three-cornered jack

Alternative forms

 * ,, Devils thorns, doublegee,

Noun

 * 1)  The weed.
 * 2) * 1901, South Australian Department of Agriculture, South Australian Department of Industry, Journal of Agriculture and Industry of South Australia, Volume 4, |%22three-cornered+jacks%22+-intitle:%22%22+-inauthor:%22%22&dq=%22three-cornered+jack%22|%22three-cornered+jacks%22+-intitle:%22%22+-inauthor:%22%22&source=bl&ots=MxHTV8r4so&sig=BZdt9Ldav_adF7CEGcyE170zoCw&hl=en&sa=X&ei=gpWCUIq2Bcm4iAeLgoGgDw&redir_esc=y page 385,
 * The “Three-cornered jack/Devils thorn” is believed to be poisonous to them, as many dead locusts are found near to each plant.
 * 1) A seed vessel of this plant, which has three symmetrically arranged thorns and a pointed head.
 * 1) A seed vessel of this plant, which has three symmetrically arranged thorns and a pointed head.
 * 1) A seed vessel of this plant, which has three symmetrically arranged thorns and a pointed head.
 * 1) A seed vessel of this plant, which has three symmetrically arranged thorns and a pointed head.