Wayne's Word Index Noteworthy Plants Trivia Lemnaceae Biology 101 Botany Search Gear Shift Knob Made From a Knobcone Pine This serotinous cone from a knobcone pine (Pinus attenuata) was used by Mr. Wolffia as a gear shift knob on his truck. It has remained tightly closed for more than forty years! Return To The "Ashes To Wildflowers" Article Return To The WAYNE'S WORD Home Page All text material & images on these pages copyright © W.P. Armstrong