three-cornered jack USDA PLANTS SYMBOL: EMAU
Emex australis Steinhall
Synonym(s): Devil's thorn, Prickly jack, Double gee, Spiny emex, Cathead, southern threecornerjack

Identification, Biology, Control and Management Resources

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Fruit(s); Fruits with persistent perianth. FNW taxon.
Julia Scher, USDA APHIS PPQ,
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