Botany Letters, 2016 http://dx.doi.org/10.1080/23818107.2016.1224731

RESEARCH ARTICLE Chorological and taxonomic notes on African

Alexander P. Sukhorukova , Santiago Martín-Bravob, Filip Verloovec, Alfred Maroyid, Duilio Iamonicoe, Luís Catarinof, Ridha El Moknig, Thomas F. Danielh, Irina V. Belyaevai and Maria Kushuninaj aDepartment of Higher Plants, Biological Faculty, Lomonosov Moscow State University, Moscow, Russia; bBotany Area, Department of Molecular Biology and Biochemical Engineering, Universidad Pablo de Olavide, Seville, Spain; cBotanic Garden of Meise, Meise, Belgium; dDepartment of Botany, Faculty of Science and Agriculture, University of Fort Hare, Alice, South Africa; eDepartment PDTA, Section Environment and Landscape, University of Rome Sapienza, Rome, Italy; fUniversity of Lisbon, Faculty of Sciences, Centre for Ecology, Evolution and Environmental Changes (cE3c), Lisbon, Portugal; gMonastir University, Monastir Faculty of Pharmacy, Monastir, Tunisia; hDepartment of Botany, California Academy of Sciences, San Francisco, California, USA; iRoyal Botanic Gardens, Kew, Richmond, Surrey, UK; jDepartment of Physiology, Biological Faculty, Lomonosov Moscow State University, Moscow, Russia

ABSTRACT ARTICLE HISTORY This paper presents notes on new records and the of 12 species from Received 11 May 2016 several continental African countries and Madagascar. Datura wrightii (Solanaceae) is a new Accepted 25 July 2016 species for Africa reported from Morocco. Amaranthus muricatus () is reported KEYWORDS for the first time in Tunisia, Barleria oenotheroides (Acanthaceae) – from Central African Republic Africa; alien species; and Senegal, Burkea africana (Fabaceae) – from Guinea-Bissau, abyssinica () chorology; native species; – from Zambia, Digitaria ciliaris (Poaceae) – from Morocco. New data on distribution in Africa new records; taxonomy is provided for Camptorrhiza strumosa (Colchicaceae) and four Resedaceae taxa: Caylusea hexagyna, Ochradenus baccatus, Reseda arabica and Reseda villosa. The taxonomy of the enigmatic Madagascan endemic Mollugo caespitosa (Molluginaceae) is reviewed, and it is synonymized with Mollugo decandra. The lectotypes are designated for both Mollugo species.

Introduction Distribution and habitat

In the present article we provide new or revised records Amaranthus muricatus is a South American species of nine native species (Barleria oenotheroides, Burkea that is known as alien in other continents (see Boijan, africana, Camptorrhiza strumosa, Caylusea abyssinica, Clements, and Borsch 2003; Mosyakin and Robertson Caylusea hexagyna, Digitaria ciliaris, Ochradenus bacca- 2003; Palmer 2009; Iamonico 2015a). tus, Reseda arabica, Reseda villosa) and two alien species In Africa, this species was only known to occur in (Datura wrightii and Amaranthus muricatus) for sev- Morocco (APD 2016; Iamonico 2015a), but is here eral African countries as well as taxonomic notes on reported from Tunisia for the first time. According to the enigmatic Madagascan endemic Mollugo caespitosa. Pyšek et al. (2002) and Richardson and Pyšek (2006), New records are based on field investigations and/or the A. muricatus is considered as a casual alien species, study of herbarium material. The structure of the arti- growing on ruderal habitat such as roadsides, gardens cle is based on the series of contributions dealing with and flowerbeds. The present note is part of an ongoing new plant records for Asian and European countries study of the Tunisian Amaranthaceae carried out by both and published in Acta Botanica Gallica/Botany Letters contributors. (Nobis et al. 2014a,b, 2015a,b, 2016). The taxa are pre- sented alphabetically. Remarks on distribution, habitat, Taxonomic notes taxonomy, and delimitation are provided for each of the studied species, as well as a list of examined specimens. Amaranthus muricatus belongs to the subgenus Albersia Geographical areas follow Brummit (2001), herbaria (Kunth) Gren. & Godr. sect. Pentamorion (Beck) codes follow Thiers (2015). Mosyakin & K.R.Robertson (Mosyakin and Robertson 1996), which differs from the related sections by hav- Amaranthus muricatus (Gillies ex Moq.) Hieron. ing five perianth segments and indehiscent fruits. From (Amaranthaceae) the morphological point of view, A. muricatus is simi- lar to Amaranthus induratus C.A. Gardner ex J. Palmer Contributors – Duilio Iamonico, Ridha El Mokni & Mowatt, the latter species being native to Australia

CONTACT Alexander P. Sukhorukov [email protected] © 2016 Société botanique de France Botany Letters 9

Figure 4. Reseda villosa. (A) General habit and (B) close-up of the inflorescences and young fruits. Photographs taken in Morocco, Errachidia province, Kerrandou (voucher: S. Martín-Bravo 3SMB16, UPOS), by S. Martín-Bravo. currently corresponds to Mali. Furthermore, we have (P-05365319!); Air, Kori Ofoud, 13 February 1976, sable located the cited locality (Goundan) in Mali. Therefore, [sand], P. Lavie 983 (P-05365320!); Air, Massif de l’′O- we propose the removal of Sudan from this species’ foud, plaine de altitude [plateau], 1300 m, 14 February range. The specimens from the herbarium of the French 1976, sable [sand], P. Lavie 986 (P-05365322!); entre National Museum of Natural History (P) cited below Tabello et Agades [between Tabello and Agadez], March confirm its presence in Niger and Mali. Therefore, the 1933, Petit-Lagrange 55 (P-05365323!). current known distribution of R. villosa should be as fol- MALI: Adrar des Iforas, 1983, E. ag Sidiyène 142 lows: Morocco, Mauritania, Algeria, Mali, Niger, Libya, (P-00580913!); Region de Tombouctou, Gassa, 21 August and Chad. 1899, A. Chevalier 2521 (P-00086077!, B-100165036!); Azigui, Oued d'Asskarai, 1934, Mission d'Études de la Taxonomic notes Biologie des Acridiens 500 (P-00580914!, P-005809151!, P-005809161!). Reseda villosa is included in the type section and is morphologically very distinctive. The closely related Acknowledgements Moroccan endemic Reseda elata Coss. ex Müll.Arg. is the only species it can be confused with. However, Santiago Martín-Bravo thanks Maha Kordofani (University R. villosa may be distinguished by the more or less densely of Khartoum, Sudan) for comments on the distribution of Resedaceae in Sudan. The authors thank Keith Chamberlain pubescent stems and and by the upper petal with (Rothamsted Research, UK) for linguistic corrections of the a central lobe much longer and wider than the cocks- text. comb-like small lateral lobes (Abdallah and de Wit 1978). Funding Examined specimens (new records) The research of Alexander Sukhorukov and Maria Kushunina NIGER (selected specimens): Takalam, 10 September was supported by the Russian Science Foundation (grant # 1987, Saadou 2322 (P-04724510!); Vallée de l’′Azar, 14-50-00029). Alfred Maroyi would like to express his gratitude to the National Research Foundation (NRF) of South Africa for sablo-limoneux [sandy-silty], 25 November 1969, financial support to conduct his research (grant T398). G. Rippstein 80 (P-05365312!); Guest Tillia, bord depres- sion de In Tarekenat, glaise limono-sableuse en bas de pente [border of In Tarekenat depression, sandy-silty clay Conflict of interest at the bottom of a slope], 10 September 1985, Peyre de No conflict of interest was declared by the authors. Fabrégues 4124 (P-05365313!); Egarek, bas fond sableux [sandy depression], 26 April 1968, Peyre de Fabrégues Notes on contributors 2689 (P-05365315!, P-05365316!); In Todok, bas fond [depression], 17 January 1968, Peyre de Fabrégues 2665 Alexander P. Sukhorukov, Dr Sci since 2016, has been the lead- (P-05365317!); P. Lavie 933 (P-05365318!); Air, Kori ing Scientist at the Department of Higher Plants, Biological Tagueï, 13 February 1976, sable [sand], P. Lavie 982 Faculty (Moscow Lomonosov State University), Professor of