Poplar

Scientific

Populus (family Salicaceae — same family as [[willow]]) contains ~35 species across the temperate Northern Hemisphere. Principal species:

• Populus tremuloides — quaking aspen; eastern and western North America; the species of Pando
• Populus deltoides — [[eastern-cottonwood|eastern cottonwood]]; the eastern North American floodplain dominant
• Populus nigra — black poplar; Eurasia; the parental species of the Lombardy poplar cultivar
• Populus alba — white poplar; Mediterranean and central European
• Populus balsamifera — balsam poplar; circumpolar boreal

Populus species are pioneers — fast-growing, short-lived, light-demanding, often the first trees to colonize disturbed land. They reproduce sexually via wind-dispersed cotton-fluff seeds (the “cottonwood snow” of June across the American Midwest), but most propagation in clonal stands is by root sprouts.

Pando

Pando — Latin for “I spread” — is a single clonal organism of Populus tremuloides in Fishlake National Forest, Utah. The visible “stand” is ~47,000 stems on 43 hectares, all genetically identical and connected by a shared root system. Best estimates put the age at 14,000+ years, with some scientists arguing for figures up to 80,000 years.

By the standard definition of a “single organism” (all parts genetically identical and physically connected), Pando is the largest and oldest single living organism on Earth — competing with the [[spruce]] Old Tjikko and certain very large fungal mycelial networks for the title. Pando is currently declining due to grazing pressure from deer and elk that prevent young aspen sprouts from establishing.

Cultural and economic

Quaking aspen has a long Indigenous American medicinal tradition — the bark contains salicin (related to the active aspirin precursor in [[willow]]). Aspen wood is the principal raw material for matchsticks and chopsticks in much of the modern industry.

Lombardy poplar (a columnar mutant of Populus nigra) was the iconic poplar of European avenue plantings in the 18th–19th centuries. The species’ tall narrow form became a signature element of French and Italian rural landscapes.

See also

Auto-generated from this entry’s typed relations: frontmatter, grouped by relation type so the editorial signal isn’t flattened.

• Shares approach with: [[willow]] · [[spruce]]
• Produces: [[firewood]]
• Member of: [[plants]]

Sources

• Wikipedia — Populus

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A plant entry in the 0mn1.one [[directory]].