Duguetia tobagensis

Duguetia tobagensis
Conservation status
	; Vulnerable (IUCN 3.1)[1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Magnoliids
Order:	Magnoliales
Family:	Annonaceae
Genus:	Duguetia
Species:	D. tobagensis
Binomial name
	Duguetia tobagensis; (Urban) R.E.Fr.
Synonyms
	Alcmene tobagensis Urban

Duguetia tobagensis is a small tree in the plant family Annonaceae which is endemic to Trinidad and Tobago. The species is only known from Tobago.[2]

Description

Dugetia tobagensis is a small tree, the height of which is unknown.[2] The leaves are 6 to 16 centimetres (2.4 to 6.3 in) long and 2.5 to 6.5 centimetres (0.98 to 2.56 in) wide. Flowers are borne among the leaves on inflorescences with 2 to 4 flowers. The petals are cream-coloured, 12–13 millimetres (0.47–0.51 in) long and 4–7 millimetres (0.16–0.28 in) wide. The fruit of the species has never been collected.[2]

Taxonomy

The species was first described as Alcmene tobagensis by German botanist Ignatz Urban in 1921. Urban's description was based on a collection made by Walter Elias Broadway in Tobago in 1912. It was transferred to the genus Duguetia by Robert Elias Fries in 1934.[2]

Duguetia tobagensis is very similar to D. pycnastera. In their 2001 monograph on the genus Duguetia Paul Maas and colleagues expressed doubts as to whether the two plants were actually different species, but preferred to keep the two species separate, at least until collections could be made of the fruit of D. tobagensis.[2]

Distribution

Duguetia tobagensis is known from only four collections, all from Tobago.[3] It was first collected in 1912 by Walter Elias Broadway, a Trinidad-based plant collector and botanist. It was again collected by Broadway in 1914, and then by Kew botanist Noel Yvri Sandwith in 1937.[2] A fourth collection was made in 2000 in the Main Ridge Forest Reserve in Tobago.[3]

Conservation status

Although Duguetia tobagensis is not listed in the IUCN Red List, the authors of a 2008 assessment of the endemic plant species of Trinidad and Tobago considered it a vulnerable species, as it is known from fewer than five localities.[3]

References

Johnson, W.; Oatham, M. & Van den Eynden, V. (2017). "Duguetia tobagensis". IUCN Red List of Threatened Species. 2017: e.T115943903A115969022. doi:10.2305/IUCN.UK.2017-3.RLTS.T115943903A115969022.en.
Maas, Paul J. M.; Lubbert Y. Th. Westra; Lars W. Chatrou (2003). "Duguetia (Annonaceae)". Flora Neotropica. 88: 1–274.
Van den Eynden, Veerle; Michael P. Oatham; Winston Johnson (2008). "How free access internet resources benefit biodiversity and conservation research: Trinidad and Tobago's endemic plants and their conservation status". Oryx. 42 (2): 400–07. doi:10.1017/S0030605308007321.

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[iucn-1] Johnson, W.; Oatham, M. & Van den Eynden, V. (2017). "Duguetia tobagensis". IUCN Red List of Threatened Species. 2017: e.T115943903A115969022. doi:10.2305/IUCN.UK.2017-3.RLTS.T115943903A115969022.en.

[Maas-2] Maas, Paul J. M.; Lubbert Y. Th. Westra; Lars W. Chatrou (2003). "Duguetia (Annonaceae)". Flora Neotropica. 88: 1–274.

[VandenE-3] Van den Eynden, Veerle; Michael P. Oatham; Winston Johnson (2008). "How free access internet resources benefit biodiversity and conservation research: Trinidad and Tobago's endemic plants and their conservation status". Oryx. 42 (2): 400–07. doi:10.1017/S0030605308007321.