| 1. |
- Anderberg, Arne, et al.
(författare)
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Phylogeny and floral evolution of the Lysimachieae (Ericales, Myrsinaceae): evidence from ndhF sequence data.
- 2007
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 37, s. 407-421
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Tidskriftsartikel (refereegranskat)abstract
- Earlier hypotheses of floral evolution in Lysimachia and related genera were tested by phylogenetic analysis of DNA sequences from the plastid gene ndhF. It is concluded that taxa with flowers provided with oil-producing trichomes are not advanced and buzz-polinated species with anther cone are not ancestral as earlier proposed. Instead, species of Lysimachia with buzz-pollinated flowers belong to one derived clade, species with flowers provided with nectar producing trichomes belong to another, both groups have evolved from yellow flowered oil-producing ancestors. We also show that Lysimachia and most of its subgenera as well as the genera Anagallis, Pelletiera and Asterolinon are paraphyletic or polyphyletic as presently circumscribed, and that Trientalis and a few American species of Lysimachia are the closest relatives of the other species of Lysimachia + Anagallis, Asterolinon, Pelleriera and Glaux. The subgeneric classification and the biogeographical patterns are briefly discussed.
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| 2. |
- Bengtson, Annika, et al.
(författare)
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New subtribal and generic limits in the tribe Athroismeae (Asteraceae) and further disintegration of the subtribe Madagasterinae of the tribe Astereae
- 2024
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Ingår i: Willdenowia. - 0511-9618 .- 1868-6397. ; 54:1, s. 103-116
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Tidskriftsartikel (refereegranskat)abstract
- The Astereae subtribe Madagasterinae (Asteraceae) sensu Nesom encompassing four Malagasy genera (Apodocephala, Madagaster, Rochonia and Vernoniopsis) is polyphyletic, as Apodocephala is a member of the Malagasy subtribe Lowryanthina of the tribe Athroismeae. While Madagaster was shown to belong to Astereae, the phylogenetic positions of Rochonia and Vernoniopsis (now Jalantzia) in this tribe remained to be tested with molecular data. Lowryanthinae presently contains Apodocephala with nine species and the monospecific Lowryanthus. The monophyly of Apodocephala remained to be assessed using a comprehensive sampling. The aims were to: (1) assess the phylogenetic placements of Rochonia and Jalantzia (Vernoniopsis) and test the monophyly of Jalantzia; (2) assess phylogenetic relationships within Lowryanthinae; and (3) re-assess the subtribal and generic limits within the tribe Athroismeae. New phylogenetic analyses based on plastid sequence data confirmed the position of Rochonia in Astereae. Jalantzia (Vernoniopsis) was resolved as sister to the subtribe Lowryanthinae and therefore transferred to Athroismeae. A new subtribe, Jalantziinae, is described to accommodate Jalantzia. Apodocephala is paraphyletic with respect to Lowryanthus, which is formally merged with Apodocephala. A description of the emended subtribe Madagasterinae containing Madagaster and Rochonia is presented.
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| 3. |
- Bengtson, Annika, et al.
(författare)
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The Malagasy enigmatic genus Apodocephala (Asteraceae), a new member of the tribe Athroismeae
- 2021
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 51:2, s. 221-230
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Tidskriftsartikel (refereegranskat)abstract
- Apodocephala is a small genus of nine species of shrubs and trees endemic to Madagascar and currently classified in the tribe Astereae (Asteraceae). However, its present tribal position has been questioned, as it lacks some of the salient morphological features of that tribe. This study includes for the first time DNA sequences from Apodocephala (two species including the type of the generic name) to test its phylogenetic position. Phylogenetic analyses based on sequence data from nuclear ribosomal (ETS and ITS) and plastid (ndhF and trnL–trnF) DNA regions, using Bayesian inference and maximum parsimony methods, strongly reject the placement of Apodocephala in the Astereae. Our results, instead, support its position as sister to the Malagasy monospecific genus Lowryanthus within the tribe Athroismeae. Morphological comparison of these sister genera reveal similarities in cypsela morphology, and the inclusion of Apodocephala in the subtribe Lowryanthinae is proposed here. The tribe Athroismeae is now represented by ten genera (Anisochaeta, Anisopappus, Apodocephala, Artemisiopsis, Athroisma, Blepharispermum, Centipeda, Leucoblepharis, Lowryanthus and Symphyllocarpus), six of which occur in Madagascar. The Malagasy Athroismeae occur in all Malagasy terrestrial ecosystems (rainforests, deciduous dry forests, thicket spiny forests and savannas) and are likely the result of multiple independent colonization events mostly from mainland Africa.
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| 4. |
- Hedrén, Mikael, et al.
(författare)
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A replacement name for a species of Hypoestes (Acanthaceae) from Somalia
- 2015
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 45:1, s. 93-93
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Tidskriftsartikel (refereegranskat)abstract
- Hypoestes canescens Hedren & Thulin, nom. nov., is proposed for the illegitimate name H. cinerea Hedren, non C. B. Clarke.
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| 5. |
- Hernández-Ledesma, P., et al.
(författare)
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A taxonomic backbone for the global synthesis of species diversity in the angiosperm order Caryophyllales
- 2015
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 45:3, s. 281-383
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Tidskriftsartikel (refereegranskat)abstract
- The Caryophyllales constitute a major lineage of flowering plants with approximately 12500 species in 39 families. A taxonomic backbone at the genus level is provided that reflects the current state of knowledge and accepts 749 genera for the order. A detailed review of the literature of the past two decades shows that enormous progress has been made in understanding overall phylogenetic relationships in Caryophyllales. The process of re-circumscribing families in order to be monophyletic appears to be largely complete and has led to the recognition of eight new families (Anacampserotaceae, Kewaceae, Limeaceae, Lophiocarpaceae, Macarthuriaceae, Microteaceae, Montiaceae and Talinaceae), while the phylogenetic evaluation of generic concepts is still well underway. As a result of this, the number of genera has increased by more than ten percent in comparison to the last complete treatments in the Families and genera of vascular plants” series. A checklist with all currently accepted genus names in Caryophyllales, as well as nomenclatural references, type names and synonymy is presented. Notes indicate how extensively the respective genera have been studied in a phylogenetic context. The most diverse families at the generic level are Cactaceae and Aizoaceae, but 28 families comprise only one to six genera. This synopsis represents a first step towards the aim of creating a global synthesis of the species diversity in the angiosperm order Caryophyllales integrating the work of numerous specialists around the world.
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| 6. |
- Klackenberg, Jens
(författare)
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New species of Apocynaceae from Madagascar
- 2019
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 49:2, s. 209-229
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Tidskriftsartikel (refereegranskat)abstract
- Preparation of a treatment of the family Apocynaceae for the Flore de Madagascar et des Comoresnecessitates the description of 11 new species and one new variety in subfamilies Periplocoideae (Baroniella effusa, Pentopetia suarezensis) and Secamonoideae (Calyptranthera punctulata, C. rosea, Pervillaea lanata, Secamone chouxii, S. dictyoneura, S. furcata, S. glabra, S. laevis, S. parviflora and S. toxocarpoides var. incana). Furthermore, an amended description of Pervillaea tomentosa is provided necessitated by an earlier confusion of this taxon with P. brevirostris (here synonymized) and with the new species P. lanata.
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| 7. |
- Kool, Anneleen, et al.
(författare)
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A plant that Linnaeus forgot: taxonomic revision of Rhodalsine (Caryophyllaceae)
- 2017
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 47:3, s. 317-323
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Tidskriftsartikel (refereegranskat)abstract
- The mainly Mediterranean genus Rhodalsine (Caryophyllaceae) is revised and a single species, R. geniculata, is recognized, distributed from the Canary Islands in the west to Somalia in the east. The history of the taxon, which was known already during the 17th century but entirely overlooked by Linnaeus, is outlined. Variation and taxonomy are discussed and illustrations and a distribution map are provided. Many names are placed in synonymy and most of the names are typified, including six lectotypes designated here.
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| 8. |
- Lidén, Magnus, 1951-
(författare)
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The genus Dionysia (Primulaceae), a synopsis and five new species
- 2007
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 37:1, s. 37-61
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Tidskriftsartikel (refereegranskat)abstract
- Five new species of Dionysia are described (D. viva, D. zschummelii, D. crista-galli, D. zetterlundii and D. tacamahaca) from the Zagros mountains of W Iran. One subspecies (D. sarvestanica subsp. spatulata), one variety (D. gaubae var. macrantha) and two sections (D.sect. Zoroasteranthos and D. sect. Mucida) are also described as new. A revised classification of the genus is suggested and a complete list of species is provided, in which some emendations to previously published data are given. A dichotomous key to the species is presented.
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| 9. |
- Manns, Ulrika, 1965-, et al.
(författare)
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New combinations and names in Lysimachia (Myrsinaceae) for species of Anagallis, Pelletiera and Trientalis
- 2009
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 39:1, s. 49-54
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Tidskriftsartikel (refereegranskat)abstract
- New combinations are proposed for species of Anagallis, Pelletiera and Trientalis in accordance with the results of phylogenetic analyses of the Lysimachia complex, based on molecular and morphological data. These three genera as well as Glaux and Asterolinon, for the species of which names in Lysimachia are already available, have been found to be derived, specialized groups that have evolved within Lysimachia. The present classification therefore does not reflect our current understanding of evolutionary relationships within the Lysimachia complex. Merging all the genera in Lysimachia is here considered better than splitting the latter into several smaller genera. For Anagallis crassifolia and A. filifolia new names are validated and for A. alternifolia and A. pumila the names change since their epithets have already been used in Lysimachia. Lectotypes are selected for A. filifolia, A. filiformis, A. kingaënsis, A. monelli, A. schliebenii, A. serpens and Pelletiera verna, and a neotype is designated for A. foemina.
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| 10. |
- Sadowski, Eva-Maria, et al.
(författare)
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Staminate inflorescences with in situ pollen from Eocene Baltic amber reveal high diversity in Fagaceae (oak family)
- 2020
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 50, s. 405-517
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Tidskriftsartikel (refereegranskat)abstract
- Eocene Baltic amber forms the largest amber deposit worldwide; however, its source vegetation and climateare much debated. Representatives of the oak family (Fagaceae) were abundant in the Baltic amber source areabased on numerous inclusions of staminate inflorescences or individual florets, previously assigned to Castanea andQuercus. However, the actual generic and infrageneric diversity of Fagaceae from Baltic amber remained unknown.Using flower characteristics and section-diagnostic in situ pollen of staminate inflorescences and detached floret inclusions,we describe 18 fossil-species of Fagaceae making this family by far the most diverse plant family preservedin Baltic amber. We substantiate the occurrence of the Castaneoideae, Quercoideae (Quercus sect. Cyclobalanopsis/ Lobatae; Q. sect. Lobatae; Q. sect. Protobalanus), Trigonobalanoideae and the extinct genus Eotrigonobalanus.Among the 18 fossil-species, six are described as new: Q. aimeeana, Q. casparyi, Q. multipilosa, E. campanulata,E. conwentzii, E. longianthera; and one new combination is published: Q. brachyandra (≡ Castanea brachyandra).In addition, a lectotype is designated for the name Quercites meyerianus and neotypes are designated for the namesCastanea inclusa and Quercus longistaminea (≡ C. longistaminea). Members of the Fagaceae probably inhabitedazonal and zonal vegetation types of the amber source area, including bottomland flood-plains and stream banks(Q. sect. Lobatae), dry habitats (Q. sect. Lobatae, Q. sect. Protobalanus), peaty soils, riparian and swamp forests(Castanopsis, Eotrigonobalanus), as well as mixed mesophytic forests (castaneoids, Quercoideae, trigonobalanoids).Affinities to extant North American and E to SE Asian floras support the recent notion that late Eocene Baltic amber(38 – 34 Ma) was formed in a warm-temperate climate.
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| 11. |
- Schmidt, Alexander R., et al.
(författare)
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Selaginella in Cretaceous amber from Myanmar
- 2022
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Ingår i: Willdenowia. - : BioOne. - 0511-9618 .- 1868-6397. ; 52:2, s. 179-245
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Tidskriftsartikel (refereegranskat)abstract
- Selaginella (Selaginellales, Selaginellaceae) is the most speciose genus of lycophytes and, with approximately 750 recognized present-day species, also one of the largest genera of vascular plants. However, the evolutionary history of this species richness remains largely unresolved. Recent research suggests that Selaginella was diverse already in the mid-Cretaceous and shows that S. subg. Stachygynandrum dates back at least to the incipient Angiosperm Terrestrial Revolution some 100 million years ago. Here, we describe 20 new fossil-species of Selaginella based on fertile shoots and spores preserved in mid-Cretaceous Kachin amber from Myanmar and emend the previously described S. cretacea. Ten of the species (S. ciliifera, S. cretacea, S. grimaldii, S. heterosporangiata, S. longifimbriata, S. minutissima, S. ohlhoffiorum, S. patrickmuelleri, S. villosa, S. wangxinii) represent S. subg. Stachygynandrum because they possess anisophyllous strobili. The other eleven species have isophyllous strobili. Two of them (S. isophylla, S. wunderlichiana) are tentatively assigned to S. subg. Ericetorum, whereas the others (S. amplexicaulis, S. aurita, S. heinrichsii, S. konijnenburgiae, S. obscura, S. ovoidea, S. pellucida, S. tomescui, S. wangboi) cannot be placed into any fossil or extant subgenus. The fossils described in this study nearly duplicate the documented record of free-sporing plants from Kachin amber. The abundance and diversity of cryptogams, along with the absence of xerophytes among the taxa, is suggestive of constantly high humidity in the understory of the source forests of this amber.
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| 12. |
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| 13. |
- Stångberg, Frida, 1980-, et al.
(författare)
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Morphology and taxonomic reclassification of Gorteria (Asteraceae)
- 2014
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 44, s. 97-120
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Tidskriftsartikel (refereegranskat)abstract
- A phylogeny of the South African and Namibian genus Gorteria was recently elucidated by analysis of DNA sequencedata, which indicated that the prevailing taxonomic concepts of generic circumscription and species delimitationsdo not reflect the evolutionary history of the group. In the present paper a reclassification of the genus ispresented. The treatment includes an overview of morphological variation, an identification key, descriptions anda distribution map for all of the eight species recognized, including three new combinations (G. alienata, G. parviligulataand G. piloselloides) and one new species (G. warmbadica). Two lectotypes are designated (G. affinis andOedera (Gorteria) alienata).
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| 14. |
- Thulin, Mats, et al.
(författare)
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Identity of Tetragonia pentandra and taxonomy and distribution of Patellifolia (Chenopodiaceae)
- 2010
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 40:1, s. 5-11
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Tidskriftsartikel (refereegranskat)abstract
- The little-known Tetragonia pentandra, long regarded as a member of Aizoaceae in the Horn of Africa region, is included in a phylogenetic analysis using ITS sequence data of members of Betoideae (Chenopodiaceae). Patellifolia, including Tetragonia pentandra, is strongly supported as monophyletic and weakly supported as sister to a clade with Aphanisma, Oreobliton and Beta. Within Patellifolia relationships are largely unresolved and, as the characters that have been used to distinguish taxa in the group are found to be unreliable, we propose that all members of the Patellifolia clade are treated as a single variable species, P. procumbens. Synonymies of Patellifolia and of P. procumbens are provided and two names are lectotypified. The distribution of P. procumbens is mapped and shown to be widely disjunct between the W Mediterranean region/Macaronesia and the Horn of Africa region, with isolated occurrences also in the Saharan mountains.
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| 15. |
- Thulin, Mats, et al.
(författare)
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The identity of Pennisetum longistylum (Poaceae)
- 2015
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 45:2, s. 173-175
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Tidskriftsartikel (refereegranskat)abstract
- Pennisetum longistylum, recently stated to be an older name for the well-known P. clandestinum (Cenchrus clandestinus), is shown to be a hybrid between P. clandestinum and P. villosum (C. longisetus). This is a rare hybrid only known from a few gatherings from the highlands of Ethiopia and Eritrea, the most recent one made in 1916. The new combination Cenchrus xlongistylus is proposed, and the names P. clandestinum and P. villosum are lectotypified.
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| 16. |
- Younesi, Simin, et al.
(författare)
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Dionysia robusta (Primulaceae), a new species from W Iran
- 2016
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618 .- 1868-6397. ; 46:1, s. 105-112
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Tidskriftsartikel (refereegranskat)abstract
- A new species from the W part of the Iranian Zagros Mountains in Ilam province, Dionysia robusta (Primulaceae), is described, illustrated and compared with similar and related species. It differs from these relatives in leaf shape, length and density of glandular hairs, and shape of the calyx. The DNA sequence of the nuclear ribosomal ITS region of D. robusta is most similar to that of D. gaubae.
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| 17. |
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| 18. |
- Hedrén, Mikael
(författare)
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New species and combinations in Acanthaceae from Somalia
- 2006
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Ingår i: Willdenowia. - 0511-9618. ; 36:2, s. 751-759
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Tidskriftsartikel (refereegranskat)abstract
- Six species from Somalia, Barleria albomarginata, B. dentata, B. glaucobracteata, B. ilicifolia, Hypoestes cinerea and Justicia carnosa, are described as new to science, J. arenaria is proposed as a new name for J. ovalifolia var. psammophila and the new combination B. brevispina is proposed for B. linearifolia var. brevispina.
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| 19. |
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| 20. |
- Snogerup, Sven, et al.
(författare)
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Acanthus greuterianus (Acanthaceae), a new species from Greece.
- 2006
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Ingår i: Willdenowia. - 0511-9618. ; 36, s. 323-327
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Tidskriftsartikel (refereegranskat)abstract
- Acanthus greuterianus from the Greek provinces of Kozanis, Florinis, Grevenon and Pellis is described as a species new to science, illustrated and compared with other members of the genus in Greece and SW Asia.
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| 21. |
- Wahlsteen, Eric, et al.
(författare)
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Morphometric analyses and species delimitation in Legousia (Campanulaceae)
- 2019
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618. ; 49:1, s. 21-33
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Tidskriftsartikel (refereegranskat)abstract
- In order to evaluate the traditional morphological characters commonly used to distinguish the taxonomically problematic species of Legousia, we carried out a morphometric study with univariate analysis, principal component analysis (PCA), discriminant analysis (DA) and cluster analysis (UPGMA). The analyses were based on data from 436 individuals on 207 herbarium specimens from 18 countries in Europe, Africa and Asia representing all recently accepted species of the genus. Legousia falcata was found clearly distinct based on binary characters, L. falcata and L. hybrida were separated using refined binary and continuous characters, whereas L. pentagonia, L. snogerupii and L. speculum-veneris were all mixed in a single cluster, as were L. castellana, L. falcata and L. scabra. In a further refined sampling, L. snogerupii was separated by PCA, DA and UPGMA, but L. pentagonia and L. speculum-veneris were still indistinguishable and formed a single mixed cluster. Based on the results, we propose to reduce L. castellana and L. scabra to synonyms of L. falcata, and L. skvortsovii to a synonym of L. hybrida, while subspecific rank is proposed for L. pentagonia as L. speculum-veneris subsp. pentagonia, comb. & stat. nov. A key and nomenclatural synopsis of accepted taxa is provided and their geographic distribution is outlined.
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| 22. |
- Wahlsteen, Eric
(författare)
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SSR markers distinguish critically endangered Acer campestre populations from cryptic invading gene pools
- 2021
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Ingår i: Willdenowia. - : Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. - 0511-9618. ; 51:1, s. 115-125
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Tidskriftsartikel (refereegranskat)abstract
- Garden escapes of Acer campestre spread as a cryptic invading gene pools and challenge the conservation of a unique ancient population in southern Scandinavia. The native gene pool consists of just 34 individuals and is listed as critically endangered. This population is more than 150 years old and represents a unique diorama into an almost extinct genetic diversity of the early 19th century. That the native individuals cannot be separated from the introduced by morphology makes it impossible to delimit populations worthy of conservation. Genetic structuring was based on six SSR markers and reveals that, although the native population is small, it does not suffer from inbreeding. This article reports a high group affinity (Q coefficient) of the known native gene pool and a new finding of a population not earlier identified as native. Because the population is old and the fruit set is strongly reduced, it is recommended to preserve the genetic material by ex situ grafting and introduction of carefully chosen individuals from related gene pools.
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