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Selenicereus undatus, the white-fleshed pitahaya, is a species of the genus Selenicereus (formerly Hylocereus) in the family Cactaceae [1] and is the most cultivated species in the genus. It is used both as an ornamental vine and as a fruit crop – the pitahaya or dragon fruit. [3]
Fresh ripe dragon fruit in Vietnam. Sweet pitayas come in three types, all with leathery, slightly leafy skin: [3]: 215–216 Selenicereus undatus (Pitaya blanca or white-fleshed pitaya, also known as Hylocereus undatus) has pink-skinned fruit with white flesh. This is the most commonly seen "dragon fruit".
Stems green, slender without horny margins. Flowers 30–38 cm long with large flattened tubercles and small bracts. Fruit yellow. Colombia, Ecuador and Peru [17] Selenicereus minutiflorus (Britton & Rose) D.R.Hunt: Stems green. Flowers with rigid spines at base of flower, 5 cm long, 8–9 cm wide, white. Belize, Guatemala and Honduras [18]
The species is grown commercially for its yellow fruit, but is also an impressive ornamental climbing vine with perhaps the largest flowers of all cacti. The yellow skinned fruit of S. megalanthus has thorns, unlike the green, red or yellow skinned dragon fruits of S. undatus, S. monacanthus and their cultivated hybrids.
Regardless of genus or species, night-blooming cereus flowers are almost always white or very pale shades of other colors, often large and frequently fragrant. Most of the flowers open after nightfall, and by dawn, most are wilting. Plants in the same geographical area tend to bloom on the same night.
The flowers are nocturnal. They grow on flattened stems and are up to 30 cm (12 in) long and 17 cm (7 in) wide, and very fragrant. The principal odor components in the aroma are benzyl salicylate and methyl linoleate. [6] Pericarpels are nude, slightly angled, and green. Bracteoles are short and narrow up through ca. 10 millimetres (0.39 in ...
The fruit of Diphylleia grayi. The plant grows up to 0.4 m (1.3 ft). The flowers are white, pedicellate, with six obovate petals and bloom from May to July. [3] After it flowers, it bears dark blue/purple fruit with a white powdery coating from June to August. [4] Its stems are terete and grow 30–60 cm (12–24 in) long.
Caryophyllaceae, commonly called the pink family or carnation family, is a family of flowering plants. It is included in the dicotyledon order Caryophyllales in the APG III system, alongside 33 other families, including Amaranthaceae, Cactaceae, and Polygonaceae. [1] It is a large family, with 81 genera and about 2,625 known species. [3]