Ouch! Thorns, Spines & Prickles

Challenge #12 in the Life in the Natural World series. Hosted by RuthC.
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Many plants grow sharp prickles, spines or thorns, usually to protect themselves from predators, such as insects, birds, or animals. Show us the interesting or bizarre forms of these sharp appendages in your entries, which should be in their natural environment, not under studio lights. Macro shots are welcome. Insects or other small creatures may be present, but must not dominate the picture. Check Wikipedia for more information about this thorny subject. SIZE DOES MATTER: See below!
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City of Chicago Flag
Saguaro RZ
bloodondorn2
Spiky plant looking at small bay
Pretty Well Protected
Aiphanes minima_ spiny palm tree
Cactus
Botanical Saw Blades
Mammillaria
Don't get too close!
Prickley old timer..
Horse Chestnut
saguaro sunrise (1 of 1)
Aloe and Spider's Silk
Protecting its greens...
Cactus
Ouch-Ouch
thorns
Look But Do Not Touch
at twilight
Dusty leaves
Thorny subdivision
The eye of a cactus.
Thorny flower
cactus
Cactus Flower
Prickled Beauty
Prickly pears
Common Gorse (U.Europaeus) with a sea sunset background.
Ouille !!
among the thorns
Thorns in the sunshine
cactus nest
Hunting for Pineapples
Camplong
motherInLawSeat
Natural fortress
Getting to the Point
Dare to touch me
Cholla Cactus
golden monster
Florida cactus
Spines like Needles
Architecture of spikes
Pricks all around
Prickly Pear Cactus
Grasp firmly with bare hands!
nature's syringe?
Prickly Threesome
Thorny Agave Plant
vicious spines of gorse
Prickly Pear cactus near Sedona, AZ
Thistle in front of Appollo Sanctuary (Delos, Cyclades, Greece)
Don't tread on me!
Sharp
Please don't sit on me!
Barrel Cactus Bald Spot
Ouch!
A Blooming Pincushion
Rifle Gap Cactus Flower
White Crown of Thorns
Mother in low chair
Thorny Subject
Ouch
Thorns smaller
Aloe Vera
Stick With Me
Cactus
Mediterranean cactus
The cactus
Thorns
Burrs on Snow
cardos
Cactus Blooms
Pricky Spines !!! Not very sure of the name
Cactus Critter
Hiding among the prickles
Now that is going to hurt
Prickles
not a rose
Thorn and Shadows
Tree Limpets
Prickly Pear In Bloom
ferox
Thistle
Spikes
like a pin cushion
Whispering Thorns
A Wall of Thorns
Does The Bee Know?
Common Stinging Nettle
Saguaro Spine  - Tucson November 2011
The nasty side of a rose
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Sample entries
These entries were provided by the challenge host(s) as samples and cannot be voted on. Upload sample image.
Prickles All Over
Thorns in Winter
Aloe With Attitude
1,600px. MAXIMUM
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