Manilkara lososiana Kenfack & Ewango

This species is accepted, and its native range is Cameroon.

[KBu]

Kenfack, D., Corneille E. N. Ewango, & Thomas, D. (2004). Manilkara lososiana, a New Species of Sapotaceae from Cameroon. Kew Bulletin, 59(4), 609-612. doi:10.2307/4110920

Conservation
Although several botanical surveys have been carried out in the southern part of the Korup National Park and many more in Southwestern Cameroon in general, the new species has not been found elsewhere. It is not only rare in Cameroon but is also narrowly endemic to the Korup National Park and rare locally. Only one population with two adult trees and fifteen saplings is known, of which one sapling occurs in the 50 ha Korup Forest Dynamics Plot. Current information shows that the population size of this species is fewer than 50 mature individuals. We therefore assess M. lososiana as critically endangered CR D using the IUCN categories and criteria (IUCN 2001). However, the area where it is found is still very poorly known botanically, so future inventory may change this assessment.
Ecology
Manilkara lososiana Kenfack & Ewango is so far known only from lowland evergreen forest in the southern part of the Korup National Park in Cameroon, at an altitude of about 180 m. The mean maximum annual temperature is 30.60C and mean annual rainfall exceeds 5000 mm (Chuyong et al. 2004). Letouzey (1985) describes the area as dominated by Biafran coastal forest. Letouzey mapped the forest vegetation types found in Korup as widespread along the Cameroon coast, but research by D. W. Thomas (cited in Chuyong et al. 2004) shows that the forests of the southern Korup area are a unique type, dominated by Oubanguia alata Baker f. (Lecythidaceae) and limited to a small area in Southwest Cameroon and Southeast Nigeria with very high seasonal rainfall. The uniqueness of this forest environment may explain the presence of the numerous narrowly endemic taxa that are being discovered there.
Morphology General Habit
Tree to 35 m tall, bole straight, 40 cm diameter; bark grey-brown, longitudinally fissured
Morphology Leaves
Leaves spirally arranged, clustered at shoot apex; stipules triangular, coriaceous, persistent, 4 - 7 mm long, to 2 mm wide at base, shortly ferrugineous-tomentulose; petiole 5 - 15 mm long, rather stout, pulvinate at the base, tomentulose; blade coriaceous, completely glabrous and glaucous above, covered with ferrugineous- tomentulose scales to glabrescent beneath, obovate to oblong-elliptic, 4.5 - 20.0 x 1.5 - 7.5 cm, apex rounded with a short, broad acumen, 0.2 - 0.5(- 1.0) cm long; midrib impressed and glabrous above, prominent and dark-brown pubescent beneath; secondary veins 12 - 20, occasionally more, brochidodromous, visible but not conspicuous, spreading from costa at angle of 60°, looping about 1 mm from margin, slightly impressed on both surfaces; intersecondary nerves 1 to 3 between each pair of secondaries, parallel
Morphology Reproductive morphology Flowers
Flowers with slender pedicels 1.9 - 3.0 cm long, not or hardly elongating in fruit, shortly ferrugineous- tomentulose; calyx of six sepals arranged in 2 whorls of 3, shortly brown-tomentulose outside, glabrous inside, those of outer whorl 4 - 6 x 3 mm wide, those of inner whorl to 6 x 1 mm, persistent in fruit; corolla whitish, glabrous, sweet-scented when fresh, drying reddish-brown, petals 6, united at the base into a short tube about 1 mm long, petals deeply 3- lobed, lateral lobes oblong, 4 - 5.3 x 1 - 1.7 mm, median lobe generally less developed, erect, about 4 x 0.6 mm, clawed; stamens 6, glabrous, in a single whorl, united basally with the staminodes and forming a ring that is united with the corolla tube, filaments c. 2 mm long, about twice as long as anthers, anthers to 1 mm long, sagittate at base, apiculate at apex; staminodes 6, alternating with and shorter than the stamens, about 3 mm long, laciniate, and sometimes more deeply divided into two laciniate lobes; ovary globose to conical, 1.0 - 1.5 mm long, pilose, attenuated into an exserted, glabrous, persistent white style c. 4 mm long; stigma punctiform
Morphology Reproductive morphology Fruits
Fruit (immature) oblong, with an apiculus formed by the persistent style and with the persistent sepals at the base, 1.0 - 2.5 cm long, 0.9 - 1.5 cm thick, densely ferrugineous-tomentulose; seeds unknown.
Morphology Reproductive morphology Inflorescences
Inflorescence fasciculate, in axils of leaves or fallen leaves, (1 -)4 - 8 flowered
Note
Manilkara lososiana is dedicated to Elizabeth Losos, Director of the Center for Tropical Forest Science of the Smithsonian Tropical Research Institute and a Principal Investigator of the Korup Forest Dynamics Plot Program.
Type
Cameroon, Southwest Province, Korup National Park, Kenfack 625 (holotypus YA; isotypi SCA, MO, K).

Native to:

Cameroon

Manilkara lososiana Kenfack & Ewango appears in other Kew resources:

Date Reference Identified As Barcode Type Status Has image?
Nov 12, 2014 Thomas, D.W. [1031], Cameroon 43471.000 No
Nov 12, 2014 Thomas, D.W. [1031], Cameroon K000029745 No
Jun 1, 2007 Burgt, X.M. van der [949], Cameroon K000460382 No
May 1, 2005 Burgt, X.M. van der [665], Cameroon K000338958 No
May 1, 2005 Burgt, X.M. van der [665], Cameroon K000338967 No

First published in Kew Bull. 59: 609 (2004)

Accepted by

  • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.

Literature

Kew Bulletin

  • --- (1964). Flore du Cameroun vol. 2. Sapotacées. Muséum National d'Histoire Naturelle. Paris.
  • Aubréville, A. (1961). Flore du Gabon vol. 1. Sapotacées. Muséum National d'Histoire Naturelle, Paris.
  • Chuyong, G. B., Condit, R., Kenfack, D., Losos, E., Sainge, M., Songwe, N. C. & Thomas, D. W. (2004). Korup Forest Dynamics Plot, Cameroon. In: E. C. Losos & E. G. Leigh Jr. (eds.), Forest Diversity and Dynamism: Findings from a Large- Scale Plot Network: 506-516. University of Chicago Press, Chicago.
  • Ewango, C. E. N. & Breteler, F. J. (2001). Présence du genre Pradosia (Sapotaceae) en Afrique: description d'une nouvelle espèce. Adansonia 23 (1): 147 - 150.
  • Gautier, L. (1997). Sapotaceae. In: J. P. Lebrun & A. Stork (eds.), Enumération des plantes à fleurs d'Afrique tropicale 4: Gamopetales: Ericaceae a Lamiaceae: 25 - 49. Conservatoire et Jardins botaniques de la Ville de Genève.
  • Gereau, R. E. & Kenfack, D. (2000). Le genre Uvariopsis (Annonaceae) en Afrique tropicale, avec la description d'une espèce nouvelle du Cameroun. Adansonia 22 (1): 39 - 43.
  • IUCN (2001). IUCN Red List Catergories and Criteria: version 3.1. IUCN Species Survival Commission. IUCN, Gland, Switzerland & Cambridge, U.K.
  • Letouzey, R. (1985). Carte Phytogéographique du Cameroun, 1:500 000. Institut de la Carte Internationale de la Végétation, Toulouse, France.
  • Sonké, B., Kenfack, D. & Robbrecht, E. (2002). A new species of the Tricalysia atherura group (Rubiaceae) from southwestern Cameroon. Adansonia 24 (2): 173-177.

  • Herbarium Catalogue Specimens

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    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

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  • Kew Names and Taxonomic Backbone

    The International Plant Names Index and World Checklist of Selected Plant Families 2022. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0