Mischogyne elliotiana explained

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.[1] 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.[2]

Description

It is a bush reaching 4-7 meters in height. Its elliptical leaves are 8-17 by 4-8 centimeters. Its hairless leaves are wedge shaped at their point of attachment and come to a long tapering point at their tips. The leaves have a papery to leathery texture and are glossy green on their upper side and lighter on their underside. The leaves have 7-13 pairs of secondary veins emanating from either side of their midribs. Its hairless petioles are 5-7 millimeters long. Its flowers are solitary or in groups of 2-4. The flowers are on 0.7-1.5 centimeter pedicels that are covered in fine hairs and occur in axillary positions. The pedicels are subtended by a small bract. Its oblong sepals are 10 by 3.5-4 millimeters, covered in fine hairs on both sides, and come to a shallow point at their tips. Its flowers have 6 white petals arranged in two rows of three. The outer, oblong petals are 15 by 3-4 millimeters, and covered in woolly hairs on both sides. The inner petals are slightly shorter. Its flowers have cylindrical receptacles that are 3-4 millimeters long. Its flowers have numerous oblong stamens that are 2-2.5 millimeters long. The tissue that connects the theca is hairy an terminates in a tuft of hairs at the top of the anthers. Its flowers have 4-5 oblong, carpels that are 5-7 millimeters long and covered in hairs. Its stigmas are bilobed. The carpels contain numerous ovules in two rows. Its are green to yellow with white spots, 6-10 by 4-6 centimeters, and have a contour that is constricted around the seeds. Its fruit have 6-12 seeds that are 2-2.8 by 1.2-1.5 by 0.3-0.5 centimeters, arranged in 1 or two rows. The seeds are flat on one side, semi-circular on the opposite side, and covered in a white membrane.[3] [4]

Reproductive biology

The pollen of M. elliotiana is shed as permanent tetrads.[5]

Habitat and distribution

It has been observed growing in evergreen or semideciduous forests that receive 100-400 centimeters of rain per year.[4]

Uses

Gosline and colleagues report the white flesh of the fruits as being edible.[4]

Notes and References

  1. Web site: Mischogyne elliotiana (Engl. & Diels) R.E.Fr. ex Le Thomas . . n.d. . Plants of the World Online . The Trustees of the Royal Botanic Gardens, Kew . September 9, 2019.
  2. Book: Engler, Adolf . 1901 . Anonaceae. Bearbeiter von A. Engler und L. Diels . Monographien afrikanischer Pflanzen-Familien und -Gattungen . http://sammlungen.ub.uni-frankfurt.de/botanik/periodical/titleinfo/4074692 . German, Latin . 6 . Leipzig . Engelmann . 30 .
  3. Le Thomas . Annick . 1969 . Mischogyne . Flore du Gabon . 16 . 284–287.
  4. Gosline. George. Marshall. Andrew R.. Larridon. Isabel. Revision and new species of the African genus Mischogyne (Annonaceae). Kew Bulletin. 74. 2. 2019. 0075-5974. 10.1007/s12225-019-9804-7. free.
  5. Book: Knox . R.B. . McConchie . C.A. . Blackmore . S. . Ferguson . I.K. . Pollen and Spores Form and Function . Academic Press . 1986 . 265–282 . Structure and function of compound pollen . 0-12-103460-7.