Cooke, Julia; Groves, R.H.; Ash, Julian
Carrichtera annua (L.) DC. (Brassicaceae) or Ward's Weed, a major weed of semi-arid rangelands of southern Australia, has been collected widely since its introduction early in the 20th century. Collated records were used to suggest a single site of accidental introduction in South Australia, evidence of a lag phase of ∼30 years (probably due to edaphic restrictions) before rapid spread, involving infrequent long-distance human-aided dispersal across southern Australia and a relatively stable...[Show more]
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