Callery pears did not turn out to be useful for fireblight resistance when crossed with fruiting pear, but was used as an ornamental, with unfortunate serious modern-day consequences as an invasive species.Ĭan’t win ’em all: by Jan. It is caused by a bacterium then classified as Bacillus amylovora (later changed to Erwinia amylovora in honor of Erwin). Smith of the USDA, who wanted him to find pears of genetic resistance to the deadly fireblight disease of pears and apples.

He found this pear along the Yangtze River, fulfilling the charge of his boss Erwin F. Plant Lovers' Almanac: What the Romans and Bob Dylan had to say about cornįinally, an example of the tricky realities and unintended consequences of plant exploration and introduction is one more plant introduced by Frank Meyer: he brought back 500 pounds of seeds of Callery pear. I will have to roam around in my next life.” When I think about all these unexplored areas, I get fairly dazzled one will never be able to cover them all. What followed were four extensive collection trips to China, Korea, Mongolia, Siberia, and the Middle East.Īs fellow economic plant introducer David Fairchild wrote of Meyer’s detailed collection notes: “his suggestions are backed up by living material which will make it easy to provide the breeders with many of the plants which he describes.” In a letter to Fairchild in 1907, Meyer wrote: “Our short life will never be long enough to find out all about this mighty land. Meyer immigrated to America in 1901, eventually working for the USDA’s Plant Introduction Station in Santa Ana, California. Leaves opposite, simple, 2.5-7. Pobierz zdjcie bez tantiem (Drama in nature on the truck of a Paperbark Maple tree with green ferns at the base covered in snow ) i przeszukaj podobne obrazy w serwisie Adobe Stock.

Paperbark maple Acer griseum Orange tree branches under sunlight. Isolated big yellow and orange sun reflecting in the water. Frank Meyer (1875-1918) was an influential naturalist.īorn Frans Nicholas Meijer in Amsterdam, he worked in European nurseries and as an assistant to Hugo de Vries, the Dutch botanist and early geneticist who postulated the idea of genes. Native to (or naturalized in) Oregon: Deciduous tree/shrub, 10-20 ft (3-6 m) high, multistemmed, rounded but variable, open. Beautiful red japanese maple tree branches wave under light breese in a Park in Autumn.