Filip Verloove

Filip Verloove
Meise Botanic Garden · Spermatophytes

About

262
Publications
104,467
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1,656
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Introduction
I have been studying non-native vascular plants (invasives as well as casuals) since about 30 years now, initially in Belgium but since many years also in other parts of (south-) western Europe (mainly France, Italy, Portugal and Spain + Macaronesia). My research mostly emphasizes on recognition (identification) and taxonomy, usually of complex or poorly understood taxa. Special groups of interest are Poaceae, Cyperaceae, Artemisia and certain succulent families such as Cactaceae and Agavaceae.
Additional affiliations
March 2003 - present
Meise Botanic Garden
Position
  • Researcher

Publications

Publications (262)
Article
Full-text available
We report here the first occurrences of two alien cacti species from Algeria. During field surveys from 2016 to 2022 in the Skikda region (north-eastern Algeria), ten populations of Opuntia monacantha (Willd.) Haw. were recorded. This species is reported here as naturalized alien species for the first time for Algeria and the second time for mainla...
Poster
Homblé collected plants in Guangxi (China) before becoming famous as one of the first collectors in Katanga (DR Congo). His Chinese collection erroneously was inserted in the African herbarium in BR. As a result, four African species were described from Chinese material. After a century, their genuine identity is now elucidated, e.g. Caesalpinia ho...
Article
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The taxonomy of Echinochloa, a predominantly tropical to warm-temperate genus of 40-50 species, including some of the world's worst weeds, is still poorly understood. This is because some species, including the extremely widespread E. crus-galli, show a wide range of morphological, physiological and ecological variation, in part the result of a com...
Article
Recent botanical surveys undertaken in central and northern Tunisia (North Africa) since 2014, mainly within coastal regions, yielded new records for non-native succulents (casual or naturalising aliens) of vascular plant species belonging to Asparagaceae sensu lato (Dracaena draco (L.) L. subsp. draco, Sansevieria hyacinthoides (L.) Druce, S. trif...
Article
Full-text available
The escape from cultivation of Ficus microcarpa (Moraceae, Magnoliopsida) in Algeria is here reported. Several localities where the species reproduces from seeds have been discovered recently in northeastern Algeria. A map of its current distribution in the study area is provided. The species colonizes mainly urban habitats (walls, balconies and si...
Article
Cynosurus peltieri (Poaceae) is a very poorly known species only occurring in Algeria and Tunisia. A morphological description, together with its distribution and habitat, taxonomy, and IUCN Red List assessment are provided in the present paper. Photographic illustrations of the species comparing it with the similar Cynosurus polybracteatus, togeth...
Book
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This book provides a complete, copiously illustrated and up-to-date overview of the Cyperaceae of tropical West Africa (Benin, Burkina Faso, Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Nigeria, Senegal, Sierra Leone, Togo and parts of Mali, Mauritania and Niger). It includes identification keys for all known species in the area (a t...
Article
Full-text available
Deux nouvelles espèces de wolffies en France métropolitaine : Wolffia columbiana H. Karst. et W. globosa (Roxb.) Hartog & Plas (Araceae) Résumé. Trois espèces de Wolffia sont dorénavant connues en France métropolitaine : l'espèce indigène W. arrhiza (L.) Horkel ex Wimm. et deux espèces exotiques nouvellement détectées en 2020 (W. columbiana H. Kars...
Article
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The Irano-Turanian Rumex chalepensis has been recorded in two localities in Morocco since 2013, apparently for the first time in Africa and rather disjunct from the species' known distribution range. Populations were found in eastern Morocco: one close to the city of Midelt (High Moulouya valley), in the high plains between the Middle Atlas and Hig...
Article
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Sixteen new Asteraceae are added to the non-indigenous flora of Tunisia. Six of them (Dimorphotheca ecklonis,Gaillardia pulchella, Gazania linearis var. linearis, Guizotia abyssinica, Rudbeckia triloba and Tithonia diversifolia) are also new for the flora of North Africa. Chrysanthemummorifolium is here first reported for the Mediterranean Basin. S...
Article
Mapanoioideae are one of two subfamilies of Cyperaceae and consist of 186 species. Molecular phylogenetic relationships in subfamily Cyperoideae have recently been studied well, whereas evolutionary relationships in Mapanioideae remain little known. Subfamily Mapanioideae include two tribes. This study focuses on Hypolytreae, which is represented b...
Article
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A cryptic invader of the genus Persicaria has recently increased in the damper, northern parts of La Palma and Gran Canaria in the Canary Islands (Spain) and locally behaves as an invasive species. Examination of historical herbarium specimens showed this species to be present in Gran Canaria since the 1960s and the same probably applies to La Palm...
Preprint
Full-text available
A cryptic invader of the genus Persicaria is recently increasing in the damper, northern parts of La Palma and Gran Canaria in the Canary Islands (Spain) and locally behaves as an invasive species. Examination of historical herbarium specimens showed this species to be present in Gran Canaria since the 1960’s and the same probably applies to La Pal...
Article
Full-text available
Senecio brasiliensis (Spreng.) Less., native to South America (Brazil, Paraguay, Uruguay, Bolivia and Argentina), is reported for the first time as a naturalized alien species from Europe (near Porto; Portugal). The species' taxonomy and nomenclature were analysed based on literature data. Its ecology, habitat, biology and possible vector of introd...
Article
Aim Humans influence species distributions by modifying the environment and by dispersing species beyond their natural ranges. Populations of species that have established in disjunct regions of the world may exhibit trait differentiation from native populations due to founder effects and adaptations to selection pressures in each distributional re...
Article
The genus Vallisneria consists of linear-leaved aquatic plants within the Hydrocharitaceae family. Only one indigenous member (V. spiralis) occurs in Europe. Populations of alien species appeared in some European countries in recent decades and these were named in various ways. To clarify the identity of alien Vallisneria we collected samples for a...
Article
Full-text available
The Eurasian species Artemisia vulgaris L. has been reported from the Eastern Cape Province (Stutterheim District) in South Africa since at least half a century. However, examination of relevant herbarium specimens has demonstrated that the South African plant material belongs to a morphologically similar East Asian species, A. verlotiorum. It is i...
Article
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The South American weed Cyperus eragrostis Lam. (Cyperaceae) is reported for the first time in the wild from Tunisia, North Africa. A brief description of the species is given and it is illustrated in its Tunisian habitat. Its actual distribution is presented and discriminatory characteristics as compared to C. flavescens, a native species with whi...
Article
Full-text available
In this contribution, new data concerning the distribution of vascular flora alien to Italy are presented. It includes new records, confirmations, exclusions, and status changes for Italy or for Italian administrative regions. Nomenclatural and distribution updates published elsewhere are provided as Suppl. material 1.
Article
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This is the thirteenth of a series of miscellaneous contributions, by various authors, where hitherto unpublished data relevant to both the Med-Checklist and the Euro+Med (or Sisyphus) projects are presented. This instalment deals with the families Amaryllidaceae (incl. Alliaceae), Apocynaceae, Caryophyllaceae, Chenopodiaceae, Compositae, Crassulac...
Article
Full-text available
Recent fieldwork in Tunisia yielded several new records of non-native species of the genus Agave. Agave angustifolia var. marginata, A. fourcroydes and A. sisalana are locally naturalised and reported for the first time from the country. To our knowledge, naturalised populations of these three taxa were also unknown elsewhere in the Maghreb and Nor...
Article
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The Caribbean species Agave vivipara was confused during several decades with the widely cultivated ornamental species A. angustifolia. Both are in fact quite dissimilar, the former being rarely offered for sale in the horticultural trade. However, in recent years it was rather frequently planted in Gran Canaria in the Canary Islands (Spain) and it...
Article
Full-text available
Background Recent fieldwork by the author in Tenerife, mostly between 2014 and 2019, yielded new records of alien vascular plants. New information Fifteen taxa (Acacia decurrens, A. mearnsii, Caesalpinia pulcherrima, Ensete ventricosum, Eucalyptus camaldulensis subsp. arida, E. cladocalyx, Euryops chrysanthemoides, Ficus elastica, Lippia alba, P...
Article
Full-text available
The original set of botanical collections of the agronomist H.A. Homblé is conserved in the herbarium BR. Homblé was one of the first collectors (1911–1913) for the flora of Katanga, Democratic Republic of the Congo. Many Homblé specimens were described as taxonomic novelties; 107 tropical African plant species are named after him. Before his colon...
Article
Full-text available
As a continuation of previous investigations of the subspontaneous flora in the domain of Meise Botanic Garden (MBG), further fieldwork since 2011 yielded several interesting new records of vascular plants garden escapes. In this contribution, part of these new records for MBG are presented. In total 23 taxa not previously recorded are presented. E...
Article
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In 2010, a specimen of A. ×alternifolium nsubsp. heufleri was found in Carrière de la Falize (Aywaille). This taxon is a hybrid of A. trichomanes subsp. quadrivalens (Maidenhair Spleenwort) and A. septentrionale subsp. septentrionale (Northern Spleenwort). Here, we describe the phylogeny, morphology and ecology of this hybrid and its parents. Despi...
Article
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Corydalis linstowiana Fedde is a Chinese species with a rather limited natural distribution (the western part of Sichuan). It is cultivated, although probably very rarely, as an ornamental plant and – thanks to its ‘explosive’ fruits – is sometimes observed in a subspontaneous or even locally naturalized state. It is often considered an undesirable...
Article
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An adventive Hydrocotyle (Pennywort) that has been established in lawns in the Antwerp Zoo since the 1980s appears to belong to H. sibthorpioides, not to H. novae-zelandiae as originally assumed. A second Belgian locality was recently discovered in Knokke. A few years ago, a population of H. verticillata has furthermore been found in Bredene. This...
Article
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Botanical surveys undertaken in Central and Northern Tunisia (North Africa), mostly between 2015 and 2020, have revealed three new allochthonous cacti. The reported taxa belong to the genus Cylindropuntia (Cactaceae, subfamily Opuntioideae, tribe Cylindropuntieae). C. leptocaulis, C. prolifera and C. spinosior are here reported for the first time f...
Preprint
Full-text available
Recent fieldwork by the author in Tenerife, mostly between 2014 and 2019, yielded new records of alien vascular plants. Seventeen taxa ( Acacia decurrens , A. mearnsii , Brachychiton diversifolius , Caesalpinia pulcherrima , Ensete ventricosum , Eucalyptus camaldulensis subsp. arida , E. cladocalyx , Euryops chrysanthemoides , Ficus elastica , Lipp...
Article
Full-text available
New localities and/or confirmations concerning 74 specific and subspecific plant taxa of Tuscan vascular flora, belonging to 69 genera and 28 families are presented: Bunium, Trinia (Apiaceae), Nerium (Apocynaceae), Lemna (Araceae), Artemisia, Bidens, Centaurea, Crupina, Gazania, Hieracium, Rhagadiolus, Symphyotrichum, Tagetes, Tripleurospermum (Ast...
Article
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Between 2015 and 2019 field work was carried out in campsites in Belgium and the Netherlands. These proved to harbor an extraordinary rich flora, consisting of (mostly) alien species and (very) rare native species that probably also were introduced, at least for the most part. These species were all introduced inadvertently by tourists, their seeds...
Article
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In the south of France, at Rivesaltes (Pyrénées-Orientales), an apparently well-established population of the South American grass species Nassella longiglumis (Phil.) Barkworth has been observed for the first time in Europe. The discovery brings the number of naturalized species of this genus on the continent to five.
Article
Full-text available
Based on morphological characteristics, genome size and molecular phylogenetics the identity of introduced taxa of Artemisia section Artemisia in Belgium and the Netherlands was critically reassessed. It was shown that several populations of alleged A. verlotiorum belong to A. princeps instead. This species is native to Eastern Asia (China, Japan a...
Article
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Various author citations for the African species Abutilon bidentatum are usually used. According to the International Code of Nomenclature, its basionym was effectively and validly published on the printed labels of the Schimper exsiccata Iter Abyssinicum II n. 1003 and the type must be chosen accordingly.
Article
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Species checklists are a crucial source of information for research and policy. Unfortunately , many traditional species checklists vary wildly in their content, format, availability and maintenance. The fact that these are not open, findable, accessible, interoperable and reusable (FAIR) severely hampers fast and efficient information flow to poli...
Article
Full-text available
Species checklists are a crucial source of information for research and policy. Unfortunately, many traditional species checklists vary wildly in their content, format, availability and maintenance. The fact that these are not open, findable, accessible, interoperable and reusable (FAIR) severely hampers fast and efficient information flow to polic...
Article
Full-text available
Cyperus permacer sensu C.B. Clarke is not the same as C. permacer sensu Hooper in Flora of West Tropical Africa. A thorough study of herbarium specimens proved the latter to be a mere variety of C. tenuiculmis Boeckeler. The taxonomic identity of C. permacer itself is also unclear, the holotype being a poor specimen. It possibly is only a depaupera...
Article
Full-text available
Recent fieldwork in the maritime influence area of the provinces of Barcelona and Girona (NE Spain, Catalonia) yielded several interesting new records of non-native vascular plants. Abelia ×grandiflora, Bauhinia forficata subsp. pruinosa, Bidens vulgata, Celosia argentea, Chamaecyparis lawsoniana, Cyperus esculentus var. heermannii, Firmiana simple...
Article
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Hordeum murinum subsp. murinum is a common archaeophyte in Belgium. A more southern subspecies, subsp. leporinum, is known since 1938 as a rare, ephemeral alien, mostly associated with the grain or wool industry. In the past decade, however, it has increasingly been recorded. In port areas in Antwerp and Ghent it has locally naturalized along railw...
Article
Full-text available
Historical herbarium collections of these two species from Belgium, more precisely from Saint-Denis (prov. Hainaut), were critically revised. Although it was generally admitted that only the latter had been reliably collected in the past, it is suggested that probably both species were formerly present in that locality. [in French]
Article
Full-text available
The Far Eastern weed Artemisia verlotiorum was formerly reported from Lebanon. However, for a number of reasons this record was questionable. In 2019, the genuine presence of this species was confirmed based on macromorphology and strengthened by assessing the somatic nuclear DNA content (genome size or 2C-value) of the Lebanese populations.
Article
Full-text available
Recent field work by the authors on the island of Gran Canaria (Canary Islands, Spain) yielded new interesting records of non-native species. Seven species, i.e. Centaurea sulphurea, Clematis flammu-la, Fallopia baldschuanica, Fraxinus angustifolia, Melilotus officinalis, Saponaria officinalis, and Searsia lancea have not been recorded before from...
Article
Full-text available
This is the twelfth of a series of miscellaneous contributions, by various authors, where hitherto unpublished data relevant to both the Med-Checklist and the Euro+Med (or Sisyphus) projects are presented. This instalment deals with the families Asparagaceae (incl. Hyacinthaceae), Boraginaceae, Cactaceae, Caryophyllaceae, Chenopodiaceae, Compositae...
Article
Full-text available
Ten interesting records of ornamental vascular plants in the SW of the Iberian Peninsula (Spain-Portugal) are presented. These either refer to escapes from cultivation or are located in abandoned historic gardens of the province of Huelva where they have established themselves. For each taxon details are given about the distribution, the occupied h...
Article
Full-text available
Bulbostylis viridecarinata (De Wild.) Goetgh. is a widespread species occurring in many parts of Tropical Africa. Bulbostylis tisserantii Cherm. was synonymized with this species but based on numerous morphological differences this species should be reinstated at species rank. It is only known from three collections, all originating in the southern...
Article
Full-text available
Varios meses de trabajos de campo en La Palma (Islas Canarias occidentales) han posibilitado el descubrimiento de nuevas plantas vasculares no nativas. Alstroemeria aurea, A. ligtu, Anacyclus radiatus subsp. Radiatus, Chenopodium album subsp. borbasii, Cotyledon orbiculata, Cucurbita ficifolia, Cynodon nlemfuensis, Datura stramonium subsp. tatula,...
Article
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New records of interesting xenophytes in the Iberian Peninsula. Botanical inventories in various parts of Spain mainly between 2005 and 2007 yielded numerous chorological novelties. Cyperus prolifer is probably reported for the first time in Europe. Chenopodium simplex, Dactyloctenium aegyptium, Digitaria violascens, Eragrostis frankii, Ipomoea x l...
Article
Full-text available
ABSTRACT: The identity of a recently detected population of Abutilon arboreum in the Valencian area was critically reassessed. It was shown that the plants in fact belong to the South American A. grandifolium, a species that has become a widespread weed in warm-temperate and subtropical regions across the world. Keywords: Abutilon grandifolium; ali...
Article
Full-text available
Opuntia spinulifera and O. streptacantha are reported for the first time from Spain. Both are more or less naturalized in scattered localities in Ayamonte (province of Huelva, SW Spain) where they were previously confused with O. huajuapensis. Claims of the latter from other Spanish regions are shown to be also erroneous. These three species, as we...
Article
Full-text available
Artemisia princeps, originally native to eastern Asia (China, Japan, and Korea), has been present since at least two decades in several localities in Belgium and the Netherlands. It is in many respects intermediate between native A. vulgaris and introduced A. verlotiorum and, as a result, passed unnoticed for quite a long time. Diagnostic features...
Book
Full-text available
An original, matrix-based key is presented for the identification of all species of Oenothera section Oenothera subsection Oenothera (Onagraceae) in Europe. The taxonomy follows the so-called European school which means that a narrow species concept is adopted. All species are copiously illustrated with original photographs by the authors and detai...
Article
Botanical surveys undertaken in Central and Northern Tunisia (North Africa), mostly between 2012 and 2018, have revealed 12 non-native succulent (sensu lato) taxa that had not been reported before, either from the whole Mediterranean area, or from North Africa and Tunisia. The new taxa here reported belong to Aizoaceae, Basellaceae, Crassulaceae an...
Article
Recent field work in the Spanish province of Tarragona yielded new records for several interesting cacti (Cactaceae). New provincial records are presented for the following taxa (species preceded by an * have not been reported before from the autonomous region of Catalonia): Cylindropuntia pallida, *C. prolifera, *C. tunicata, Mortolopuntia schicke...
Article
Full-text available
This is the eleventh of a series of miscellaneous contributions, by various authors, where hitherto unpublished data relevant to both the Med-Checklist and the Euro+Med (or Sisyphus) projects are presented. This instalment deals with the families Anacardiaceae, Asparagaceae (incl. Hyacinthaceae), Bignoniaceae, Cactaceae, Compositae, Cruciferae, Cyp...