Sea holly
Sea holly (Eryngium giganteum)
Sea holly (Eryngium sp.)
Cabbage thistle (Cirsium oleraceum)
Eryngium 'Dove Cottage Hybrid'
Spear thistle flower
Blessed thistle (Cnicus benedictus)
Castor oil fruits (Ricinus communis)
Rattlesnake Master (Eryngium yuccifolium) flowers
Carline thistle
Holly leaves
Acacia flowers (Acacia karoo)
Comfrey flower petal, SEM
Amethyst sea holly in front of black background, close-up
Chilean Rhubarb (Gunnera manicata)
Balm of Gilead (Cedronella canariensis) stem
Lemon balm, SEM
Thorn apple seed pod
Carline thistle (Carlina vulgaris)
Spear thistle (Onopordum sp.)
Cotton thistle (Onopordum acanthium)
Thistle flower
Sea holly (Eryngium sp.), X-ray
Rose thorns
Fox-tail agave (Agave attenuata)
Holly (Osmanthus heterophyllus)
Lythrum salicaria 'Fire Candle'
Orchid primrose (Primula vialii) flowers
Rosemary, SEM
Delphinium 'Blue Tit' flowers
Thornapple seeds
Centaurea sphaerocephala flower
Teasel buds (Dipsacus fullonum)
Century plant leaves
Flowering prickly pear (Opuntia sp.)
Eryngium x zabelii 'Jos Eijking'
Sea holly (Eryngium maritimum)
Puncture vine (Tribulus terrestris)
Cactus spines
Honey locust thorn
Flowering cactus (Cleistocactus sepium)
Cactus Facheiroa ulei abstract
Dried teasel abstract
Spear thistle (Cirsium vulgare)
Alluaudia procera spines and leaves
Sweet chestnut
Spiny bush cricket
Stachys recta calyx, light micrograph
Love in the mist seed head (Nigella sp.)
Thistle, extreme close-up
Wind sculpted hawthorn tree (Crataegus monogyna)
Ceiba;name of a genus of many species of large trees found in tropical areas;including Mexico;Guatemala;Central and South America
Cactus plants
Cactus plant
Goosegrass leaf, SEM
Thorn apple (Datura stramonium) seed pod
Polaskia chichipe cactus
Teasel seed head
Acacia thorns
South African porcupine
Sea holly (Eryngium bourgatii), X-ray
Mammillaria zeilmanniana
Flowering cactus plant
Bee sting
Alluaudia procera tree
Aloe vera
Bramble stem, foliage and root system
Blue Agave (Agave tequilana)
Slender candelabra euphorbia (Euphorbia avasmontana)
Flower pollen
Houseleek (Sempervivum montana)
Aloe vera flowers
Venus flytrap leaf, SEM
Bramble (Rubus sp.) branch, X-ray
Sea urchin
Gorse (Ulex europaeus), Pembrokeshire, Wales, UK
Houseleek (Sempervivum 'Blue Boy')
Venus flytrap (Dionaea muscipula)
Vervain (Verbena officinalis)
Yarrow flower petal, SEM
Rosa thorns
Teasel (Dipsacus sylvestris)
Cactus in flower
Prickly pear cactus, Opuntia ficus-indica
Beech (Fagus sylvatica)
Sweet chestnuts (Castanea sativa)
Purple coneflower (Echinacea purpurea)
St. John's wort (Hypericum perforatum)
Leaf oil glands, SEM
エリンジウム 切花栽培
Thorn, extreme close-up
Leavenworth's eryngo (Eryngium leavenworthii) flowers
Aloe vera leaf
Aloe vera leaves
Aloe
Spurge (Euphorbia canariensis)
Teasel flower head
Pineapples (Ananas comosus)
Sunflower pollen, SEM
Close-up of cactus plant, Yelapa, Jalisco, Mexico
Carnivorous plant leaf scales, SEM
Alluaudia procera leaves
Sea urchins
紅葉
Balloon milkweed
Plant with prickly foliage, close-up
Caterpillar
Spiny sea urchin
Slate pencil sea urchin
Banded sea urchin
Parodia herteri cactus
Gymnocalycium stenopleurum cactus
Eryngium x tripartitum flowers
Cactus (Winterocereus aureispina)
Close-up of thorns on a spiked plant, San Miguel de Allende, Guanajuato, Mexico
Robin's pincushion galls
Leaves With Sharp Tips
Close-up of thorns on a rose stem
Cactus plant spines
Cacti
Prickly pear cactus (Opuntia sp.)
Mammillaria geminispina cactus
Euphorbia officinarum subsp. echinus
Pochote tree (Pachira quinata), Oaxaca, Mexico
Ripe sloes (Prunus spinosa)
Stinging nettle leaf, SEM
Sage leaf, SEM
Thorn apple on white background
Echinacea plant
Fresh green succulent plants in garden
Blackstart in a tree
Acacia karoo thorns
Raptor perched in the top of a thorny acacia tree
Plant trichome, light micrograph
Longleaf speedwell, Veronica longifolia, amethyst sea holly, Eryngium and Balsam apple, Clusia major on white background
Garden tiger moth
Predatory katydid
Thyme (Thymus sp.)
Canna (x generalis) x indica in flower
Valerian flowers (Valeriana officinalis)
Yarrow (Achillea millefolium)
Pokeweed (Phytolacca americana)
Spiny rest harrow (Ononis spinosa)