Western Australia, Weed, European doublegee, Emex spinosa
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A specimen of the European doublegee was forwarded to the Government Botanist this year by Mr. G. L. Throssell, Agricultural Adviser at Geraldton, who obtained it from a property at Mendel.
The plant differs from the common doublegee principally in the broad base of the fruit and the strongly recurved spines, the ordinary common doublegee having a fruit which tapers at the base and carries straight spines.
"A new weed menace - the european doublegee,"
Journal of the Department of Agriculture, Western Australia, Series 3: Vol. 2
, Article 5.
Available at: https://researchlibrary.agric.wa.gov.au/journal_agriculture3/vol2/iss6/5