Monodora myristica
Monodora myristica | |
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![]() | |
Illustration from Curtis's Botanical Magazine, 1831 | |
Conservation status | |
![]() Least Concern (IUCN 3.1)[1] | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Magnoliids |
Order: | Magnoliales |
Family: | Annonaceae |
Genus: | Monodora |
Species: | M. myristica |
Binomial name | |
Monodora myristica (Gaertn.) Dunal | |
Synonyms[2] | |
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Monodora myristica, the calabash nutmeg or African nutmeg,[1] is a tropical tree of the family Annonaceae or custard apple family of flowering plants. It is native to tropical Africa from Sierra Leone in the west to Tanzania.[1][3] In former times, its seeds were widely sold as an inexpensive nutmeg substitute. This is now less common outside its region of production.[4] Other names of calabash nutmeg include Jamaican nutmeg, ehuru, ariwo, awerewa,[5] ehiri, airama, African orchid nutmeg, muscadier de Calabash and lubushi.[4][6]
Cultivation and history
The calabash nutmeg tree grows naturally in evergreen forests from Liberia to Nigeria and Cameroon, Ghana, Angola and also Uganda and west Kenya.[6] Due to the slave trade in the 18th century, the tree was introduced to the Caribbean islands where it was established and become known as Jamaican nutmeg. In 1897, Monodora myristica was introduced to Bogor Botanical Gardens, Indonesia, where the trees flower on a regular basis but no fruit could yet be collected. Due to its large and orchid-like flowers, the tree is also grown as an ornamental.[6]
Botany
Tree and leaves
Monodora myristica can reach a height of 35 m (115 ft) and 2 m (6 ft 7 in) in diameter at breast height (DBH). It has a clear[clarification needed] trunk and branches horizontally. The leaves are alternately arranged and drooping with the leaf blade being elliptical, oblong or broadest towards the apex and tapering to the stalk. They are petiolate and can reach a size of up to 45 cm × 20 cm (17.7 in × 7.9 in).[6]
Flower
The flower appears at the base of new shoots and is singular, pendant, large and fragrant. The pedicel bears a leaf-like bract and can reach 20 cm (7.9 in) in length. The flower’s sepals are red-spotted, crisped and 2.5 cm (0.98 in) long. The corolla is formed of six petals of which the three outer reach a length of 10 cm (3.9 in) and show curled margins and red, green and yellow spots. The three inner petals are almost triangular and form a white-yellowish cone which on the outside is red-spotted and green on the inside. The flower’s stigmas become receptive before its stamens mature and shed their pollen (protogynous). Its pollen is shed as permanent tetrads.[7] The flower is pollinated by insects.[6]
Fruit and seeds
![](http://upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Monodora_myristica_seeds.png/220px-Monodora_myristica_seeds.png)
The fruit is a berry of 20 cm (7.9 in) diameter and is smooth, green and spherical and becomes woody. It is attached to a long stalk which is up to 60 cm (24 in) long. Inside the fruit the numerous oblongoid, pale brown, 1.5 cm (0.59 in) long seeds are surrounded by a whitish fragrant pulp. The seeds contain 5-9% of a colourless essential oil.[6]
Uses
Fruit and seeds
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Wikibooks-logo-en-noslogan.svg/40px-Wikibooks-logo-en-noslogan.svg.png)
- Calabash Nutmeg
The odour and taste of the Monodora myristica seed is similar to nutmeg and it is used as a popular spice in the West African cuisine.[4] The fruits are collected from wild trees and the seeds are dried and sold whole or ground to be used in stews, soups, cakes and desserts.[4][6] For medicinal purposes they are used as stimulants, stomachic, for headaches, sores and also as insect repellent. The seeds are also made into necklaces.[6]
Timber and bark
Monodora myristica timber is hard but easy to work with and is used for carpentry, house fittings and joinery. In medicine, the bark is used in treatments of stomach-aches, febrile pains, eye diseases and haemorrhoids.[6]
Chemical compounds
The essential oil that can be obtained from the leaves contains β-caryophyllene, α-humulene and α-pinene. The major compounds found in the essential oil from the seeds are α-phellandrene, α-pinene, myrcene, limonene and pinene.[8]
References
- ^ a b c Cosiaux, A.; Couvreur, T.L.P. & Erkens, R.H.J. (2019). "Monodora myristica". IUCN Red List of Threatened Species. 2019: e.T132683482A133046260. Retrieved 13 November 2023.
- ^ "Monodora myristica (Gaertn.) Dunal". World Checklist of Selected Plant Families. Royal Botanic Gardens, Kew. Retrieved 18 April 2017 – via The Plant List. Note that this website has been superseded by World Flora Online
- ^ "Monodora myristica (Gaertn.) Dunal". Plants of the World Online. The Trustees of the Royal Botanic Gardens, Kew. n.d. Retrieved April 17, 2019.
- ^ a b c d Celtnet Recipes. "Calabash Nutmeg Information Page". Archived from the original on 16 July 2011. Retrieved 4 May 2011.
- ^ Burkill, H.M. (1985). The useful plants of West tropical Africa (Ed. 2. ed.). Kew: Royal Botanic Gardens. ISBN 978-0-947643-01-0.
- ^ a b c d e f g h i Weiss, E.A. (2002). Spice Crops. Oxon: CABI Publishing. pp. 102–103. ISBN 978-0-85199-605-9.
- ^ Couvreur, Thomas L. P.; Botermans, Marleen; van Heuven, Bertie Joan; van der Ham, Raymond W. J. M. (2008). "Pollen morphology within the Monodora clade, a diverse group of five African Annonaceae genera". Grana. 47 (3): 185–210. doi:10.1080/00173130802256913. ISSN 0017-3134.
- ^ Fournier, G.; et al. (1999). "Annonaceae essential oils: a review". Journal of Essential Oil Research. 11 (2): 131–142. doi:10.1080/10412905.1999.9701092.
External links
- Recipe for West African 'Fish Rub' incorporating Calabash Nutmeg
- Recipe for Nigerian 'Isi Ewu' (Goat Stew) incorporating Ehuru
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