Mischogyne

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Mischogyne
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Magnoliales
Family: Annonaceae
Genus: Mischogyne
Exell

Mischogyne is a genus of plants in the family Annonaceae. It comprises five species distributed in Angola, Cameroon, Gabon, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Nigeria, Sierra Leone, Democratic Republic of the Congo. [1] Arthur Wallis Exell the British botanist who first formally described the genus named it after the stalks (μίσχος, míschos, in Greek) that bears its reproductive (γυνή, gunḗ, in Greek) structures. [2] [3]

Contents

Description

Mischogyne are bushes or small trees. Their trunks are straight or branching from the base. They have elliptical to oval leaves that are arranged in an alternate phyllotaxy. The leaves are paper to leathery with a dark green upper surface and a lighter green underside. The leaves can be hairless or covered in fine downy hairs. Their inflorescences have 1-2 flowers and are extra-axillary or terminal. Their flowers have both male and female reproductive structures. Their flowers have 3 sepals that either touch one another at their margins, or are fused until anthesis. Their flowers have 6 white, oval petals arranged in two rows of three. In the flowers, the receptacles form columns that bear stamens at their base and carpels at their apex. Each flower has numerous stamens that are arranged in a spiral phyllotaxy. The stamens have little or no filament, are linear, and deshisce laterally. The thecae extend along nearly the entire length of the stamen. The connective tissue between the thecae can be hairless or covered in fine downy hairs, and can sometimes terminate in a tuft of hairs at the apex of the stamen. The flowers have 3-40 cylindrical or oval carpels that are densely covered in fine downy hairs. The styles are short. The stigmas have two lobes. The carpels have numerous ovules. The fruit can be round, ellipsoidal or oblong and either hairless or covered in fine downy hairs. The fruit can be smooth or ribbed. The fruit have 3-12 seeds per carpel. The seeds are flat ellipsoids. [2]

Species

Species include:

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Mitrephora macrocarpa is a species of plant in the family Annonaceae. It is native to Sulawesi. Friedrich Anton Wilhelm Miquel, the Dutch botanist who first formally described the species using the basionym Orophea macrocarpa, named it after its large fruit.

<i>Mitrephora tomentosa</i> Species of plant in the family Annonaceae

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<i>Mischogyne elliotiana</i> Species of plant

Mischogyne elliotiana is a species of plant in the Annonaceae family. It is native to Cameroon, Gabon, Ghana, Guinea-Bissau, Ivory Coast, Liberia, Nigeria, Sierra Leone, and Zaire. Adolf Engler and Ludwig Diels, the German botanists who first formally described the species using the basionym Uvaria elliotiana, named it after George Scott-Elliot the botanist who collected the specimen they examined.

<i>Monodora angolensis</i> Species of plant in the family Annonaceae

Monodora angolensis is a species of plant in the family Annonaceae. It is native to Angola, Cameroon, Central African Republic, Democratic Republic of the Congo, Equatorial Guinea, Gabon, Ivory Coast, Nigeria, Republic of the Congo, Sudan, Tanzania, Uganda, Zambia and Zaire. Friedrich Welwitsch, the Austrian botanist who first formally described the species, named it after Angola where he found it growing near the town of Pungo-Andongo.

<i>Neostenanthera myristicifolia</i> Species of plant in the family Annonaceae

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<i>Pseuduvaria costata</i> Species of plant in the family Annonaceae

Pseuduvaria costata is a species of plant in the family Annonaceae. It is native to New Guinea. Rudolph Scheffer, the Dutch botanist who first formally described the species using the basionym Orophea costata, named it after its prominently ribbed fruit.

<i>Pseuduvaria villosa</i> Species of plant in the family Annonaceae

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<i>Uvariastrum insculptum</i> Species of flowering plant

Uvariastrum insculptum is a species of plant in the Annonaceae. It is native to Cameroon, Gabon, Ghana, Ivory Coast, Liberia, Nigeria, and the Republic of the Congo. Adolf Engler and Ludwig Diels, the botanists who first formally described the species using the basionym Uvaria insculpta, named it after the secondary veins on its leaves which are distinctly sunken.

References

  1. "Mischogyne Exell". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved September 16, 2019.
  2. 1 2 Gosline, George; Marshall, Andrew R.; Larridon, Isabel (2019). "Revision and new species of the African genus Mischogyne (Annonaceae)" (PDF). Kew Bulletin. 74 (2). doi: 10.1007/s12225-019-9804-7 . ISSN   0075-5974. S2CID   195773945.
  3. Exell, A.W. (1932). "Mr. John Gossweiler's plants from Angola and Portuguese Congo. Dicotyledones: Polypetalae". Journal of Botany, British and Foreign. 70 (Supplement 1): 213.