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A Phalaenopsis flower. Orchids are easily distinguished from other plants, as they share some very evident derived characteristics or synapomorphies.Among these are: bilateral symmetry of the flower (zygomorphism), many resupinate flowers, a nearly always highly modified petal (labellum), fused stamens and carpels, and extremely small seeds.
Phalaenopsis (/ ˌ f æ l ɪ ˈ n ɒ p s ɪ s /), also known as moth orchids, [2] is a genus of about seventy species of plants in the family Orchidaceae.Orchids in this genus are monopodial epiphytes or lithophytes with long, coarse roots, short, leafy stems and long-lasting, flat flowers arranged in a flowering stem that often branches near the end.
The subfamily Orchidoideae and the previously recognized subfamily Spiranthoideae are considered the closest allies in the natural group of the monandrous orchids because of several generally shared characters: a shared terrestrial habit; sectile (capable of being severed) or granular pollinia; erect anthers.
Dendrobium nobile is a sympodial orchid that forms pseudobulbs. When the mother plant's life cycle ends, it produces offsets, continuing the plant's life. The new plant then repeats this cycle. Its inflorescence is erect, with blooms forming along the length of the flowering stem.
Orchideae is a tribe of orchids in the subfamily Orchidoideae.Historically, it was divided into 2 subtribes, Orchidinae and Habenariinae. The subtribe Orchidinae alone contains about 1,800 species. [1]
3. Encyclia Orchids. Upon first glance, this flower resembles an octopus thanks to its dangling petals and sepals. Besides their unique and aquatic-like appearance, their leaves are also statement ...
The leaves of D. viridis are 5–14 cm long and 2–7 cm wide; leaves at the base of the orchid are obovate to elliptical, while leaves higher on the stem become lanceolate. Two to six leaves are found on one plant, and leafing is alternate. The inflorescence of the orchid is a dense raceme (spike-like cluster) containing 7 to 70 small flowers ...
It reflects the considerable progress in orchid taxonomy that had been made since Dressler published his classification in 1993. In the 1990s, orchid taxonomy began to be influenced by molecular phylogenetics based on DNA sequences. The first molecular phylogenetic study to include a substantial sample of orchids was published in 1999. [12]