| Nymphaea guineensis | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Order: | Nymphaeales |
| Family: | Nymphaeaceae |
| Genus: | Nymphaea |
| Species: | N. guineensis |
| Binomial name | |
| Nymphaea guineensis Schumach. & Thonn. [2] | |
| Synonyms [2] | |
| |
Nymphaea guineensis is a species of waterlily native to the region spanning from tropical West Africa to Chad. [2]
The leaves are 22 cm long, and 19 cm wide. [3] The leaves have an entire margin. [4] The abaxial leaf surface displays reddish colouration. [5] [3]
The flowers are 13 cm wide. The petals are purple and pointed. [3] The globose, smooth fruit bears numerous subglobose, arillate seeds. [5]
It was first described by Heinrich Christian Friedrich Schumacher and Peter Thonning in 1827. [2]
The type specimen was collected by Thonning in Ghana. Insects have damaged the preserved specimen. [6]
It is placed in Nymphaea subgenus Brachyceras. [7]
The specific epithet guineensis means "from Guinea". [8]
In Togo, Nymphaea guineensis occurs in ponds. [9] In Nigeria, it has been observed in temporary, shallow, bright, aquatic habitats, which are less than 50 cm deep, and dry out in between the rainy seasons. [10] In Chad, it has also been observed in deep waters. [11] In North Chad, a prosperous population has been observed in a semi-desert region. [12]
In the Ivory Coast, the cooked seeds are eaten. [13]
The Aïr Mountains or Aïr Massif is a triangular massif, located in northern Niger, within the Sahara. Part of the West Saharan montane xeric woodlands ecoregion, they rise to more than 1,800 m (5,900 ft) and extend over 84,000 km2 (32,000 sq mi). Lying in the midst of desert north of the 17th parallel, the Aïr plateau, with an average altitude between 500 and 900 m, forms an island of Sahel climate which supports a wide variety of life, many pastoral and farming communities, and dramatic geological and archaeological sites. There are notable archaeological excavations in the region that illustrate the prehistoric past of this region. The endangered African wild dog once existed in this region, but may now be extirpated due to human population pressures in this region.
Nicaise Auguste Desvaux was a French botanist.
The hybrid elm cultivar Ulmus × hollandica 'Modiolina', or Wheel-hub elm, was probably the large-leaved 'Orme tortillard' first described by Duhamel in De l'exploitation des bois (1764). Poederlé (1774) identified the tree as the 'orme maigre' growing in the region that later became part of Belgium. Dumont de Courset described a small-leaved U. campestris var. modiolina, "l'orme tortillard" in 1802 – the first use of the name 'Modiolina'. 'L'orme Tortillard', also known as 'l'orme à moyeux', was considered in France to be the best elm for use by wheelwrights, its timber especially suitable for hubs of wheels. Van Houtte marketed an U. campestris modiolina (tortuosa), and Späth an U. campestris modiolina, from the late 19th century. U. campestris var. modiolinaHort was confirmed as a hybrid by Chevalier in Les Ormes de France (1942) and called U. × 'Modiolina', 'l'orme à moyeux'.
Auguste Jean Baptiste Chevalier was a French botanist, taxonomist, and explorer of tropical Africa, especially of French colonial empire in Africa that included Côte d'Ivoire. He also explored and collected plants in South America and tropical Asia. Chevalier was a prolific contributor to the knowledge of African plants, studying forest trees and their woods, grasses, and agricultural plants of the continent. Unlike other botanists who studied the plants of tropical Africa, Chevalier also ranged to the floral regions of the Sahara.
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Ulmus glabra 'Pyrenaica' is a local cultivar of the Wych Elm, described as Ulmus pyrenaica, the Pyrenees Elm, by de Lapeyrouse in Supplément à l'Histoire abrégée des plantes des Pyrénées (1818), from trees in the Port [:pass] de la Picade in the Basses-Pyrenees. Chevalier added a further description in 'Les Ormes de France' (1942), and a second provenance in the nearby Bagnères-de-Luchon area. Herbarium specimens are held in the Muséum national d'histoire naturelle in Paris, where U. campestris var. montana latifolia is given as a synonym.
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Henri Stehlé was a French agronomist, botanist and ecologist specialized in tropical agriculture. In 1949 he founded the Agronomic Research Center of INRA Antilles-Guyane in Guadeloupe, of which he was Director until 1964. As botanist he worked mainly in Guadeloupe and Martinique in collaboration with his wife, Madeleine Stehlé, and Reverend Father Louis Quentin. Stehlé focused his work on two plant families: Orchidaceae and Piperaceae. The abbreviation Stehlé is used to indicate Henry Stehlé as the authority for many plant names.
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