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Solanum elaeagnifolium (silverleaf nightshade)
S. elaeagnifolium competes for moisture and plant nutrients with a variety of crops under both dryland and irrigated conditions. Marginal, dryland...
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Solanum torvum (turkey berry)
S. torvum is an invasive weed of pastures, roadsides and open native vegetation, and is occasionally found in cassava and other perennial crops in...
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Solidago gigantea (giant goldenrod)
S. gigantea has spread in a number of European countries after introduction as an ornamental plant from its native North America. It continues to...
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Sonchus arvensis (perennial sowthistle)
According to Holm et al. (1997) S. arvensis is reported as a weed in 59 countries, and is most often mentioned as a serious weed in cereal crops....
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Stellaria media (common chickweed)
S. media was considered by Allard (1965) to be one of the 12 most successful colonizing species among non-cultivated plants, and has been reported...
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Striga densiflora (witchweed)
Most cereal crops, and sugarcane, can be affected by S. densiflora. There are no estimates of crop loss, but in India it is regarded as no less a...
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Tamarix aphylla (athel)
T. aphylla can produce numerous seeds that can be spread over a wide area by wind and water. The relatively low rate of T. aphylla invasion in...
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Tamarix canariensis (Canary Island tamarisk)
Most morphological features are similar to those of T. ramosissima but T. canariensis differs from that species and from T. chinensis in the...
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Tamarix chinensis (five-stamen tamarisk)
This species is fast growing and adapted to extreme environments, with high seed dispersal and vegetative reproduction capacity. Through depletion...
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Tamarix gallica (French tamarisk)
Most morphological features are similar to those of T. ramosissima but T. gallica differs from that species and from T. chinensis in the insertion...
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