Isopyrum

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Isopyrum
Isopyrum thalictroides.jpg
Isopyrum thalictroides
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Ranunculales
Family: Ranunculaceae
Subfamily: Thalictroideae
Genus: Isopyrum
L.
Type species
Isopyrum thalictroides
L.

Isopyrum is a genus of flowering plants of the family Ranunculaceae native to Eurasia and North America. Isopyrum plants possess white flowers with five sepals and five petals.

Contents

The genus was first described in 1753 by the biologist Carl Linnaeus. In 1920, the genus Paraquilegia was segregated out from Isopyrum to contain plants that we more morphologically aligned with members of the genus Aquilegia (columbines).

Description

Isopyrum is a genus of perennial herbs in the family Ranunculaceae. The smooth and glabrous stems stand erect. Leaves are biternate. The leaves attached to the base of the stem are pale green on the bottom and green on the top. Leaves attached to the stem have short petioles with white sheathes. [1]

Flowers on Isopyrum plants have radial symmetry. Each flower possesses five sepals and five petals. Sepals are white and petaloid. The petals are substantially smaller than the sepals. Each flower also features yellow anthers and between 20 and 30 stamens. There are between one and five pistils (female sex organs) to a flower. [1]

Isopyrum fruit are stored in follicles that appear in groups of one to five. Each bears numerous seeds. These seeds are smooth and have an ovoid to ellipsoid shape. The seeds can be varying shades of black. [1]

Taxonomy

The genus Isopyrum was first described by the Swedish biologist Carl Linnaeus in 1753. [1] In 1920, British botanists James Ramsay Drummond and John Hutchinson published a paper, "A Revision of Isopyrum (Ranunculaceae) and Its Nearer Allies", in the Royal Botanic Gardens, Kew's Bulletin of Miscellaneous Information to address problems that had developed within the genus. Prior to their paper, the genus had permitted substantial morphological variance to coexist with certain species demonstrating greater affinities towards the genus Aquilegia (columbines). [2] Part of the pair's proposed resolution was creating Paraquilegia and expanding the genus Semiaquilegia . [3] :46

Distribution

The Royal Botanic Gardens, Kew's Plants of the World Online (POWO), which recognizes four species, characterized Isopyrum as solely an Eurasian genus. POWO treats Isopyrum as native to Spain, France, and much of Eastern Europe. POWO also identifies that the genus was introduced to Denmark and has an extinct range in Switzerland. [4]

According to the Flora of China , members of Isopyrum are present across Eurasia and in North America. [1] As of 2001, the Flora of China identified two species Isopyrum anemonoides and Isopyrum manshuricum  as having native ranges which extended into China. [1]

Species

The list may not be complete or up-to-date. Many of the species formerly placed in Isopyrum are now placed in other genera of the Ranunculaceae, especially Enemion and Dichocarpum . Accepted species include: [5]

Synonyms include: [6]

Related Research Articles

<i>Aquilegia</i> Genus of perennial plants (columbine)

Aquilegia is a genus of about 130 species of perennial plants that are found in meadows, woodlands, and at higher elevations throughout the Northern Hemisphere, known for the spurred petals of their flowers.

<span class="mw-page-title-main">Ranunculaceae</span> Family of eudicot flowering plants

Ranunculaceae is a family of over 2,000 known species of flowering plants in 43 genera, distributed worldwide.

<i>Aquilegia chrysantha</i> North American species of columbine

Aquilegia chrysantha, the golden columbine, is a perennial herbaceous flowering plant native to the southwestern United States and northwestern Mexico. The plant, with a height of between 40 centimetres (16 in) and 120 centimetres (47 in), has yellow flowers. A. chrysantha. as with other members of the Aquilegia coerulea species complex, is evolved for pollination by hawkmoth. It favors moist environments in its mountainous range.

<i>Semiaquilegia</i> Genus of flowering plants

Semiaquilegia is a genus of flowering plants of the family Ranunculaceae, native to eastern Asia. The genus was first proposed by the botanist Tomitaro Makino in 1902. Most authorities generally hold that there is only one species in the genus, Semiaquilegia adoxoides, though other species have been proposed as members. The Royal Botanic Gardens, Kew's Plants of the World Online accepts four species of Semiaquilegia.

Paraquilegia uniflora is a species of perennial flowering plant in the family Ranunculaceae. Its range spans Tajikistan to the mountainous border between Afghanistan and northern Pakistan.

<i>Aquilegia alpina</i> Alpine European species of columbine

Aquilegia alpina, often called the alpine columbine or breath of God, is a perennial species of flowering plant in the family Ranunculaceae, native to the western and central Alps. Though rare in its Swiss, Austrian, and Italian range, it is commonly found in the French Maritime Alps. A. alpina is appreciated for its light blue to blue-purple flowers.

<i>Semiaquilegia adoxoides</i> Species of flowering plant

Semiaquilegia adoxoides is a species of perennial flowering plant in the Ranunculaceae. Native to Japan, Korea, and China, the plant grows to about 40 cm (16 in) tall and blooms with pale pink flowers. Now often considered the sole member of the genus Semiaquilegia, it bears similarities to members of the genus Aquilegia. S. adoxoides is native to China, Korea, and Japan and has an introduced population on Taiwan.

<i>Aquilegia gegica</i> Species of flowering plant

Aquilegia gegica is a species of flowering plant in the genus Aquilegia (columbine) in the family Ranunculaceae endemic to the western South Caucasus region in Abkhazia and Georgia. The plant's flower petals are light blue.

<i>Dichocarpum</i> Genus of plants

Dichocarpum is a genus of flowering plants belonging to the family Ranunculaceae.

<i>Paraquilegia</i> Genus of plants

Paraquilegia is a genus of flowering plants belonging to the family Ranunculaceae. The genus was segregated out from the genus Isopyrum in 1920 by British botanists James Ramsay Drummond and John Hutchinson. The native range of the genus is temperate central Asia.

<i>Aquilegia ecalcarata</i> Chinese endemic species of columbine

Aquilegia ecalcarata, the spurless columbine or false columbine, is a perennial species of flowering plant in the family Ranunculaceae, native to central China.

<i>Aquilegia parviflora</i> Species of flowering plant

Aquilegia parviflora is a species of flowering plant of the Aquilegia (columbine) genus in the family Ranunculaceae native to the Asian regions of Siberia, northern Mongolia, northern China, and Sakhalin.

<i>Aquilegia moorcroftiana</i> Species of flowering plant

Aquilegia moorcroftiana is a species of flowering plant in the genus Aquilegia (columbines) in the family Ranunculaceae. It is native to central Asia, with a range spanning Afghanistan, Tajikistan, Pakistan, Kashmir, Nepal, and Tibet. A. moorcroftiana grows at the highest elevation of any species of columbine, with examples frequently found at over 4,000 metres (13,000 ft) of elevation.

<i>Aquilegia confusa</i> Species of flowering plant

Aquilegia confusa is a partially accepted species of flowering plant of the genus Aquilegia (columbines) in the family Ranunculaceae that is endemic to the eastern and southern European Alps in Switzerland and Italy. The entirety of the plant, particularly its seeds, are toxic to humans.

<i>Aquilegia amurensis</i> Species of flowering plant

Aquilegia amurensis is a partially accepted species of flowering plant in the genus Aquilegia (columbines) in the family Ranunculaceae that is native to northeast Asia. Its natural range is in the northern Greater Khingan mountain range and Amur River of China, as well as Siberian Russia, Mongolia, and possibly North Korea. Flowers of this plant have petal blades that are whitish or white-tipped, with blue-violet nectar spurs and sepals. The plant is rarely cultivated.

<i>Aquilegia microcentra</i> Species of flowering plant

Aquilegia microcentra is a species of flowering plant in the family Ranunculaceae native to Uruzgan Province in central and southeastern Afghanistan. The plant is understood as related to Aquilegia moorcroftiana, which has a range spanning into Afghanistan. A. microcentra has small, white flowers. The species was first described by the Flora Iranica in 1992 from specimens collected by Karl Heinz Rechinger in 1967.

<i>Aquilegia maimanica</i> Species of flowering plant

Aquilegia maimanica is a species of flowering plant in the family Ranunculaceae native to the area of the former Meymaneh Province in northwestern Afghanistan. The plant is understood as related to Aquilegia moorcroftiana, which has a range spanning into Afghanistan. A. maimanica has pale-blue and white flowers. The species was first described by the Flora Iranica in 1992 from specimens collected by Karl Heinz Rechinger in 1959.

<i>Paraquilegia anemonoides</i> Species of flowering plant

Paraquilegia anemonoides is a species of perennial flowering plant in the family Ranunculaceae. It is native to Central Asia, southwestern Siberia, and the Himalayas. This cushion plant's leaves grows to around 30 mm (1.2 in), with flowering stems reaching 80 mm (3.1 in) tall.

<i>Paraquilegia caespitosa</i> Species of flowering plant

Paraquilegia caespitosa is a species of perennial flowering plant in the family Ranunculaceae. It is native to a range spanning between northern Iran to the western Himalayas. The species has flowers that have purplish red to pink sepals and yellow petals.

<i>Paraquilegia microphylla</i> Species of flowering plant

Paraquilegia microphylla is a species of perennial flowering plant in the family Ranunculaceae. It is native across a range spanning Siberia, Central Asia into the Himalayas, and east to Japan. The species has flowers that vary in color across its range, with P. microphylla in the western Himalayas possessing small white flowers while those in the eastern Himalayas produce larger lilac flowers.

References

  1. 1 2 3 4 5 6 "Isopyrum". Flora of China . Vol. 6. 2001. p. 275–276 via efloras.org.
  2. Drummond, J. R.; Hutchinson, J. (1920). "A Revision of Isopyrum (Ranunculaceae) and Its Nearer Allies". Bulletin of Miscellaneous Information . 1920 (5): 145–169. doi:10.2307/4107428. JSTOR   4107428.
  3. Nold, Robert (2003). Columbines: Aquilegia, Paraquilegia, and Semiaquilegia. Portland, OR: Timber Press. ISBN   0881925888.
  4. "Isopyrum L." Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 27 January 2025.
  5. "Catalogue of Life - 2017 Annual Checklist : Taxonomic tree". www.catalogueoflife.org.
  6. "Catalogue of Life - 2017 Annual Checklist : Search all names". www.catalogueoflife.org. Archived from the original on 2019-07-08. Retrieved 2017-05-30.