University of Arkansas Division of Agriculture Cooperative Extension Service
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Weed Identification

Spiny

Weed Scientific Name Photo
Black Locust Robinia pseudoacacia Black Locust [<em>Robinia pseudoacacia</em>]
Blackberry Rubus Blackberry [<em>Rubus </em>]
Buffalo Bur Solanum rostratum Buffalo Bur [<em>Solanum rostratum</em>]
Bull Thistle Cirsium vulgare Bull Thistle [<em>Cirsium vulgare</em>]
Carrion Flower Smilax pulverulenta Carrion Flower [<em>Smilax pulverulenta</em>]
Catclaw Sensitive Brier Mimosa quadrivalvis Catclaw Sensitive Brier [<em>Mimosa quadrivalvis</em>]
Dewberry Rubus trivialis Dewberry [<em>Rubus trivialis</em>]
Field Thistle Cirsium discolor Field Thistle [<em>Cirsium discolor</em>]
Greenbrier Smilax rotundifolia Greenbrier [<em>Smilax rotundifolia</em>]
Greenbrier Smilax hispida Greenbrier [<em>Smilax hispida</em>]
Greenbrier Smilax bona-knox Greenbrier [<em>Smilax bona-knox</em>]
Hawthorn Crataegus spp. Hawthorn [<em>Crataegus spp.</em>]
Hercules' Club Aralia spinosa Hercules' Club [<em>Aralia spinosa</em>]
Honeylocust Gleditsia triacanthos Honeylocust [<em>Gleditsia triacanthos</em>]
Horsenettle Solanum carolinense Horsenettle [<em>Solanum carolinense</em>]
Lawn Burweed Soliva sessilis Lawn Burweed [<em>Soliva sessilis</em>]
Milk Thistle Silybum marianum Milk Thistle [<em>Silybum marianum</em>]
Musk Thistle Carduus nutans Musk Thistle [<em>Carduus nutans</em>]
Noseburn Tragia ramosa Noseburn [<em>Tragia ramosa</em>]
Osage Orange Maclura pomifera Osage Orange [<em>Maclura pomifera</em>]
Pasture Rose Rosa carolina Pasture Rose [<em>Rosa carolina</em>]
Prickly Lettuce Lactuca serriola Prickly Lettuce [<em>Lactuca serriola</em>]
Pricklypear Cactus Opuntia humifusa Pricklypear Cactus [<em>Opuntia humifusa</em>]
PunctureVines Tribulus terrestris PunctureVines [<em>Tribulus terrestris</em>]
Sandbur Cenchrus longispinus Sandbur [<em>Cenchrus longispinus</em>]
Sivlerleaf Nightshade Solanum eleagnifolium Sivlerleaf Nightshade [<em>Solanum eleagnifolium</em>]
Texas Bullnettle Cnidosculus texanus Texas Bullnettle [<em>Cnidosculus texanus</em>]
Trifoliate Orange Poncirus trifoliata Trifoliate Orange [<em>Poncirus trifoliata</em>]
Waterpod Hydrolea ovata Waterpod [<em>Hydrolea ovata</em>]
Yellow Thistle Cirsium horridulum Yellow Thistle [<em>Cirsium horridulum</em>]
John Boyd
CONTACT US

Specialist: John Boyd
2301 S University Ave
Little Rock, AR 72204-4940
Phone: 501-671-2224
FAX: 501-671-2297
jboyd@uaex.edu
www.uaex.edu