Viburnum divaricatum Benth. (1844:132)
Taxonomy & Nomenclature
Synonym/s: Oreinotinus divaricatus (Benth.) Oerst. in Vidensk. Meddel. Naturhist. Foren. Kjøbenhavn 1860: 287 (1860 or 1861*)
* Publication date disputed. Given as 1860 by IPNI (2023), and 1861 by POWO (2023).
Conservation Status
Last record: before 1844 (León-Yánez & Pitman, 2003)
Rediscovered in: 1943 (cf. Herbario Virtual Austral Americano) or pre-2002 (León-Yánez et al., 2011:79)
IUCN RedList status: Critically Endangered (Possibly Extinct)
Considered to be known only from the pre-1844 type material from Ecuador (Valencia et al., 2000; León-Yánez & Pitman, 2003) and to be missing ("Critically Endangered (Possibly Extinct)") by (León-Yánez & Pitman, 2003), but POWO (2023) gives its distribution as encompassing both Ecuador and Peru implying that further collections or observations have been made. Although León-Yánez et al. (2011:79) notes that one supposed collection from Peru (Hutchinson 1133) cannot be verified because no herbarium is given for the specimen in order to confirm its identification. While the Herbario Virtual Austral Americano lists 13 occurences including 12 after the type collection beginning with one in 1943 thus being at least 100 years after the last collections and thus potentially qualifying as rediscovered. It has subsequently been recorded in Ecuador in 2001 (or before) (León-Yánez et al., 2011:79). I do not have access to (López, 2003) which would help shed light on the species' conservation status.
Distribution
El Oro province, Ecuador (& Peru?)
Stated as being endemic to Ecuador by (León-Yánez & Pitman, 2003), but POWO (2023) includes Peru in its distribution. Although León-Yánez et al. (2011:79) notes that one supposed collection from Peru (Hutchinson 1133) cannot be verified because no herbarium is given for the specimen in order to confirm its identification.
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Bentham, George. (1844 [1839-1857]). Plantas Hartwegianas: imprimis mexicanas adjectis nonnullis Grahamianis enumerat novasque. Londini.
Other references:
IPNI. (2023). Viburnum divaricatum Benth. International Plant Names Index. Published on the Internet https://www.ipni.org, The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Herbarium. [Retrieved 11 November 2023].
Jørgensen, P. M. and León-Yánez, S. (eds.). (1999). Catalogue of the Vascular Plants of Ecuador. Monographs in Systematic Botany from the Missouri Botanical Garden 75: i-viii, 1-1181. Missouri Botanical Garden.
Killip, E. P. and Smith, A. C. (1930). The South American Species of Viburnum. Bulletin of the Torrey Botanical Club 57(4): 245-258 [248,256]. https://doi.org/10.2307/2480617
León-Yánez, S. and Pitman, N. (2003). Viburnum divaricatum. The IUCN Red List of Threatened Species 2003: e.T43570A10812113. https://dx.doi.org/10.2305/IUCN.UK.2003.RLTS.T43570A10812113.en. Downloaded on 27 December 2015.
León-Yánez, Susana, Valencia, Renato, Pitman, Nigel, Endara, Lorena, Ulloa Ulloa, Carmen and Navarrete, Hugo (eds.). (2011). Libro rojo de las plantas endémicas del Ecuador, 2ª edición. Publicaciones del Herbario QCA, Pontificia Universidad Católica del Ecuador, Quito. 957 pp. [WARNING: 194MB file]
López, José Homero Vargas. (2003). Taxonomic Revision of Viburnum (Adoxaceae) in Ecuador. MSc thesis, University of St. Louis.
López, José Homero Vargas and Jørgensen, Peter Møller. (2017). Two New Species of Viburnum (Viburnaceae) from the Tropical Andes. Novon: A Journal for Botanical Nomenclature 25(4): 489-496. https://doi.org/10.3417/D-16-00001
POWO. (2023). Viburnum divaricatum Benth. Plants of the World Online (online resource). Royal Botanic Gardens, Kew, United Kingdom. Available at: https://powo.science.kew.org/ [Accessed 11 November 2023]
Valencia, R., Pitman, N., León-Yánez, S. and Jørgensen, P. M. (eds). (2000). Libro Rojo de las Plantas Endémicas del Ecuador 2000. Publicaciones del Herbario QCA, Ponticicia Universidad Católica del Ecuador, Quito.