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Bistorta Attenuata
''Bistorta'' is a genus of flowering plants in the family Polygonaceae. about 40 species are accepted. It has been supported as a separate clade by molecular phylogenetic analysis. ''Bistorta'' species are native throughout much of the Northern Hemisphere, as far south as Mexico in North America and Thailand in Asia. Description Species of ''Bistorta'' are perennial herbaceous plants. Their roots are fibrous, forming rhizomes. They have erect, unbranched stems. Their leaves are usually longer than wide, mostly basal, but with some arranged alternately on the stems. The inflorescences are spikelike. The individual flowers have five white to purple-pink (rarely red) tepals. The flowers are bisexual, although the 5–8 stamens are sometimes poorly developed. There are three styles. The fruits are in the form of achenes, that are brown or dark brown, unwinged, and three-angled. The monoploid number of chromosomes, ''x'', is 11 or 12. Taxonomy In 1753, Carl Linnaeus divided up hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Officinalis
''Bistorta officinalis'' (synonym ''Persicaria bistorta''), known as bistort, common bistort, European bistort or meadow bistort, is a species of flowering plant in the dock family Polygonaceae native to Europe and northern and western Asia. Other common names include snakeroot, snake-root, snakeweed and Easter-ledges. Description ''Bistorta officinalis'' is an herbaceous perennial growing to tall by wide. It has a thick, twisted rootstock which has probably given it its common name of snakeroot. The foliage is normally basal with a few smaller leaves produced near the lower end of the flowering stems. The leaves usually hairless; the basal ones are longish-oval with long winged stalks and rounded or heart-shaped bases; the upper ones are few and are triangular, tapered and stalkless. There are stipules at their base which are fused into a sheath surrounding the stem. The petioles are broadly winged. The inflorescence is a spike. The plant blooms from late spring into autumn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polygonoideae
Polygonoideae is a subfamily of plants in the family Polygonaceae. It includes a number of plants that can be highly invasive, such as Japanese knotweed, ''Reynoutria japonica'', and its hybrid with '' R. sachalinensis'', ''R.'' × ''bohemica''. Boundaries between the genera placed in the subfamily and their relationships have long been problematic, but a series of molecular phylogenetic studies have clarified some of them, resulting in the division of the subfamily into seven tribes. Taxonomy Phylogeny A 2015 molecular phylogenetic study suggested that the genera and tribes in Polygonoideae were related as shown in the following cladogram. ''Rumex'' included ''Emex'', and ''Fallopia'' was not monophyletic, with some species placed outside the main group in the tribe Polygoneae, and some others grouping with '' Pteroxygonum'', placed in the tribe Pteroxygoneae. Genera Some of the boundaries between the genera are not settled ; in particular, ''Fallopia'' is at least paraphyle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Coriacea
''Bistorta'' is a genus of flowering plants in the family Polygonaceae. about 40 species are accepted. It has been supported as a separate clade by molecular phylogenetic analysis. ''Bistorta'' species are native throughout much of the Northern Hemisphere, as far south as Mexico in North America and Thailand in Asia. Description Species of ''Bistorta'' are perennial herbaceous plants. Their roots are fibrous, forming rhizomes. They have erect, unbranched stems. Their leaves are usually longer than wide, mostly basal, but with some arranged alternately on the stems. The inflorescences are spikelike. The individual flowers have five white to purple-pink (rarely red) tepals. The flowers are bisexual, although the 5–8 stamens are sometimes poorly developed. There are three styles. The fruits are in the form of achenes, that are brown or dark brown, unwinged, and three-angled. The monoploid number of chromosomes, ''x'', is 11 or 12. Taxonomy In 1753, Carl Linnaeus divided up hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Burmanica
''Bistorta'' is a genus of flowering plants in the family Polygonaceae. about 40 species are accepted. It has been supported as a separate clade by molecular phylogenetic analysis. ''Bistorta'' species are native throughout much of the Northern Hemisphere, as far south as Mexico in North America and Thailand in Asia. Description Species of ''Bistorta'' are perennial herbaceous plants. Their roots are fibrous, forming rhizomes. They have erect, unbranched stems. Their leaves are usually longer than wide, mostly basal, but with some arranged alternately on the stems. The inflorescences are spikelike. The individual flowers have five white to purple-pink (rarely red) tepals. The flowers are bisexual, although the 5–8 stamens are sometimes poorly developed. There are three styles. The fruits are in the form of achenes, that are brown or dark brown, unwinged, and three-angled. The monoploid number of chromosomes, ''x'', is 11 or 12. Taxonomy In 1753, Carl Linnaeus divided up hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Bistortoides
''Bistorta bistortoides'' (American bistort, western bistort, smokeweed, mountain meadow knotweed, mountain buckwheat or mountain meadow buckwheat) is a perennial herb in the buckwheat and knotweed family Polygonaceae. The species name remains unresolved. ''Bistorta bistortoides'' is distributed throughout the Mountain West in North America from Alaska and British Columbia south into California and east into the Rocky Mountains. ''Bistorta bistortoides'' grows from foothills to above the timberline, although plants growing above 7,500 feet (2250 m) are smaller and seldom reach more than 12 inches (30 cm) in height. Plants in other areas may reach over half a meter–1.5 feet (20–60 cm) tall. The leaves are leathery and up to 40 centimeters (3 feet) long, and are mostly basal on the stem. The dense cylindrical to oblong inflorescence is packed with small white to pinkish flowers, each a few millimeters wide and with protruding stamens. Rodents and bears consume the ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Attenuatifolia
''Bistorta'' is a genus of flowering plants in the family Polygonaceae. about 40 species are accepted. It has been supported as a separate clade by molecular phylogenetic analysis. ''Bistorta'' species are native throughout much of the Northern Hemisphere, as far south as Mexico in North America and Thailand in Asia. Description Species of ''Bistorta'' are perennial herbaceous plants. Their roots are fibrous, forming rhizomes. They have erect, unbranched stems. Their leaves are usually longer than wide, mostly basal, but with some arranged alternately on the stems. The inflorescences are spikelike. The individual flowers have five white to purple-pink (rarely red) tepals. The flowers are bisexual, although the 5–8 stamens are sometimes poorly developed. There are three styles. The fruits are in the form of achenes, that are brown or dark brown, unwinged, and three-angled. The monoploid number of chromosomes, ''x'', is 11 or 12. Taxonomy In 1753, Carl Linnaeus divided up hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Attenuata
''Bistorta'' is a genus of flowering plants in the family Polygonaceae. about 40 species are accepted. It has been supported as a separate clade by molecular phylogenetic analysis. ''Bistorta'' species are native throughout much of the Northern Hemisphere, as far south as Mexico in North America and Thailand in Asia. Description Species of ''Bistorta'' are perennial herbaceous plants. Their roots are fibrous, forming rhizomes. They have erect, unbranched stems. Their leaves are usually longer than wide, mostly basal, but with some arranged alternately on the stems. The inflorescences are spikelike. The individual flowers have five white to purple-pink (rarely red) tepals. The flowers are bisexual, although the 5–8 stamens are sometimes poorly developed. There are three styles. The fruits are in the form of achenes, that are brown or dark brown, unwinged, and three-angled. The monoploid number of chromosomes, ''x'', is 11 or 12. Taxonomy In 1753, Carl Linnaeus divided up hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Amplexicaulis
''Bistorta amplexicaulis'' (synonym ''Persicaria amplexicaulis''), the red bistort or mountain fleece, is a species of flowering plant in the buckwheat family Polygonaceae, native to China, the Himalayas, and Pakistan. It is a damp-loving herbaceous perennial growing to tall and wide, with heart-shaped pointed leaves, downy beneath, and narrow spikes of rose-red or white flowers in summer. Numerous cultivars have been developed for garden use, including 'Firetail'. Etymology The Latin specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ... ''amplexicaulis'' means "clasping or embracing the stem", and refers to the leaves' habit of growing around the stem. References Perennial plants Plants described in 1825 Flora of Asia amplexicaulis {{Polygonaceae-st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Alopecuroides
''Bistorta'' is a genus of flowering plants in the family Polygonaceae. about 40 species are accepted. It has been supported as a separate clade by molecular phylogenetic analysis. ''Bistorta'' species are native throughout much of the Northern Hemisphere, as far south as Mexico in North America and Thailand in Asia. Description Species of ''Bistorta'' are perennial herbaceous plants. Their roots are fibrous, forming rhizomes. They have erect, unbranched stems. Their leaves are usually longer than wide, mostly basal, but with some arranged alternately on the stems. The inflorescences are spikelike. The individual flowers have five white to purple-pink (rarely red) tepals. The flowers are bisexual, although the 5–8 stamens are sometimes poorly developed. There are three styles. The fruits are in the form of achenes, that are brown or dark brown, unwinged, and three-angled. The monoploid number of chromosomes, ''x'', is 11 or 12. Taxonomy In 1753, Carl Linnaeus divided up hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Albiflora
''Bistorta'' is a genus of flowering plants in the family Polygonaceae. about 40 species are accepted. It has been supported as a separate clade by molecular phylogenetic analysis. ''Bistorta'' species are native throughout much of the Northern Hemisphere, as far south as Mexico in North America and Thailand in Asia. Description Species of ''Bistorta'' are perennial herbaceous plants. Their roots are fibrous, forming rhizomes. They have erect, unbranched stems. Their leaves are usually longer than wide, mostly basal, but with some arranged alternately on the stems. The inflorescences are spikelike. The individual flowers have five white to purple-pink (rarely red) tepals. The flowers are bisexual, although the 5–8 stamens are sometimes poorly developed. There are three styles. The fruits are in the form of achenes, that are brown or dark brown, unwinged, and three-angled. The monoploid number of chromosomes, ''x'', is 11 or 12. Taxonomy In 1753, Carl Linnaeus divided up hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Affinis
''Bistorta affinis'' (synonyms ''Polygonum affine'', ''Persicaria affinis''), the Himalayan bistort, fleece flower, or knotweed, is a species of flowering plant in the family Polygonaceae, native to the Himalayas (Tibet, Nepal, northern India, Pakistan, Kashmir). Description ''Bistorta affinis'' is a creeping, densely tufted, mat-forming perennial, growing to tall by broad. The narrow elliptic leaves are white on the underside because of a waxy coating. Leaves are mostly at the base, 3–8 cm long, with the base narrowed to a short stalk. Leaf margins are entire or very finely toothed. The mid-vein is prominent. Cylindrical spikes of many pale pink or rose-red flowers are borne at the top of short erect stems, from midsummer to autumn. Flower-spikes are long, with densely crowded flowers. Stamens protrude slightly out of the flowers. Flowering stems are several, 5–25 cm tall, with very few smaller leaves. When the flowers have died, they tend to persist on the plant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bistorta Abukumensis
''Bistorta abukumensis'' is a species of flowering plant in the family Polygonaceae The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The name is based on the genus ''Polygonum'', and was first used by Antoine Laurent de Jussieu in 1789 ..., native to Japan. It was first described in 1995. Bistorta abukumensis 4.JPG, Leaves Bistorta abukumensis 2.JPG, Flowers References abukumensis Flora of Japan Plants described in 1995 {{Polygonaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |