Spines


 * Modified leaves
 * [[image:http://tbn0.google.com/images?q=tbn:646M5uBXQ9bF6M:http://www.boycottdrphil.com/archives/spines.jpg width="254" height="175" link="http://images.google.com/imgres?imgurl=http://www.boycottdrphil.com/archives/spines.jpg&imgrefurl=http://www.boycottdrphil.com/&h=300&w=400&sz=65&hl=en&start=8&usg=__GRo5h3OLOZo3CgZWL7RHAJcFsPs=&tbnid=646M5uBXQ9bF6M:&tbnh=93&tbnw=124&prev=/images%3Fq%3Dspines%26gbv%3D2%26hl%3Den"]]