Pineapple orchid

Description

Dendrobium densiflorum is a species of epiphytic or lithophytic orchid, native to Asia. It has club-shaped stems, three or four leathery leaves and densely flowered, hanging bunches of relatively large pale yellow and golden yellow flowers. Dendrobium densiflorum is an epiphytic or lithophytic orchid with stems that are club-shaped, swollen at the base, 250–400 mm (10–20 in) long and about 20 mm (0.8 in) wide. There are three or four leathery, oblong to lance-shaped leaves 80–170 mm (3–7 in) long and 26–40 mm (1–2 in) wide near the end of the stem. A large number of flowers are densely packed around a hanging flowering stem 60–160 mm (2–6 in) long. Each flower has a greenish white pedicel and ovary 20–25 mm (0.8–1 in) long. The flowers are 30–40 mm (1–2 in) wide with pale yellow sepals and petals and a golden yellow labellum. The sepals are lance-shaped to egg-shaped, 17–21 mm (0.7–0.8 in) long and 8–12 mm (0.3–0.5 in) wide. The petals are almost round, 15–20 mm (0.6–0.8 in) long and 11–15 mm (0.4–0.6 in) wide with irregular edges on the outer half. The labellum is more or less square to round, 17–22 mm (0.7–0.9 in) long and wide with a partly woolly surface. The edges of the labellum surround the column. Mi hua shi hu grows in the trunks of broadleaved, evergreen trees and on rocks in mountain valleys at elevations between 400 and 1,000 m (1,000 and 3,000 ft). It is found in China, Bhutan, northeastern India, Myanmar, Nepal and Thailand. Dendrobium guibertii and D. amabile are similar species and sometimes confused with D. densiflorum, leading to uncertainty as to the distribution of this species Dendrobium is a genus of mostly epiphytic and lithophytic orchids in the family Orchidaceae. It is a very large genus, containing more than 1,800 species that are found in diverse habitats throughout much of south, east and southeast Asia, including China, Japan, India, the Philippines, Indonesia, Australia, New Guinea, Vietnam and many of the islands of the Pacific. Orchids in this genus have roots that creep over the surface of trees or rocks, rarely having their roots in soil. Up to six leaves develop in a tuft at the tip of a shoot and from one to a large number of flowers are arranged along an unbranched flowering stem. Several attempts have been made to separate Dendrobium into smaller genera, but most have not been accepted by the World Checklist of Selected Plant Families.