. Carnegie Institution of Washington publication. THE CACTACEAE. as thick at top as at base; limb short; outer perianth-segments linear, about 10, nearly twice as long •is the inner ones; inner perianth-segments narrowly oblanceolate, acute or acuminate; filaments IK it extending beyond the inner perianth-segments; limb short; fruit to cm. long, spiny. 7"v/v locality: In the swampy woods near Manaos, Brazil. Distribution: Very abundant and widely distributed in the swampy forests of the Amazon, Brazil. We have in our collection a part of the type material. The following account of


. Carnegie Institution of Washington publication. THE CACTACEAE. as thick at top as at base; limb short; outer perianth-segments linear, about 10, nearly twice as long •is the inner ones; inner perianth-segments narrowly oblanceolate, acute or acuminate; filaments IK it extending beyond the inner perianth-segments; limb short; fruit to cm. long, spiny. 7"v/v locality: In the swampy woods near Manaos, Brazil. Distribution: Very abundant and widely distributed in the swampy forests of the Amazon, Brazil. We have in our collection a part of the type material. The following account of this very re- markable plant is from the pen of Karl Schu- mann and was published in the Gardeners' Chronicle in 1901 p. 78: "Among the numerous novelties which the last decade of the past century brought to Europe, the above named is surely one of the most inter- esting for both the amateur and the professional cultivator. I received this curious plant through the kindness of Mr. N. H. Witt, of Manaos, Erlado do Amazonas, Brazil. He told me long before he was able to send specimens that a climb- ing species of a genus he was not able to determine, grew in the swampy forest, or Igape, on the Amazon river. Closely appressed to the stems of the trees, and fixed to them by numerous roots, in the region of the yearly inundation, there creeps a cactus with the habit of a Pliyllocactus, but armed with very sharp spines. It is so closely connected with the plant on which it grows that one must look carefully to distinguish it. "When I had the specimen in my hand after it was taken out, I did not at all know how to class it. I was not able even to indicate the genus. It could not belong to Pliyllocactus, however much the form of the leaf-like joints suggested that genus. Perhaps it might be a very abnormal species of Rliipsalis, but the flowers or fruits being absent, the question could not be answered. "Last autumn I was fortunate enough to get, by the aid of Mr. N.


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