. Carnegie Institution of Washington publication. 84 THIv CACTACKAK. (o the towns and used for firewood. The flowers begin to appear late in < letober; the fruit is eaten by animals, doubtless by birds, as all old fruits had large holes on one side, and no seeds remained. Plate xv, figure i, shows the top of plant collected by Dr. Rose at Antofagasta, 1914. 3. Eulychnia acida Philippi, Linnaea 33: So. 1864. Gereim m idus Schumann, Gcsamtb. Kaktcen Nachtr. 22. 1903. Plant various in habit, usually 3 to 7 meters high, with a definite trunk i meter long and then more or less branching, forming


. Carnegie Institution of Washington publication. 84 THIv CACTACKAK. (o the towns and used for firewood. The flowers begin to appear late in < letober; the fruit is eaten by animals, doubtless by birds, as all old fruits had large holes on one side, and no seeds remained. Plate xv, figure i, shows the top of plant collected by Dr. Rose at Antofagasta, 1914. 3. Eulychnia acida Philippi, Linnaea 33: So. 1864. Gereim m idus Schumann, Gcsamtb. Kaktcen Nachtr. 22. 1903. Plant various in habit, usually 3 to 7 meters high, with a definite trunk i meter long and then more or less branching, forming a more or less rounded top, but sometimes without trunk, forming a low mass i meter high or less, with branches often procumbent or ascending; ribs 11 to 13, broad and low; spines various, nearly porrect, grayish in age but brownish when young, sometimes 20 cm. long; flowers 5 cm. long, turbinate, 13 cm. in circumference at top; ovary and tube covered with small, ovate, imbricating scales, fleshy at base but with acute, callous tips; limb somewhat oblique; inner perianth-segments at first pale rose-colored, then white, 20 to 22 mm. long; throat very short, covered with stamens; stamens white, i to cm. long, included; style 2 cm. long, stiff, white, with 12 to 15 stigma-lobes; fruit fleshy, somewhat acid. /'r/v locality: Near Illapel and Choapa, Chile. Distribution: From near Choapa to Copiapo, in western Chile. This species is called tuna de cobado by the natives, according to Philippi. This species was originally described from material obtained by Landbeck near Illapel and Choapa, but nothing of the type has been preserved in the Philippi herbarium at San- tiago. Dr. Rose, however, visited both Illapel and Choapa in 1914, and was able to decide definitely upon the species described by Philippi. At both places E. acida was quite common, usually grow- ing with Cereus chiloensis, but from which it differs so much in habit and flowers that one is soon able to distinguish the


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