Hymenonema is a Greek endemic genus consisting of two species, H. laconicum and H. graecum, occurring in the lowlands of S Peloponnisos and on most of the C Aegean islands, respectively. Morphological investigation of 20 gatherings covering the entire distribution range revealed clear morphological differences between the two species, mainly in pappus, achenes, anther tube, ligules and basal leaf characters. A corresponding emended identification key to the species is given. Karyological investigation of 11 accessions included karyotypes, idiograms and karyological indices for both species. Six karyomorphological parameters were also statistically analysed. Populations with intermediate morphological characters between the two species are recorded for the first time and their relationship with the typical two species is discussed. The geographical distribution of the genus is mapped and doubtful locations are commented on. The cytotaxonomic data and the geographical distribution of the species support the characterization of H. laconicum and H. graecum as schizoendemics. The conservation status of both species is suggested as Vulnerable (VU) according to IUCN criteria.

Citation: Liveri E., Bareka P. & Kamari G. 2018: Taxonomic study on the Greek endemic genus Hymenonema (Asteraceae: Cichorieae), using morphological and karyological traits. — Willdenowia 48: 5–21. doi: https://doi.org/10.3372/wi.48.48101

Version of record first published online on 19 January 2018 ahead of inclusion in April 2018 issue.

A synopsis of species belonging to the genus Woodwardia Sm. (Blechnaceae) from Veracruz State, Mexico, is presented. Three species (including one hybrid species) are recognized as inhabiting Veracruz: the widespread W. spinulosa M. Martens & Galeotti, which grows in montane rain forests; the Mexican endemic W. martinezii Maxon ex Weath., growing in mesic woods; and W. ×semicordata Mickel & Beitel (W. martinezii × W. spinulosa), found in both deciduous and evergreen forests. An identification key to the three species is provided and the name W. spinulosa is lectotypified.

Citation: Palacios-Rios M. & Arana M. D. 2018: A synopsis of Woodwardia (Blechnaceae) in Veracruz State, Mexico, and typification of W. spinulosa. — Willdenowia 48: 23–28. doi: https://doi.org/10.3372/wi.48.48102

Version of record first published online on 20 March 2018 ahead of inclusion in April 2018 issue.

In preparation for the treatment of Arctotis L. (Asteraceae) in the e-Flora of South Africa project, the correct names, typifications and synonymies are clarified for 24 Arctotis species and two varieties indigenous to the Western Cape and Eastern Cape provinces of South Africa. Lectotypes are designated for 36 names and neotypes for two names. The names A. glabrata Jacq., A. paniculata Jacq. and A. spinulosa Jacq. are resurrected for poorly known, apparently geographically restricted species. Arctotis roodae Hutch. is the correct name at specific rank for the taxon previously known as A. campanulata var. puberula DC. Arctotis laciniata Lam. is the earliest legitimate name for an element of the A. aspera species complex, to which the name A. revoluta Jacq. has often been applied. The name A. revoluta Jacq. correctly applies to a distinct, unrelated species, for which a revised synonymy is presented. A lectotype is designated for the illegitimate name A. undulata Jacq., the earliest legitimate name for which is A. acaulis var. undulata Less.

Citation: McKenzie R. J. 2018: Nomenclatural changes and typifications of Arctotis species (Asteraceae, Arctotideae) from the Western Cape and Eastern Cape provinces of South Africa. — Willdenowia 48: 29–49. doi: https://doi.org/10.3372/wi.48.48103

Version of record first published online on 20 March 2018 ahead of inclusion in April 2018 issue.

The intricate taxonomy of Sedum creticum C. Presl, a name misinterpreted for 159 years up to the study of the original material by Král in 1987, is reviewed and revised. The two “ecotypes” distinguished within S. creticum (var. creticum and var. monocarpicum 't Hart) are shown to represent mere non-heritable modifications not warranting formal taxonomic recognition. Sedum ×donatae Afferni, a purported natural hybrid between S. creticum and S. cyprium A. K. Jacks. & Turrill, is based on the same type gathering as S. hierapetrae Rech. f., which is a taxonomic synonym of S. creticum. A full synonymy of S. creticum is given and a lectotype is designated for S. hierapetrae Rech. f.

Citation: Thiede J. & Stephenson R. 2018: The taxonomy and typification of Sedum creticum, and the curious protologue of S. ×donatae (Crassulaceae). — Willdenowia 48: 51–55. doi: https://doi.org/10.3372/wi.48.48104

Version of record first published online on 29 March 2018 ahead of inclusion in April 2018 issue.

The herbarium of Ignaz Dörfler (1866–1950), an Austrian botanist, plant collector and trader, was acquired by the Botanical Museum Berlin (B) in 1990 and has now been incorporated into the general herbarium. Dörfler's herbarium comprises c. 5500 specimens, including 203 types, almost exclusively collected by himself on the Balkan Peninsula and in Central Europe. The type material is listed in detail and 21 names are lectotypified. In addition, a brief biography of Dörfler is presented.

Citation: Vogt R., Lack H. W. & Raus Th. 2018: The herbarium of Ignaz Dörfler in Berlin [De herbario berolinensi notulae No. 55]. — Willdenowia 48: 57–92. doi: https://doi.org/10.3372/wi.48.48105

Version of record first published online on 4 April 2018 ahead of inclusion in April 2018 issue.

Drosera xerophila A. Fleischm., a new species of sundew from Overberg District, Western Cape Province, South Africa, is described and illustrated together with details on its distribution, ecology, habitats and conservation status. The new species is morphologically compared with presumably closely related taxa. An identification key and synopsis are provided for all rosetted hemicryptophyte (”perennially growing”) Drosera species of the SW part of Western Cape Province, with synonymy, types, distribution (including maps) and citation of specimens and georeferenced photographs. The names D. aliciae Raym.-Hamet, D. curviscapa T. M. Salter and D. curviscapa var. esterhuyseniae T. M. Salter are lectotypified.

Citation: Fleischmann A. 2018: Drosera xerophila (Droseraceae), a new species from Overberg District, South Africa, and an overview of the rosetted hemicryptophyte sundew species from Western Cape Province. — Willdenowia 48: 93–107. doi: https://doi.org/10.3372/wi.48.48106

Version of record first published online on 5 April 2018 ahead of inclusion in April 2018 issue.

Limestone outcrops often harbour floras rich in threatened and narrowly endemic species. Still, these formations, usually associated with karst landscapes, remain floristically poorly known, and so are often neglected in conservation programmes. In Brazil, three species of Marsdenia (Apocynaceae) endemic to limestone outcrops are known: M. breviramosa, M. virgultorum and M. zehntneri. In this work, we describe and illustrate two new species of Marsdenia restricted to karst landscapes: M. calcaria from the state of Minas Gerais and M. phallica from the state of Goiás. We also include illustrations of M. zehntneri, the species morphologically most similar to the two new species, and in situ images of the species of Marsdenia from limestone formations in Brazil (except for M. virgultorum, which is known only from the type). A geographic distribution map and an identification key for the five species known from limestone formations are also provided.

Citation: Espírito Santo F. S., Bitencourt C., Ribeiro P. L. & Rapini A. 2018: Two new species of Marsdenia (Apocynaceae) from limestone outcrops in Brazil. — Willdenowia 48: 109–116. doi: https://doi.org/10.3372/wi.48.48107

Version of record first published online on 5 April 2018 ahead of inclusion in April 2018 issue.

We present relevant data about the taxonomy, nomenclature, and chorology of nine species of the genus Carex from the Neotropics. We provide two new records for the South American continent, one of them an introduced species in Argentina and Uruguay (C. divisa), and the other an apparently naturally occurring species in Venezuela (C. buxbaumii), two new records for Central America in Costa Rica (C. setigluma) and Guatemala (C. phalaroides), and five other new records at the national level for Colombia (C. larensis, C. ownbeyi, C. tachirensis), Ecuador (C. haematopus) and Uruguay (C. catharinensis), as well as relevant regional records for two of these species in Venezuela (C. larensis, C. tachirensis). We also provide taxonomic observations on the poorly understood C. tachirensis. Finally, we lectotypify three names (C. larensis, C. niederleiniana and C. phalaroides) and propose the synonymization of C. tucumanensis with the earlier described C. niederleiniana.

Citation: Jiménez-Mejías P., Strong M., Gebauer S., Hilpold A., Martín-Bravo S. & Reznicek A. A. 2018: Taxonomic, nomenclatural and chorological reports on Carex (Cyperaceae) in the Neotropics. — Willdenowia 48: 117–124. doi: https://doi.org/10.3372/wi.48.48108

Version of record first published online on 5 April 2018 ahead of inclusion in April 2018 issue.

The historical background and typification of the widely distributed and highly appreciated breadfruit tree, Artocarpus altilis (≡ Sitodium altile; Moraceae), and breadnut, A. camansi, is discussed. Sitodium altile is lectotypified selecting a watercolour painting by Sydney Parkinson made in Tahiti in 1769, during James Cook's first voyage around the world (1768–1771) in HMS Endeavour, and preserved at the Natural History Museum of London. A specimen from E. D. Merrill's “illustrative specimens” of Blanco's Philippine plants in the United States National Herbarium is designated as the neotype for A. camansi.

Citation: Ferrer-Gallego P. P. & Boisset F. 2018: The naming and typification of the breadfruit, Artocarpus altilis, and breadnut, A. camansi (Moraceae). — Willdenowia 48: 125–135. doi: https://doi.org/10.3372/wi.48.48109

Version of record first published online on 5 April 2018 ahead of inclusion in April 2018 issue.

The intra-generic relationships within the intriguing genus Petrorhagia are currently debated, as the genus is underrepresented in recent taxonomic studies. In this study, we investigate the relationships among the species of Petrorhagia [sect. Petrorhagia] subsect. Saxifragae occurring in Greece. Based on a combination of ordination methods and discriminant analyses of 36 macromorphological characters, five species are recognized in Greece. The analyses showed that all currently known species from Greece (P. fasciculata, P. graminea, P. phthiotica and P. saxifraga) represent distinct taxonomic entities. According to our results, two recently collected populations from SE Peloponnisos represent a fifth, new Petrorhagia species, which is first described and illustrated here as P. laconica. It is related to the widespread P. saxifraga and the Greek endemic P. graminea, but clearly distinct from both species by a combination of morphological characters, including indumentum, inflorescence, calyx, capsule and seed characters.

Citation: Trigas P., Kougioumoutzis K., Ermidou A. & Kalpoutzakis E. 2018: Multivariate morphometric analysis of Petrorhagia subsect. Saxifragae (Caryophyllaceae) in Greece, with a new species from SE Peloponnisos: P. laconica. — Willdenowia 48: 137–146. doi: https://doi.org/10.3372/wi.48.48110

Version of record first published online on 5 April 2018 ahead of inclusion in April 2018 issue.

Citation: Lack H. W. & Wissemann V.: Gerhard Wagenitz (1927–2017). — Willdenowia 48: 147–160. doi: https://doi.org/10.3372/wi.48.48111

Version of record first published online on 5 April 2018 ahead of inclusion in April 2018 issue.

Barina Z., Mullaj A., Pifkó D., Somogyi G., Meco M. & Rakaj M.: Distribution atlas of vascular plants in Albania. — Budapest: Hungarian Natural History Museum, 2017. — ISBN 978-963-9877-29-0. — 21.4 × 30.2 cm, 492 pp., 8 b/w figures, several hundred b/w distribution maps, English; hardback. — Price: ± EUR 82.

Vangjeli J.: Flora albanica atlas. Volume 1. Pteridophyta—Apiaceae. — Schmitten-Oberreifenberg: Koeltz Botanical Books, 2017. — ISBN 978-3-946583-08-0. — 21.5 × 28.6 cm, x + 933 pp., c. 1700 2-colour distribution maps, c. 1700 colour photos, English; hardback. — Price: EUR 244. — Available at http://www.koeltz.com.

Citation: Raus Th. 2018: Book reviews: Barina Z., Mullaj A., Pifkó D., Somogyi G., Meco M. & Rakaj M.: Distribution atlas of vascular plants in Albania; Vangjeli J.: Flora albanica atlas. Volume 1. Pteridophyta—Apiaceae. — Willdenowia 48: 161–169. doi: https://doi.org/10.3372/wi.48.48112

Version of record first published online on 5 April 2018 ahead of inclusion in April 2018 issue.

Friis I. & Balslev H. (ed.): Tropical plant collections. Legacies from the past? Essential tools for the future? Proceedings of an international symposium held by The Royal Danish Academy of Sciences and Letters in Copenhagen, 19^th–21^st of May, 2015. Scientia Danica, Series B, Biologica vol. 6. — Copenhagen: Det Kongelige Danske Videnskabernes Selskab, 2017. — ISSN 1904-5484, ISBN 978-87-7304-407-0. — 21 × 26.5 cm, 320 pp, English, softback. — Price: DKK 300 (± EUR 40).

Citation: Esser H.-J. 2018: Book review: Friis I. & Balslev H. (ed.): Tropical plant collections. Legacies from the past? Essential tools for the future? Proceedings of an international symposium held by The Royal Danish Academy of Sciences and Letters in Copenhagen, 19^th–21^st of May, 2015. — Willdenowia 48: 171–172. doi: https://doi.org/10.3372/wi.48.48113

Version of record first published online on 5 April 2018 ahead of inclusion in April 2018 issue.