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Zanthoxylum clava-herculis L., Hercules' Club
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Image Gallery
Zanthoxylum clava-herculis, Hercules Club, bark
Zanthoxylum clava-herculis, Hercules Club, knobs
Zanthoxylum clava-herculis, Hercules Club, thorny knobs
Zanthoxylum clava-herculis, Hercules Club, knobs
Zanthoxylum clava-herculis, Hercules Club, bark protrusions
Zanthoxylum clava-herculis, Hercules Club, with spikey knobs
Zanthoxylum clava-herculis, Hercules Club, trunk
Zanthoxylum clava-herculis, Hercules Club, young trunk
Zanthoxylum clava-herculis, Hercules Club, trunk
Zanthoxylum clava-herculis, Hercules Club, trunk
Zanthoxylum clava-herculis, Hercules Club
Eastern native trees
Zanthoxylum clava-herculis has
distinct bark, which is covered with
thick knobby to spiked protrusions or
teeth.
Van Zandt Co., Texas
2012 TreesForMe Original Image.  
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Home>Families>Rue, Rutaceae>Hercules' Club,
Zanthoxylum clava-herculis>Hercules' Club Image Gallery

A younger Hercules Club trunk with
sharp thorny growths is well defended
against animal predation.
Tarrant Co., Texas
2012 TreesForMe Original Image.  
See usage requirements.
Where there aren't teeth, Zanthoxylum
clava-herculis bark is rough and ashy
brown to orange brown.
Van Zandt Co., Texas
2012 TreesForMe Original Image.  
See usage requirements.
The knobs may stick out as far as 1 to 1.5 inches and may grow in what look like vertical ridges (left) or like a single tooth (center and right).
They may be flattened on top (right), rounded on top (center) or spiked (right) or a combination of all three on the same tree.  This gruesome
appearance has earned this species the name Hercules club, but it is for the bark's ability to cause numbing of the mouth when chewed that
gave rise to the moniker of tooth ache tree.
Tarrant Co., Van Zandt Co., Texas
2012 TreesForMe Original Image.  
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Zanthoxylum clava-herculis is a deciduous
tree found from the Atlantic shores of North
Carolina west to Texas and Oklahoma and
south throughout the Gulf states.
Van Zandt Co., Texas
2012 TreesForMe Original Image.  
See usage requirements.
Young Hercules club tree trunks have
small teeth beginning to grow at the
trunk base.
Van Zandt Co., Texas
2012 TreesForMe Original Image.  
See usage requirements.
Zanthoxylum clava-herculis is a member of
the prickly ash genus, which is in the Rue
family.
Van Zandt Co., Texas
2012 TreesForMe Original Image.  
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Zanthoxylum clava-herculis, Hercules Club
Van Zandt Co., Texas
2012 TreesForMe Original Image.  
See usage requirements.
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A younger Hercules Club trunk with knobs
going all the way up the trunk into the canopy.
Tarrant Co., Texas
2012 TreesForMe Original Image.  
See usage requirements.