The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



(in Russian, Gorchak). (1) A genus of perennial herbaceous plants of the Compositae family. The stem is heavily branched. The leaves are mostly lanceolate. The blossoms are pink and tubular and are gathered into small calathidia that form a branchy inflorescence. The genus includes two Eurasian species. The best known is A, repens, which is found in the south of European USSR, in the Caucasus, in the south of Western Siberia, and from Asia Minor to Mongolia. It grows on steppes and slopes and also on fallows, along roads, and near dwellings. It is a perennial, soboliferous, quarantine weed. The stem is 30–60 cm high; the leaves are sessile lanceolate; the blossoms are small and are gathered into single calathidia at the tips of the stems; the fruit is an achene with a slightly drooping pappus. The root system is vigorous and consists of a main taproot that extends to a depth of 6 m or more, lateral roots, and vertical rhizomes. Acroptilon reproduces mainly by root suckers. It is drought-resistant and salt-tolerant. It is toxic to sheep, horses, and camels. It contaminates all young crops, especially cotton. Late-planted crops suffer especially. Control measures include quarantine, uprooting the subterranean portions of the plant with deep plowing and repeated cultivation, and the use of herbicides. Another Acroptilon, A. australes, is common in Middle Asia. Closely related to Acroptilon is Phalacrachena inuloides, which contaminates flooded lands in the Southern Ukraine, the Northern Caucasus, and the Volga regions in the springtime.

(2) Sometimes species of the genus Picris, also of the Compositae family, are called Acroptilon.


Kott, S. A. Karantinnye sornye rasteniia i bor’ba s nimi, 2nd ed. Moscow, 1953.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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Bieb > Centaurea iberica Trev.ex Spreng > Acroptilon repens (L.) Hidalgo > Conyza bonarensis (L.) Cronquist, respectively.
narrow-leaf milkweed Asteraceae Sunflower Family Acroptilon repens (L.) DC.
Collectively, dominant plant species of Peafowl habitat in the park included Saccharum bengalensis, Dalbergia sissoo, Adhatoda zeylanica, Lantana camara, Triticum aestivum, Parthenium hysterophorus, Cynodon dactylon, Ficus bengalensis, Dodonaea viscosa, Desmostachya bipinnata, Ageratum houstonianum, Heteropogan contortus, Butea monosperma, Opuntia dillenii, Mangifera indica, Brachiaria reptans, Sorghum halepense, Gymnosporia royleana, Aerva persica, Acroptilon repens, Imperata cylindrica, Acacia nilotica, Acacia modesta and Ziziphus mauritiana (Fig.
Phytotoxic polyacetylene (103) was isolated from roots of Russian knapweed (Acroptilon repens, Asteraceae).
Common name Scientific name Class Life cycle * Downy brome Bromus tectorum Grass WA London rocket Sisymbrium irio Broadleaf WA Creeping thistle Circium arvense Broadleaf CP Yellow goats-beard Tragopogon dubius Grass SP Field bindweed Convolvulus arvensis Broadleaf CP Bermudagrass Cynodon dactylon Grass CP Foxtail barely Hordeum jubatum Grass SA Dandelion Taraxacum officinale Broadleaf SP Quackgrass Agropyron repence Grass CP Russian knapweed Acroptilon repens Broadleaf CP lambsquarters Chenopodium album Broadleaf SA Plantain Plantago spp.
Uroleucon compositae (Theobald) on Carthamus tinctorius, Isfahan, 2 December 2003; Uroleucon erigeronensis (Thomas) on Conyza canadensis, Rasht, 15 September 2005; Uroleucon jaceae (L.) on Acroptilon repens, Isfahan, 17 April 2003; 27 December 2004; on Centaurea depressa, Isfahan-Lavarg, 27 December 2004.
A set of loci in two native grasses have changed in populations invaded by Acroptilon repens (Mealor and Hild 2006) and the degree of change was related to resistance (Mealor and Hild 2007).
lobata Leafy spurge Euphorbia esula Invasive and noxious Mile-a-minute weed Polygonum perfoliatum Invasive Multiflora rose Rosa multiflora Invasive Musk thistle, Carduus nutans Invasive and nodding thistle noxious Purple loosestrife Lythrum salicaria Noxious Quackgrass Agropyron repens Noxious Russian knapweed Acroptilon repens Invasive Russian olive Elaeagnus angustifolia Invasive Saltcedar Tamarix spp.
Whereas pattern of concentration of these anti-nutritional/ insect repellant/ biochemical deterrent attributes for remaining six plant species were Carthamus oxicantha > Centaurea iberica > Echinops griffithiamus > Conyza bonarensis > Acroptilon repens > Achillea welhemsii.
Types of weed in farms are: Chenopodium album, Amaranthus retroflexus, Portulaca oleraceae,Convolvulus arvensis, Echinochloa crus-gali, Kochia sp ,Solanum nigrum, Cichorium intybus, Acroptilon repens and etc.