Tuesday, February 19, 2008

Pineapple

The pineapple (Ananas comosus) is a tropical plant and fruit (multiple), inhabitant to Uruguay, Brazil, Puerto Rico, or Paraguay. It is a medium tall (1–1.5 m) herbaceous perennial plant with 30 or more trough-shaped and pointed leaves 30–100 cm long, nearby a thick stem. The pineapple is an illustration of a multiple fruit: multiple, spirally-arranged flowers along the axis each make a fleshy fruit that becomes pressed against the fruits of adjacent flowers, forming what appears to be a single fleshy fruit. The leaves of the cultivar 'Smooth Cayenne' mostly lack spines apart from at the leaf tip, but the cultivars 'Spanish' and 'Queen' have large spines along the leaf margins. Pineapples are the only bromeliad fruit in extensive cultivation. It is one of the most commercially important plants which take out Crassulacean acid metabolism, or CAM photosynthesis.

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