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Broussonetia papyrifera (paper mulberry)
B. papyrifera is a highly invasive species, becoming weedy and difficult to remove after its introduction. Its timber does not have high commercial...
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Bromus diandrus (great brome)
In Australia, B. diandrus competes strongly with wheat. A density of 100 plants/m² of B. diandrus decreases wheat yield by 30% (Cooper and...
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Bromus madritensis (compact brome)
Bromus species are contaminants of grain and wool, they damage animal hides and can host serious cereal diseases. In pastures, the seeds penetrate...
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Bromus rigidus (ripgut brome)
B. rigidus is directly causing serious problems in cereal crops, with yield losses varying from 40 to 80% in Algeria and Morocco (Hamal, 1993). In...
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Bromus rubens (red brome)
In areas with low herbaceous competition, B. rubens can be invasive and, once established, competitive with other grasses. The awns and florets are...
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Bromus sterilis (barren brome)
B. sterilis is a serious weed problem of autumn-sown cereals (Mortimer et al., 1993). In Morocco, five species of Bromus (B. rigidus, B. rubens, B....
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Brassica juncea var. juncea (Indian mustard)
Erect annual to biennial herb, 30-160 cm tall, normally unbranched, sometimes with long ascending branches in upper part, subglabrous, subglaucous....
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Brassica oleracea (cabbages, cauliflowers)
Very polymorphous, annual or biennial, erect herb, up to 1.5 m tall, glabrous, often much branched in upper part. Stem usually subterete, sometimes...
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Brassica oleracea var. botrytis (cauliflower)
B. oleracea Group Botrytis has nine chromosomes and can cross with other Groups or botanical varieties of B. oleraceae. As young seedlings,...
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Brevicoryne brassicae (cabbage aphid)
Crops which can suffer severe attack by B. brassicae include cabbage, cauliflower, broccoli, radish, swede and mustard. Kale, oilseed rape and...
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