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Schlumbergera microsphaerica
''Schlumbergera microsphaerica'' is a species of plant in the Cactaceae family. It is endemic to a limited area of the coastal mountains of south-eastern Brazil where its natural habitat is rocky areas above . It is threatened by habitat loss.〔 It is in the same genus as the popular house plant known as Christmas Cactus or Thanksgiving Cactus.
==Description==
''Schlumbergera microsphaerica'' resembles other species of the genus ''Schlumbergera'' in that it has leafless green stems, made up of distinct segments, which act as photosynthetic organs. However, most other species have strongly flattened stems, whereas ''S. microsphaerica'' has branching stems made up of narrow, more or less cylinder-shaped segments, each long by in diameter.〔
Special structures characteristic of cacti, called "areoles", occur in a roughly spiral fashion over the stems. The areoles, which may have bristles, are where the flower buds appear. The flowers usually hang down and are more or less regular (radially symmetrical or actinomorphic). They are described as "fuchsia red" to white in colour and are about long. In cultivation in the Northern Hemisphere, plants flower in the spring – March to April.〔〔
The fruit is green, with up to five not very prominent ribs. The brown seeds have a diameter of about .〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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