Spiny tree trunk (Pachypodium sp) Berenty Reserve, Madagascar.  ,  high15,,Plant,Vascular plant,Flowering plant,Asterid,Dogbane,Plantae,Plant,Tracheophyta,Vascular plant,Magnoliopsida,Flowering plant,Angiosperm,Seed plant,Spermatophyte,Spermatophytina,Angiospermae,Gentianales,Asterid,Dicot,Dicotyledon,Asteranae,Apocynaceae,Dogbane,Apocyn,Pachypodium,Growth,Grow,Growing,Grows,Nobody,Spike,Spiked,Spikes,Spikey,Spiky,Africa,Madagascar,Malagasy Republic,Republic of Madagascar,Vertical,Low Angle View,Thorn,Thorns,Tree Trunk,Outdoors,Open Air,Outside,Day,Reserve,Biodiversity hotspots,Biodiversity hotspot,Protected area,Unfriendly,Prickly,  ,  Enrique Lopez-Tapia