Schlumbergera opuntioides (Loefgr. & Dusén) D.R.Hunt

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Schlumbergera opuntioides is a species of plant in the family Cactaceae. It is endemic to the coastal mountains of south-eastern Brazil where its natural habitats are humid forests and rocky areas. It is threatened by habitat loss. It is in the same genus as the popular house plant known as Christmas Cactus or Thanksgiving Cactus.

Schlumbergera - Wikipedia

Description

Schlumbergera opuntioides 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 stems which are consistently strongly flattened, whereas in S. opuntioides, although young segments may be relatively flat, being 1.5–7.0 cm (0.6–2.8 in) long by 0.5–3.0 cm (0.2–1.2 in) wide, but only up to 9 mm (0.4 in) thick, the segments become more cylinder-shaped as they age, as well as becoming more woody. The plant may form a shrub up to 1.2 m (4 ft) tall.

Special structures characteristic of cacti, called "areoles", occur in a roughly spiral fashion on the segments; most young segments have many areoles but a few have only a small number. The areoles, which normally have bristles which become stiffer with age, are where the flower buds appear. The flowers are held so that they are more or less horizontal; the upper side is different from the lower side (bilaterally symmetrical or zygomorphic). They are pink to purple in colour and about 6 cm (2.4 in) long with a diameter of 4.5 cm (1.8 in). The inner petals are fused at the base to form a "floral tube", which is white. In cultivation in the Northern Hemisphere, plants flower in the spring – March to April.

The fruit is green, more or less spherical with four to five ribs. The brown to black seeds are about 1.75 mm (0.07 in) long.

Schlumbergera opuntioides - Wikipedia

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