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The Wallis's grammatophyllum (Grammatophyllum wallisii) belongs to Orchidaceae (the Orchid family). It is an evergreen herb that is found in the Philippines. It grows mainly in tropical biomes, and is an epiphyte that grows on trees and rocks. It grows into huge colonies that can weigh several hundred kilograms, and is recorded as the heaviest orchid in the world. The pseudobulbs are very long and cylindrical, yellowish in color, and develop nodes as they age, reaching a maximum length of 3 m. The leaves are long and linear. From summer to fall, it produces very long inflorescences, each with 30 to 50 flowers that bloom one after another. The flowers are tiger-striped, with a yellow base and reddish-brown spots. The specific epithet is named after Gustav Wallis (1830-1878), a German botanist who collected plants in the 19th century.
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