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Bothalia - African Biodiversity & Conservation

On-line version ISSN 2311-9284
Print version ISSN 0006-8241

Bothalia (Online) vol.51 n.2 Pretoria  2021 



Validation of two previously described species of Annesorhiza



Anthony R. MageeI, II

ICompton Herbarium, South African National Biodiversity Institute, Private Bag X7, 7735 Claremont, Cape Town, South Africa
IIDepartment of Botany and Plant Biotechnology, University of Johannesburg, P.O. Box 524, Auckland Park 2006, Johannesburg, South Africa





Two species of Annesorhiza, A. laticostata Magee and A. radiata Magee, are here validated with reference to the previously and effectively published descriptions and diagnoses.

Keywords: Annesorhiza laticostata; Annesorhiza radiata; Greater Cape Floristic Region; new species; nomenclature; South Africa.




Annesorhiza Cham. & Schltdl. (Apiaceae) is a South African endemic genus centred in the Greater Cape Floristic Region (Magee et al. 2012; Magee 2013; Van Wyk et al. 2013). Twelve species were recognised in the last revision of the genus by Tilney and Van Wyk (2001), but the number of species has since nearly doubled to 22 species (Magee & Manning 2010; Van Wyk & Tilney, 2010; Magee et al. 2011; Magee 2015). A large addition to the genus came as a result of the re-assessments of the polymorphic genus Peucedanum L. in Africa (Winter et al. 2008). The African species of Peucedanum have been shown to be only distantly related to the type of the genus and subsequently accommodated in seven genera (Winter et al. 2008; Magee et al. 2011). Two of these, Peucedanum filicaule (Eckl. & Zeyh.) B-E.van Wyk & Tilney and P. triternatum Eckl. & Zeyh., together with five undescribed but closely related species, were as such transferred to Annesorhiza by Magee et al. (2011) based on morphological (fruit with a narrow commissure and leaves hysteranthous (Vessio 2001)) as well as molecular sequence data (Calviño et al. 2006). The validity of two of the five new species described within the Annesorhiza triternata group by Magee et al. (2011) have since been brought into question. The type collection for both species were made when the plants were in their reproductive phase with inflorescences and fruit evident, but vegetatively sterile. Subsequently, leaf material was added to these collections in the spring of the same year and indicated as such on the specimen label. In the type citation of these two species (Magee et al. 2011) more than one gathering was inadvertently indicated by the inclusion of a statement that the leaf collections had been added to the reproductive collections, without specifically excluding them, rendering the names invalid (ICBN Art. 40.2, Turland et al. 2018). These two names are therefore validated here with reference to the previously and effectively published descriptions and diagnoses (ICBN Art. 38.1, Turland et al. 2018).



Annesorhiza laticostata Magee sp. nov. Annesorhiza laticostata Magee nom. inval., Systematic Botany, 36(2): 513 (2011). Type: SOUTH AFRICA. Western Cape, Worcester (3319): Hills between the Breede River and the Brandvlei Dam, S of Worcester next to the road to Rawsonville (-CB), 15 February 2010, Magee & Le Roux 188 (excluding leaves, added on 16 August 2010) (NBG-NBG0266670!, holo.; K-K000975897!, NBG- NBG1460469!, PRE-PRE0998616!, iso.).

Annesorhiza radiata Magee, sp. nov. Annesorhiza radiata Magee nom. inval., Systematic Botany, 36(2): 514 (2011). Type: South Africa. Western Cape, Worcester (3319): Worcester, Karoo Desert National Botanical Garden, clay soils near the bottom of the reserve (-CB), 20 April 2010, Magee 242 (excluding leaves, added on 16 August 2010) (NBG-NBG0266683!, holo.; K-K000975895!, NBG- NBG0266671!, PRE-PRE0998615!, iso.).



This work is based on research supported by the National Research Foundation of South Africa (Grant Number 90646).


Competing interests

The author declares that he has no financial or personal relationship(s) that may have inappropriately influenced him in writing this article.



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Magee, A.R., 2013, 'Apiaceae', In: Snijman, D.S. (ed.), Plants of the Greater Cape Floristic Region II: The Extra Cape Flora, Strelitzia 30. South African National Biodiversity Institute, Pretoria, pp. 243-248.         [ Links ]

Magee, A.R., 2015, 'Annesorhiza articulata (Apiaceae): a new, highly threatened species from the Western Cape, South Africa', South African Journal of Botany 96: 62-64,         [ Links ]

Magee, A.R. & Manning, J.C., 2010, 'Annesorhiza calcicola (Apiaceae), a new limestone endemic species from the Western Cape Province of South Africa', South African Journal of Botany 76: 139-141,         [ Links ]

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Magee, A.R., Van Wyk, B.-E., Tilney, PM. & Vessio, N., 2011, 'A taxonomic revision of the Annesorhiza triternata group (Apiaceae, Apioideae): the transfer of Peucedanum trit-ernatum and P. filicaule and the description of five new species', Systematic Botany 36: 508-519,         [ Links ]

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Van Wyk, B.-E., Tilney, PM. & Magee, A.R., 2013, African Apiaceae: A synopsis of the Apiaceae/Umbelliferae of Sub-Saharan Africa and Madagascar, Pretoria: Briza Academic Books.         [ Links ]

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Winter, PJ.D., Magee, A.R., Phephu, N., Tilney, PM, Downie, S.R. & Van Wyk, B.-E., 2008, 'A new generic classification for African peucedanoid species (Apiaceae)', Taxon 57: 347-364,         [ Links ]



Dr Anthony R. Magee

Submitted: 20 November 2020
Accepted: 6 July 2021
Published: 12 October 2021

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