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Linnaea
Linnaea borealis is a species of flowering plant in the family Caprifoliaceae (the honeysuckle family). It is the only species in the genus Linnaea. It is a boreal to subarctic woodland subshrub, commonly known as twinflower (sometimes written twin flower).
This plant was a favourite of Carl Linnaeus, founder of the modern system of binomial nomenclature, after whom the genus was named.
The perennial stems of Linnaea borealis are slender, pubescent, and prostrate, growing to 20–40 centimetres (8–15+1⁄2 inches) long, with opposite evergreen rounded oval leaves 3–10 millimetres (1⁄8–3⁄8 in) long and 2–7 mm (1⁄16–1⁄4 in) broad. The flowering stems curve erect, to 4–8 cm (1+1⁄2–3+1⁄4 in) tall, and are leafless except at the base. The flowers are paired, pendulous, 7–12 mm (1⁄4–1⁄2 in) long, with a five-lobed, pale pink corolla.
L. borealis is self-incompatible, requiring cross-pollination to produce viable seeds; since pollen dispersal is usually not far, individuals and clonal colonies can become reproductively isolated. Regardless of seed production, Linnaea plants in a particular area often spread by stolons to form clonal patches of the same genotype.
Linnaea borealis was first formally described by Carl Linnaeus in 1753 in Species Plantarum. It was the sole species in the genus Linnaea. The genus name had been used earlier by the Dutch botanist Jan Frederik Gronovius, and was given in honour of Linnaeus. Linnaeus adopted the name because Linnaea borealis was his favourite plant.
Linnaea borealis is considered to be a single circumboreal species, with three generally recognized subspecies:
The English name "twinflower" for Linnaea borealis refers to the plant's paired flowers.
In 2013 Christenhusz et al. concluded that the genus Abelia, as then circumscribed, was polyphyletic, and proposed merging Abelia and several other genera in tribe Linnaeeae into Linnaea. Wang, Landrein, et al. proposed reorganizing the tribe into several new and existing genera, and keeping Linnaea a monotypic genus. The circumscription proposed by Wang, Landrein, et al. is currently accepted by Plants of the World Online.
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Linnaea
Linnaea borealis is a species of flowering plant in the family Caprifoliaceae (the honeysuckle family). It is the only species in the genus Linnaea. It is a boreal to subarctic woodland subshrub, commonly known as twinflower (sometimes written twin flower).
This plant was a favourite of Carl Linnaeus, founder of the modern system of binomial nomenclature, after whom the genus was named.
The perennial stems of Linnaea borealis are slender, pubescent, and prostrate, growing to 20–40 centimetres (8–15+1⁄2 inches) long, with opposite evergreen rounded oval leaves 3–10 millimetres (1⁄8–3⁄8 in) long and 2–7 mm (1⁄16–1⁄4 in) broad. The flowering stems curve erect, to 4–8 cm (1+1⁄2–3+1⁄4 in) tall, and are leafless except at the base. The flowers are paired, pendulous, 7–12 mm (1⁄4–1⁄2 in) long, with a five-lobed, pale pink corolla.
L. borealis is self-incompatible, requiring cross-pollination to produce viable seeds; since pollen dispersal is usually not far, individuals and clonal colonies can become reproductively isolated. Regardless of seed production, Linnaea plants in a particular area often spread by stolons to form clonal patches of the same genotype.
Linnaea borealis was first formally described by Carl Linnaeus in 1753 in Species Plantarum. It was the sole species in the genus Linnaea. The genus name had been used earlier by the Dutch botanist Jan Frederik Gronovius, and was given in honour of Linnaeus. Linnaeus adopted the name because Linnaea borealis was his favourite plant.
Linnaea borealis is considered to be a single circumboreal species, with three generally recognized subspecies:
The English name "twinflower" for Linnaea borealis refers to the plant's paired flowers.
In 2013 Christenhusz et al. concluded that the genus Abelia, as then circumscribed, was polyphyletic, and proposed merging Abelia and several other genera in tribe Linnaeeae into Linnaea. Wang, Landrein, et al. proposed reorganizing the tribe into several new and existing genera, and keeping Linnaea a monotypic genus. The circumscription proposed by Wang, Landrein, et al. is currently accepted by Plants of the World Online.