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They are mostly white, but a few are yellow, green or ochre. They all have a long spur at the back of the labellum (lip). In the case of Angraecum sesquipedale , a species from Madagascar, on observing the 30 centimetres (12 in) spur in the lip, Charles Darwin made the hypothesis that, since the nectar was at the bottom of the spur, a ...
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 racemes of flowers emerge from the center of the years new growth before it is mature, during spring and early summer. The flowers vary in color from white to purple, and all species have four pollinia. The tubers resemble a horn or claw. They are grayish-white or yellowish-white in appearance, with concentric rings and brown rootlets.
They are unusual in that in some years they appear in great numbers, then sometimes only reappear after an absence of many years. The genus Ophrys is the most species-rich (i.e. diverse) genus of orchids in Europe and the Mediterranean with over 200 species, according to Orchids of Britain and Europe by Pierre Delforge.
Drakaea is a genus of 10 species in the plant family Orchidaceae commonly known as hammer orchids. All ten species occur only in the south-west of Western Australia . Hammer orchids are characterised by an insectoid labellum that is attached to a narrow, hinged stem, which holds it aloft.
Phalaenopsis amabilis is an epiphytic, rarely lithophytic herb with coarse, flattened, branching roots up to 1 metre (3.3 ft) long and usually 3–4 millimetres (0.12–0.16 in) wide. Between two and eight fleshy, dark green, oblong to egg-shaped leaves 150–300 millimetres (5.9–12 in) long and 40–70 millimetres (1.6–2.8 in) wide are ...
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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.