The stems are composed of segments, which take one of two forms. They are leafless, the green stems acting as photosynthetic organs. In the wild, the species of Schlumbergera grow either on trees ( epiphytic) or on rocks ( epilithic) and can form sizeable shrubs with woody bases a height of up to 1.2 m (4 ft) has been reported for one species ( S. Truncata Group, cut in half to show its internal structure They generally flower later than members of the Truncata Group and are more likely to be called Christmas cactus.ĭescription Zygomorphic flower, probably of a cultivar in the S. russelliana: stem segments with rounded, more symmetrical teeth more or less symmetrical (regular) flowers which hang down, below the horizontal and pollen which is pink.
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