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Dracaena bueana 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Liliopsida Liliales Dracaenaceae

Scientific Name: Dracaena bueana Engl.
Taxonomic Notes: The taxonomic status of Dracaena bueana Engl. is not yet resolved. J. J. Bos, the authority on the genus, had no knowledge of this plant until 1984, when Leeuwenburg brought a specimen from Ghana, which at that time was judged to be be either D. fragrans or D. arborea: they cannot be distinguished when sterile. Eventually it flowered and Bos identified it as D. bueana Engl.  Its reproductive characters are intermediate between the two tree species mentioned above, and it may be of hybrid origin, however, the plant is fertile, and produces fruits.

Assessment Information [top]

Red List Category & Criteria: Data Deficient ver 3.1
Year Published: 2017
Date Assessed: 2017-03-15
Assessor(s): Cheek, M.
Reviewer(s): Onana, J.-M.
Facilitator/Compiler(s): Rokni, S.
Justification:
Dracaena bueana Engl. is a tree Dracaena only known from two herbarium specimen collections; collected in 1900 near Buea, Mount Cameroon area, and collected in 1977 near Apam Junction, Ghana. Its taxonomic status is not yet resolved. Its reproductive characters are intermediate between D. fragrans and D. arborea, and it may be of hybrid origin, however, the plant is fertile, and produces fruits. These tree Dracaena cannot be distinguished when sterile and more collections of fertile tree Dracaena are needed if we are to determine whether this species persists on Mt Cameroon.
No up-to-date population data are available for this species and the threats to this species are unknown. Further research on its taxonomic delimitation, ecology and distribution as well as threats are needed before any of the five IUCN criteria can be applied. Therefore it is assessed as Data Deficient.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species has only been recorded at Buea, in the Mount Cameroon area (but possibly no longer exists in this area) and near Apam Junction, Ghana.
Countries occurrence:
Native:
Cameroon; Ghana
Additional data:
Estimated area of occupancy (AOO) - km2:8
Lower elevation limit (metres):10
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:No quantitative population data are available for this species. It is known from only two herbarium specimen collections; Deistel 461, collected in 1900 near Buea, Mount Cameroon, and Leeuwenberg 11101, collected in 1977 near Apam Junction, Ghana. Dracaena bueana has not been identified from the Mount Cameroon area since 1900.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:This species is a tree, and has been recorded at about 50 metres elevation in light secondary forest (Leeuwenberg 11101) and at about 1,000 metres elevation in light forest, in scrub and open spaces, often standing singly (Deistel 461, quoted by Engler in the species protologue, Engler 1924).
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Unknown

Use and Trade [top]

Use and Trade: There is no use/trade information for this species.

Threats [top]

Major Threat(s): The threats to this species are unknown.

Conservation Actions [top]

Conservation Actions: No specific conservation measures or management plan are in place for this species. Further research into the survival and taxonomic delimitation of this species is needed before its conservation status can be assessed. Living seedlings were distributed by J.J. Bos to a number of Botanic Gardens, including Limbe and Ghana.
Collections of fertile tree Dracaena are needed if we are to determine whether this species persists on Mt Cameroon. There is no doubt that the difficulty in making good herbarium specimens of tree Dracaena has deterred most plant collectors from collecting what is all to easily assumed to be Dracaena arborea.

Citation: Cheek, M. 2017. Dracaena bueana. The IUCN Red List of Threatened Species 2017: e.T39561A110071284. . Downloaded on 13 December 2017.
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