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Zygocactus (cactus with zygomorphic flowers). Epiphyllum of horticulturists. Cactaceae. Crab-cactus. This genus is confined to Brazil, so far as known, where the plants grow as epiphytes upon the trees, along with orchids, growing in large clusters on the branches: sts. flat and jointed, becoming rounded with age, bearing areoles only on the margins and more or less truncated ends, from which grow the new branches and the conspicuously zygomorphic fls.; ovary devoid of bracts, and those of the tube comparatively large and colored as the petals. The genus is allied to Epiphyllum (Phyllocactus), with which it was at first united; but it is still more closely connected with Schlumbergera. In cult. many forms have been produced through hybridization between the different species and with Epiphyllum and the allies of Cereus, so that typical plants are rarely met with.

Zygocactus (cactus with zygomorphic flowers). Epiphyllum of horticulturists. Cactaceae. Crab-cactus. This genus is confined to Brazil, so far as known, where the plants grow as epiphytes upon the trees, along with orchids, growing in large clusters on the branches: sts. flat and jointed, becoming rounded with age, bearing areoles only on the margins and more or less truncated ends, from which grow the new branches and the conspicuously zygomorphic fls.; ovary devoid of bracts, and those of the tube comparatively large and colored as the petals. The genus is allied to Epiphyllum (Phyllocactus), with which it was at first united; but it is still more closely connected with Schlumbergera. In cult. many forms have been produced through hybridization between the different species and with Epiphyllum and the allies of Cereus, so that typical plants are rarely met with.

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