Raffles' pitcher-plant (Nepenthes rafflesiana)
Description
Nepenthes rafflesiana (after Stamford Raffles), or Raffles' pitcher-plant, is a species of tropical pitcher plant. It has a very wide distribution covering Borneo, Sumatra, Peninsular Malaysia, and Singapore. Nepenthes rafflesiana is extremely variable, with numerous forms and varieties described. In Borneo alone, there are at least three distinct varieties. The giant form of this species produces enormous pitchers rivalling those of N. rajah in size. Nepenthes rafflesiana is a scrambling vine. The stem may climb to a height of 15 m and is up to 10 mm thick. Internodes are up to 20 cm long. Tendrils may be over 110 cm long. The lower pitchers of N. rafflesiana are bulbous and possess well-developed fringed wings. These terrestrial traps rarely exceed 20 cm in height, although the giant form of N. rafflesiana is known produce pitchers up to 35 cm long and 15 cm wide. Upper pitchers are funnel-shaped and often bear a distinctive raised section at the front of the peristome. Both types of pitchers have a characteristically elongated peristome neck that may be 3 cm or more in length. Pitcher colouration varies greatly from dark purple to almost completely white. The typical form of N. rafflesiana is light green throughout with heavy purple blotches on the lower pitchers and cream-coloured aerial pitchers. The inflorescence is a raceme and grows between 16 and 70 cm tall. The red or purple flowers usually occur singly, or sometimes in pairs, on each flower-stalk. Young plants are wholly covered with long, caducous, brown or white hairs. Mature plants often have a sparse indumentum of short, brown hairs, though they may be completely glabrous.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum:
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Class: Magnoliopsida
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Order: Caryophyllales
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Family: Nepenthaceae
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Genus: Nepenthes
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