Difference between revisions of "Dizygotheca"
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Dizygotheca (Greek, in allusion to the anthers having double the usual number of cells). Araliaceae. Graceful hothouse plants, grown practically exclusively for foliage; usually known as Aralia. | Dizygotheca (Greek, in allusion to the anthers having double the usual number of cells). Araliaceae. Graceful hothouse plants, grown practically exclusively for foliage; usually known as Aralia. | ||
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The names here used are retained in the absence of specific information as to what wild species of Dizygotheca they are to be associated with. Only complete flowering material can settle this much-vexed question. All of the following are distinct horticulturally. | The names here used are retained in the absence of specific information as to what wild species of Dizygotheca they are to be associated with. Only complete flowering material can settle this much-vexed question. All of the following are distinct horticulturally. | ||
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==Species== | ==Species== | ||
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| + | The following greenhouse aralias, with showy lvs., probably belong to Dizygotheca, unless otherwise noted: | ||
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| + | A. Chabrieri, Hort. See Polyscias. — D. craissifolia, Soland. See Pseudopanax. — D. longipes, Hort. Lvs. digitate, the lfts. oblong-lanceolate, acuminate, wavy- N. Austral. — D. nobilis, Hort. "A theophrasta-like plant, with closely packed, bold foliage, the Iva. oblong obovate-acuminate, undulate at the margins." Not certainly referable to Dizygotheca. — D. Osyana, Hort. Like A. leptophylla, but lfts. deeply bifid, and nerves and veins brown. S. Sea Isls. — D. quercifolia, Hort. Lfts. 3, sinuate: lvs. opposite. New Britain. Perhaps not of the Araliaceae. The plant has opposite lvs. — D. rotunda, Hort. Lf. of a single orbicular-cordate lft. or sometimes 3-foliolate, white-toothed. Polynesia. Not certainly referable to Dizygotheca. — D. spectabilis, Hort.=? — D. splendidissima, Hort. Lvs. pinnate, the lfts. shiny green. New Caledonia— Polyscias. — D. ternata, Hort. Lvs. opposite, ternate, or 3-lobed, the lfts. oblong-lanceolate and sinuate. Not certainly referable to Dizygotheca. — D. Victoriae, Hort.=Polyscias. | ||
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==Gallery== | ==Gallery== | ||
Latest revision as of 21:03, 15 September 2009
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Read about Dizygotheca in the Standard Cyclopedia of Horticulture
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Dizygotheca (Greek, in allusion to the anthers having double the usual number of cells). Araliaceae. Graceful hothouse plants, grown practically exclusively for foliage; usually known as Aralia. Usually shrubs, sometimes small trees, entirely unarmed, and differing in this from some hardy aralias: lvs. always digitate, of 5-9 lfts., varying much in adult and juvenile characters, sometimes slender and threadlike, again broad and leathery, usually long-stalked: calyx and corolla 5-parted; stamens 5, with thick anthers; ovary 10-celled; styles 10. All these fl.-characters are drawn from wild plants, as the cult. specimens are not known to flower.—Only 3 or 4 species are known in the wild state, all from the tropical isls. of the Pacific. The many names in horticultural literature are probably referable, ultimately, to some of these species, but their true position will be settled only when they flower. Here must be sought all the digitate-lvd. tender aralias of the first edition of this cyclopedia, the pinnate-lvd. species going to Polyscias. R.H. 1912, p. 491. Dizygothecas require light rich soil, made up of equal parts of sandy loam and peat or leaf-mold. They require plenty of water and a moist warm atmosphere. Scale pests are numerous and must be kept down by frequent sponging with weak solutions of whale-oil soap, fir-tree oil or other insecticide. The names here used are retained in the absence of specific information as to what wild species of Dizygotheca they are to be associated with. Only complete flowering material can settle this much-vexed question. All of the following are distinct horticulturally. CH
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Cultivation
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Propagation
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Pests and diseases
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Species
Read about Dizygotheca in the Standard Cyclopedia of Horticulture
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{{{1}}} The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text. |
Gallery
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photo 1
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References
- Standard Cyclopedia of Horticulture, by L. H. Bailey, MacMillan Co., 1963
External links
- w:Dizygotheca. Some of the material on this page may be from Wikipedia, under the Creative Commons license.
- Dizygotheca QR Code (Size 50, 100, 200, 500)
