Asplenium rhizophyllum one collection on sandstone in the Shawnee Hills of Illinois. A triploid hybrid between walking fern and Tutwiler's spleenwort was accidentally produced in culture. A similar plant collected from limestone in Shepherdstown, West Virginia could have originated from the same parents, from an unreduced (diploid) gametophyte of Scott's spleenwort crossed with walking fern, or from an unreduced walking fern gametophyte crossed with ebony spleenwort. In 1813, Henry Muhlenberg listed lobed spleenwort as "Asplenium rhizophyllum" var. "pinnatifidum", although he did not provide a description distinguishing the variety from the typical species. It was described as the species "A. pinnatifidum" by Thomas
Peugeot Type 2 rudimentary suspension system pointed the way ahead regarding what would become another mainstream feature of the motor car. The main Peugeot business was, at this time, expanding rapidly its bicycle production, and the Type 2’s light weight may have incorporated lessons learned from cycle production. Four Type 2s were produced. Three were quadricycles while the fourth was a tricycle. They all had space for two on the bench above the engine. Peugeot Type 2 The Peugeot Type 2 is the first petrol/gasoline-powered motor vehicle produced between 1890 and 1891 by the French auto-maker Peugeot at their Valentigney plant. The car