 
In some cases too the juvenile growth is peculiar, forming short stubby joints with 6 ribs, 
with closely set areoles, each bearing a cluster of 7 or more bristly spines. 
The plant flowers abundantly in Washington in April. 
The two varieties Epiphyllum gaertneri coccineum and E. gaertnert mackoyanum 
(Monatsschr. Kakteenk. 7: 101. 1897) are doubtless forms of this species. 
[llustrations: Wiener Ill. Gart. Zeit. 10: 136. f. 60; Rev. Hort. 59: pl. opp. 516; Blanc, 
Cacti 64. 1002; Cact. Journ. 1: 9, 114; Gartenflora 33: pl. 1172; 39: f. 96; Rev. Hort. 
Belg. 15: f. 23; pl. [19.] f. 2, opp. 229, as Epiphyllum russellianum gaertnert; Schelle, 
Handb. Kakteenk. 213. f. 141; Curtis’s Bot. Mag. 117: pl. 7201; Gartenwelt 10: 559, 
as Epiphyllum gaertneri; Bliihende Kakteen 1: pl. 21; Thomas, Zimmerkultur Kakteen 
Fic. 193.—Schlumbergera gaertneri. 
19; Monatsschr. Kakteenk. 4: 107; Riimpler, Sukkulenten 148. f. 80, as Phyllocactus 
gaertneri; Rev. Hort. Belg. 15: pl. [19.] f. 1, opp. 229; Journ. Hort. Home Farm. III. 18: 
362. f. 58, as Epiphyllum makoyanum. 
Figure 192 is froma photograph of a plant which flowered in the New York Botanical 
Garden in 1912; figure 193 shows a fruiting plant in the collections of the U. S. Department 
of Agriculture at Washington, D. C. 
2. Schlumbergera russelliana (Gardner) Britton and Rose, Contr. U. S. Nat. Herb. 16: 261. 1913. 
Cereus russellianus Gardner in Lemaire, Hort. Univ. 1: 31. 18 
Epiphyllum russellianum Hooker in Curtis’s Bot. Mag. b6: pl. Baie. 1840 
Phyllocactus russellianus Salm-Dyck, Cact. Hort. Dyck. 1844. 37. 1845. , 
Epiphyllum truncatum russellianum G. Don in Loudon, Encycl. Pl. ed. 3.1378. 1855. 
Schlumbergera epiphylloides Lemaire, Rev. Hort. IV. 7: 253. 1858. 
Epiphytic, growing on trees, rocks, or in humus, often found in dark crevices, 1 to 3 dm. long, 
either hanging or erect, much branched, divided into short joints; joints 1 to 2.5 cm. long; lower 
joints usually terete, covered with a brown epidermis: young joints green, flat, usually thin, with 
I or 2 small teeth on a side, 8 mm. broad or less, usually truncate at apex; areoles in axils of teeth, 
small, naked or bearing 1 or 2 bristles; flowers terminal, 4 to 5 cm. long, reddish purple; style 
slender, purple; ovary glabrous, sharply 4-angled, 1-celled; ovules numerous, arranged in 4 or 5 
vertical double rows along walls of ovary; fruit described as red, 4-angled, or narrowly winded. 
