The Cactaceae : descriptions and illustrations of plants of the cactus family . -M E. Eaton <iel Flower on branch of Selenicereus coniflorus.(Natural size.) SELENICEREUS. 203 several, 2 mm. long or less; flowers 30 to 34 cm. long; outer perianth-segments and upper scales linear,yellow, the outermost scales red or brownish; inner perianth-segments pure white, 10 mm. long,oblanceolate, 2 to 3 cm. broad at widest point, acute; tube proper 12 cm. long, clothed with smallscales bearing brown hairs and spines in their axils; fruit oblong, about 8 cm. Fig. 280.—Selenicereus macdonaldiae. Ty
The Cactaceae : descriptions and illustrations of plants of the cactus family . -M E. Eaton <iel Flower on branch of Selenicereus coniflorus.(Natural size.) SELENICEREUS. 203 several, 2 mm. long or less; flowers 30 to 34 cm. long; outer perianth-segments and upper scales linear,yellow, the outermost scales red or brownish; inner perianth-segments pure white, 10 mm. long,oblanceolate, 2 to 3 cm. broad at widest point, acute; tube proper 12 cm. long, clothed with smallscales bearing brown hairs and spines in their axils; fruit oblong, about 8 cm. Fig. 280.—Selenicereus macdonaldiae. Type locality: Cited as Honduras. Distribution: According to Dr. Spegazzini (Anal. Mus. Nac. Buenos Aires III. 4:484),it is found in Uruguay and Argentina, and he thinks that Maldonado, near Montevideo,is the type locality; we know only plants in cultivation. Cereus donatii (Schumann, Monatsschr. Kakteenk. 13: 185. 1903), first listed in Haageand Schmidts Catalogue, seems to belong here. Cereus grusonianus Weingart (Monats-schr. Kakteenk. 15: 54. 1905) is apparentlya race of this species, judging from the descrip-tion and from small plants at the New YorkBotanical Garden. Illustrations: Cact. Journ. 2: 135;Curtiss Bot. Mag. 79: pi. 4707; Fl. Serr. 9: , 897; Cassells Diet. Gard. 1: 194;Monats-schr. Kakteenk. 14:57, all as Cereus macdon-aldiae; Contr. U. S. Nat. Herb. 12: pi. 76. Figure 280 shows a flower of a plant inthe collection of the United States Departmentof Agriculture; figure 279 shows a piece of abranch from a plant in the New York
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