Ceiba;name of a genus of many species of large trees found in tropical areas;including Mexico;Guatemala;Central and South America
Blue Agave (Agave tequilana)
Pineapples (Ananas comosus)
Close-up of cactus plant, Yelapa, Jalisco, Mexico
Honey locust thorn
Cactus spines
Cactus plants
Cactus plant
Close up of thorns of plant from agave species
Sweet chestnut
Cactus Facheiroa ulei abstract
Euphorbia officinarum subsp. echinus
Slender candelabra euphorbia (Euphorbia avasmontana)
Succulent spiny spurge (Euphorbia grandicornis)
Ripe sloes (Prunus spinosa)
Thorns of an agave
Close-up of cactus plants on field, Yelapa, Jalisco, Mexico
Close-up of cactus
Balm of Gilead (Cedronella canariensis) stem
Sea holly (Eryngium giganteum)
Fox-tail agave (Agave attenuata)
Thorn apple (Datura stramonium) seed pod
Blessed thistle (Cnicus benedictus)
Castor oil fruits (Ricinus communis)
Acacia thorns
Sea holly
Century plant leaves
Spurge (Euphorbia canariensis)
Rose thorns
Teasel flower head
Polaskia chichipe cactus
Close-up of thorns on a spiked plant, San Miguel de Allende, Guanajuato, Mexico
Thorns on Trunk of Ceiba Tree, Close-Up
Raptor perched in the top of a thorny acacia tree
Fresh green succulent plants in garden
Cactus against a clear blue sky
Thorny plant stalk
Four roses, X-ray
Holly (Osmanthus heterophyllus)
Peacock butterfly caterpillars
Cactus in flower
Cactus (Winterocereus aureispina)
Dried teasel abstract
Hedgehog cactus (Echinocereus sp.)
Carline thistle
Rosa thorns
Parodia herteri cactus
Gymnocalycium stenopleurum cactus
Gymnocalcyium horstii cactus
Mammillaria geminispina cactus
Parodia cactus and succulents
Bramble stem, foliage and root system
Eryngium 'Dove Cottage Hybrid'
Chilean Rhubarb (Gunnera manicata)
Houseleek (Sempervivum 'Blue Boy')
Houseleek (Sempervivum montana)
Cactus, Epithelantha micromeris
Centaurea sphaerocephala flower
Honey locust thorn, light micrograph
Prickly pears (Opuntia ficus-indica)
Eryngium x tripartitum flowers
Gorse (Ulex europaeus), Pembrokeshire, Wales, UK
Agave Plant
Pochote tree (Pachira quinata), Oaxaca, Mexico
Teasel (Dipsacus sylvestris)
Acacia karoo thorns
American sweetgum (Liquidambar styraciflua) fruit
London plane (Platanus ラ hispanica) fruit
Bramble (Rubus sp.) branch, X-ray
Echeveria plant
Wind sculpted hawthorn tree (Crataegus monogyna)
Sweet chestnuts (Castanea sativa)
Beech (Fagus sylvatica)
Robin's pincushion galls
Aloe vera
Puncture vine (Tribulus terrestris)
Saguaro cactus
Cactus plant spines
Cactus
Alluaudia procera spines and leaves
Alluaudia procera tree
Cacti
Prickly pear cactus, Opuntia ficus-indica
Prickly pear cactus (Opuntia sp.)
Cacti garden
Flowering cactus (Cleistocactus sepium)
Thistle flower
Teasel seed head
Shell, fruit and leaves of Durio zibethinus
Crown of thorns
Stalk of Tropical Plant with Sharp Slender Thorns
Prickly pear (Opuntia ficus-indica)
Acacia flowers (Acacia karoo)
Rattan palm
blur in south africa abstract leaf of cactus plant and light
Venus flytrap leaf, SEM
Sceptrum banksia (Banksia sceptrum)
Stachys recta calyx, light micrograph
Aloe vera flowers
Venus flytrap (Dionaea muscipula)
Thornapple seeds
Thorn apple seed pod
Holly leaves
Venus flytrap leaves, SEM
Carnivorous plant leaf scales, SEM
Potted cactus plant
Cleistocactus cactus
Ferocactus cactus
Alluaudia procera leaves
Didieriaceae thorns
Star cactus (Astrophytum ornatum)
Mammillaria zeilmanniana
Echinopsis smrziana
Flowering cactus plant
Goosegrass leaf, SEM
Marigold pollen grain, SEM
Arnica pollen grain, SEM
Sunflower pollen, SEM
Flower pollen
Common ragweed pollen, SEM
Marsh mallow pollen, SEM
Mammillaria spinosissima in flower
Plant trichome, light micrograph
Balloon milkweed
Cherry laurel (Prunus laurcocerasus)
Calliandra haematocephala
Common spangle gall
Silk button galls
Common spangle galls
Carline thistle (Carlina vulgaris)
Fly caught in a venus flytrap
Venus flytrap
Teasel buds (Dipsacus fullonum)
Spear thistle flower
Cotton thistle (Onopordum acanthium)
Cabbage thistle (Cirsium oleraceum)
Spear thistle (Onopordum sp.)
South African porcupine
Lava cactus
Close-up of spikes on cactus
Hedgehog
Long-horned orb-weaver spider
Tobacco (Nicotiana alata) leaf, SEM
Close-up of thorns on a rose stem
Water fern leaf hairs
Christ's thorn (Phalacrocorax carbo)
White Tipped Agave Plant, Kenya