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logania (lōgāˈnēə), common name for the Loganiaceae, a family of herbs, shrubs, and trees of warmer climates, including many woody climbing species. Some plants of this family are grown in the United States as ornamentals, and several are sources of medicines and poisons. The former include introduced species of Logania (native to New Zealand and Australia) and several species of buddleia, or butterfly bush (genus Buddleia, sometimes considered a separate family). Two species of buddleia are native to Arizona and California. Carolina yellow jessamine, or jasmine (Gelsemium sempervirens), also called false jasmine, is the state flower of South Carolina. It is often grown as a porch vine in the South, and its dried roots were used medicinally as an antispasmodic and sedative. The strong poison strychnine, which also affects the central nervous system, comes from the seeds of several Strychnos species (nux-vomica native to S Asia, is the commercial source). Several tropical American species are ingredients of curare arrow poisons, which have yielded important medicines. Logania is classified in the division Magnoliophyta, class Magnoliopsida, order Gentianales.
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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a genus of plants of the family Buddleiaceae (formerly assigned to the family Loganiaceae). They consist of shrubs or small trees, sometimes herbs. Blossoms are usually small, numerous, variously colored, and gathered into large inflorescences. There are approximately 100 species distributed in tropical and temperate regions of America, Asia, and South Africa. Some species of Buddleia have been cultivated as ornamentals. David’s buddleia (B. davidii, B. variabilis) is a small tree with fragrant blossoms; it originated in China and has many garden forms. Other species can also be cultivated in gardens of the southern USSR. Buddleia grows rapidly; some plants begin to blossom at two or three years of age.


Derev’ia i kustarniki SSSR, vol. 6. Moscow-Leningrad, 1962.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


any ornamental shrub of the genus Buddleia, esp B. davidii, which has long spikes of mauve flowers and is frequently visited by butterflies: family Buddleiaceae
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
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Beautiful buddleia, left, but Japanese knotweed, above, divides can cause damage to property and other plants if left unchecked
There are numerous varieties, cultivars and hybrids meaning that there is a buddleia suitable for every garden - even a balcony.
Buddleia davidii White Profusion Has beautiful white flowers or the clear blue of blue horizon and rich hue of a black knight.
Most Buddleias produce flowers irresistible to butterflies on the current season's growth with the notable exception of Buddleia alternifolia, its trailing shoots wreathed in clusters of lilac-purple blooms a waterfall of soft purple.
Peer over any garden wall in late summer and the chances are you'll see the purple spikes of buddleia in bloom, with butterflies showing a keen interest in the flowers' nectar.
Lack of water will prevent buddleias from producing nectar for butterflies and bees.
GOOD BUDDIES: A Painted Lady on a buddleia; HIGH FLYER: Tortoiseshell on a sedum
IF you want to attract butterflies and enjoy the looks of a truly beautiful shrub then try a buddleia - the butterfly bush.
The RSPB list Buddleia davidii as an invasive weed and warn against it, as it sets seeds so readily - even in the most hostile of places like guttering and chimneys as you will no doubt have seen.
Buddleia Walk down any street in late summer and you are likely to see a buddleia, or butterfly bush, with coneshaped flowers in purple, magenta and white.
Q I WANT to plant a small tree or a shrub such as a buddleia next to my lawn, but it needs to be hardy as I live 700ft above sea level.
Buddleia davidii is a quick-growing shrub that flowers on current year's growth so it is pruned hard -- to within a foot or so of the ground -- in late March or April for the best flowers.