What is this Tree?
Milettia Sacleuxii, more commonly known as Sacleux’s wisteria, is a tree with a
length 10 metres or taller. It has a small native range, classified as ‘vulnerable’ in the IUCN
Red List of Threatened Species (Ajna Fern, et al. 2011).
The Millettia Sacleuxii is a rare and ecologically significant tree species in regards to
climate and ecosystem biodiversity, as it is a ‘hotspot’ for unique lifeforms. It is found in the
Eastern Arc forests of Tanzania, in the Nguru and Usambara Mountains. As it was
previously feared extinct, it is currently undergoing restoration efforts due to its value within
ecosystem recovery and biodiversity conservation specifically aimed at restoring degraded
forests.
Millettia is a genus of plant known for producing various chemicals, particularly
Isoflavonoids (plant-derived helpful chemicals which are common within soy and are known
for estrogen-like benefits) and Rotenoids (natural toxins, bad for a person’s health). The
former supports cancer prevention and alleviates menopause symptoms. Meanwhile, the latter
consists of incredibly complex structures with powerful fish-poisoning properties, commonly
used as natural pesticides. (ScienceDirect, 2024)
M.sacleuxii is a member of the legume family which means that the tree can highly
improve soil health through nitrogen fixation, assisting in land reclamation and soil
enrichment. It also contributed to climate change mitigation through its carbon fixation in the
forest ecosystem.
The collection of thousands of seeds from surviving trees has allowed conservationists to
raise seedlings for planting in degraded habitats, directly assisting in restoring biodiversity in
the Nguru Mountains. (The Diplomatic Affairs, 2024).
This rare tree was feared extinct due to extensive habitat destruction, with only six
known specimens recorded before 1955. The tree is popularly used in timber plantations and
even though it served various benefits, the public disregarded habitat factors leading the
species to be often vulnerable and easily impacted by environmental changes. Then as if a
miracle, the wisteria was rediscovered in July 2023 when two remaining “mother trees” were
found in the Nguru Mountains.
This brings light to another issue.
Deforestation is harmful. It destroys habitats, threatening 80% of land species. It
drives climate change by creating and releasing stored carbon, and disrupts important water
cycles. It also leads to extreme temperature swings due to greenhouse gasses, and soil erosion
which threatens the livelihood of local communities that depend on forests.
We can reduce paper/mean consumption through reduce, reuse, recycle. Promote
sustainable products such as FSC for wood and RSPO for palm oil as they are not linked to
deforestation. (National Geographic, 2025).
Writer: Amelia Kacprzak
Editor: Ivy Tran
Bibliography
– Truscott, R. (July 16, 2024). 'Extinct' trees found in Tanzania spark hope for ecosystem recovery.
cosystem-recovery/#:~:text=Conservationists%20in%20eastern%20Tanzania%20have,the%20Nguru
%20and%20Usambara%20mountains.
– Daniel Buginza, Abiy Yenesew. (2020. Flavonoids and Isoflavonoids of and: Phytochemical review
and chemotaxonomic values. ScienceDirect, MILLETTIA.
Millettia%20is%20defined%20as%20a,Millettia%20dura%20and%20Millettia%20ferruginea.
– National Geographic, (N/D). Why deforestation matters-and what we can do to stop it. The National
Geographic.
orestation,animals%20in%20their%20natural%20habitats)
– The Diplomatic Affairs, (August 1, 2024). Rediscovery of Millettia sacleuxii: Hope for
Conservation in Eastern Tanzania. TheDiplomaticAffairs.
ation-in-eastern-tanzania/
– Tropical.the.ferns. Useful TROPICAL Plants. (N/D). Milettia sacleuxii, General information,
– Truscott, R. (July 16, 2024). 'Extinct' trees found in Tanzania spark hope for ecosystem recovery.
cosystem-recovery/#:~:text=Conservationists%20in%20eastern%20Tanzania%20have,the%20Nguru
%20and%20Usambara%20mountains.
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