Online Encyclopedia

SUNFLOWER

Online Encyclopedia
Originally appearing in Volume V26, Page 103 of the 1911 Encyclopedia Britannica.
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SUNFLOWER  . The

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common sunflower, known botanically as Helianthus annuus, a member of the natural order
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Compositae, is a native of the western
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United States . It is an
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annual herb with a rough hairy stem 3 to 12 ft. high, broad coarsely toothed rough leaves 3• to 12 in, long, and heads of flowers 3 to 6 in. wide in wild specimens and often a
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foot or more in cultivated . Double forms are in cultivation, one (globosus fistulosus) having very large globular heads . The plant is valuable from an economic as well as from an ornamental point of view . The leaves are used as
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fodder, the flowers yield a yellow dye, and the seeds contain oil and are used for food . It is cultivated in Russia and other parts of
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Europe, in
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Egypt and India and in several parts of England hundreds of
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plants are grown on sewage farms for the seeds . The yellow sweet oil obtained by
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compression from the seeds is considered equal to olive or almond oil for table use . Sunflower oilcake is used for stock and poultry feeding; and largely exported by Russia to Denmark, Sweden and elsewhere . The genus Helianthus contains about fifty
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species, chiefly natives of North
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America, a few being found in Peru and Chile . They are tall, hardy annual or perennial herbs, several of which are well known in gardens where they are of easy cultivation in moderately good
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soil . H. decapetalus is a perennial about 5 ft. high with solitary heads about 2 in. across in slender twiggy branchlets; H. mulliftorus is a beautiful species with several handsome double varieties; H. orygalis is a graceful perennial 6 to to ft. high, with drooping willow-like leaves and numerous comparativelysmall yellow flower-heads .

H. atrorubens, better known as Harpaliuin rigidum, is a smaller plant, 2 to 3 ft. high, the flower heads of which have a dark red or

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purple disk and yellow rays . There are many
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fine forms of this now, some of which grow 6 to 9 ft. high and have much larger and finer flowers than the type . Other fine species are H. giganteus, to to 12 ft.; H. laetiflorus, 6 to 8 ft., and H. mollis, 3 to 5 ft . H. tuberoses is the Jerusalem
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artichoke . Since the word " sunflower," or something corresponding to it, existed in
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English literature before the introduction of Helianthus annuus, or, at any
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rate, before its general diffusion in English gardens, it is obvious that some other flower must have been intended . The
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marigold (Calendula officinalis) is considered by Dr Prior to have been the plant intended by Ovid (Met. iv . 269–270) " . Ilia suum, quai,mvis radice tenetur, Vertitur ad solem; mutataque servat amorem " and likewise the solsaece of the Anglo-Saxon, a word
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equivalent to solsequium (sun-following) . But this
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movement with the sun is more imaginary than real, the better explanation for the application of the name to a flower being afforded by the re-semblance to " the radiant beams of the sun," as Gerard expresses it . The rock-rose (Helianthemum vulgare) was also termed sunflower in some of the herbals from its flowers opening only in the
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sunshine . Actinella grandiflora, a
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pretty perennial 6 to 9 in. high, from the
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Colorado mountains, is known as the Pigmy sunflower .

End of Article: SUNFLOWER
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