Species
Some of the species in the section are:
- Populus alba: white poplar (northwest Africa, southern Europe, east to central Asia)
- Populus adenopoda: Chinese aspen (China, south of P. tremula)
- Populus davidiana
- Populus grandidentata: bigtooth aspen (eastern North America, south of P. tremuloides)
- Populus ningshanica
- Populus qiongdaoensis
- Populus rotundifolia
- Populus sieboldii: Japanese aspen (Japan)
- Populus tomentosa, Chinese white poplar (China)
- Populus tremula: Eurasian aspen (northern Europe and Asia)
- Populus tremuloides: American aspen (northern and western North America)
- Populus wulianensis
Natural hybrids between species in the section include:
- Populus × canescens: grey poplar, P. alba × P. tremula
- Populus × hopeiensis: P. davidiana × P. tomentosa
- Populus × pseudotomentosa: P. adenopoda × P. tomentosa
Read more about this topic: Populus Sect. Populus
Famous quotes containing the word species:
“Nature seemed to have adorned herself for our departure with a profusion of fringes and curls, mingled with the bright tints of flowers, reflected in the water. But we missed the white water-lily, which is the queen of river flowers, its reign being over for this season.... Many of this species inhabit our Concord water.”
—Henry David Thoreau (1817–1862)
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—David Hume (1711–1776)
“Not only does every animal live at the expense of some other animal or plant, but the very plants are at war.... The individuals of a species are like the crew of a foundered ship, and none but good swimmers have a chance of reaching the land.”
—Thomas Henry Huxley (1825–95)