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vicia faba
''Vicia faba'', also known as the broad bean, fava bean, faba bean, field bean, bell bean, or tic bean, is a species of flowering plant in the pea and bean family Fabaceae. It is native to North Africa southwest and south Asia, and extensively cultivated elsewhere. A variety ''Vicia faba'' var. ''equina'' Pers. – horse bean has been previously recognized.
==Description==
It is a stiffly erect plant 0.5–1.8 m tall, with stout stems of a square cross-section. The leaves are 10–25 cm long, pinnate with 2–7 leaflets, and of a distinct glaucous grey-green color. Unlike most other vetches, the leaves do not have tendrils for climbing over other vegetation. The flowers are 1–2.5 cm long, with five petals, the standard petal white, the wing petals white with a black spot (true black, not deep purple or blue as is the case in many "black" colorings,) and the keel petals are white. Crimson-flowered broad beans also exist, which were recently saved from extinction.
The flowers have a strong and sweet scent which is attractive to bees and other pollinators.〔(NSW Agriculture 2002 - Honeybees in faba bean pollination )〕
The fruit is a broad, leathery pod, green maturing to blackish-brown, with a densely downy surface; in the wild species, the pods are 5–10 cm long and 1 cm diameter, but many modern cultivars developed for food use have pods 15–25 cm long and 2–3 cm thick. Each pod contains 3–8 seeds, round to oval and 5–10 mm diameter in the wild plant, usually flattened and up to 20–25 mm long, 15 mm broad and 5–10 mm thick in food cultivars. ''Vicia faba'' has a diploid (2n) chromosome number of 12 (six homologous pairs). Five pairs are acrocentric chromosomes and one pair is metacentric.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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