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The onion plant (Allium cepa), also known as the bulb onion [2] or common onion, [3] is the most widely cultivated species of the genus Allium. [4] [5] It was first officially described by Carl Linnaeus in his 1753 work Species Plantarum. [6] Synonyms during its taxonomic history are: [7] [8] Allium cepa var. aggregatum – G. Don
Because onions can take more than 5–6 months to reach maturity, many growers with shorter growing windows prefer to grow onions from starter bulbs rather than seed. Onion seeds are cultivated in the spring and the resultant bulbs are harvested in autumn. These bulbs are similar in appearance to the mature onion, but much smaller in size. The ...
Scallions (also known as green onions and spring onions) are edible vegetables of various species in the genus Allium. Scallions generally have a milder taste than most onions . Their close relatives include garlic , shallots , leeks , chives , [ 1 ] and Chinese onions . [ 2 ]
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O. umbellatum is a perennial herbaceous bulbous plant , dying back after flowering, to an underground storage bulb. The following year, it regrows from the often shallow rooted bulbs, which are ovoid with a membranous coat, [2] 15–25 millimetres (1 ⁄ 2 –1 inch) long and 18–32 mm (3 ⁄ 4 – 1 + 1 ⁄ 4 in) in diameter.
Bolting begins; in 10% of the plants leaves bent over 3. 70% of the expected shaft length and diameter reached 4. 48: 408: Leaves bent over in 50% of plants 3: 49: 409: Leaves dead, bulb top dry; dormancy 3. Growth complete; length and stem diameter typical for variety reached 4. 5: Inflorescence emergence 51: 501: Onion bulb begins to elongate ...
Allium hyalinum, the glassy onion, grows from a cluster of bulbs, with each bulb sending up a tall stem. [5] Atop each stem is an inflorescence of up to 25, but usually fewer, white or pink-tinted white flowers. The flowers have six shiny tepals which become transparent as they age. [5] formerly included [3]