Marc Reynders

• PhD
• Scientific management of the greenhouse collections at Meise Botanic Garden

Background – During field work performed in 2018 by the University of Lubumbashi in the Katanga region of D.R. Congo, a peculiar Cyperus species was discovered at the edges of a thermal spring in the southwest corner of the Upemba graben, near the city of Luena. Material and methods – Herbarium material from the collected plant was studied and used...

Background-During the past decade several molecular phylogenetic studies tackled the complex relationships within tribe Cypereae. Based on these studies, previously accepted segregate genera such as Pycreus were sunk into the genus Cyperus. Recently, while revising the West African species of Cyperus, three taxa previously placed in Pycreus were id...

Background-The genus Hypolytrum is studied during the preparation of the Cyperaceae treatment in Flore d'Afrique centrale. It is kept separate from Mapania and its African members have been divided amongst three sections. Methods-Herbarium material from BR and BRLU has been studied. A preliminary IUCN Red List assessment is performed according to t...

Recent molecular phylogenetic analyses showed that Lipocarpha and Volkiella are nested in a paraphyletic Cyperus s.s. and therefore should be viewed as part of a broadly circumscribed genus Cyperus (Cyperaceae). In this paper, molecular phylogenetic analyses of Lipocarpha and Volkiella based on nuclear ribosomal ETS1f and plastid rpl32-trnL and trn...

The sedge genera Alinula, Ascolepis, Kyllinga, Lipocarpha, Pycreus, Queenslandiella, Remirea, Sphaerocyperus and Volkiella (Cyperaceae) were recognised at generic level because they possess specialised inflorescence and/or flower characters. However, recent molecular phylogenetic analyses show that these genera are all nested in a paraphyletic Cype...

Maximum likelihood and Bayesian inference analyses of nuclear ribosomal DNA (ETS1f) and plastid DNA (rpl32-trnL, trnH-psbA) sequence data are presented for ‘C4 Cyperus’ (Cyperaceae). The term ‘C4 Cyperus’ encompasses all species of Cyperus s.l. that use C4 photosynthesis linked with chlorocyperoid vegetative anatomy. Sampling comprises 107 specimen...

Cypereae form one of the largest and most complex tribes of the sedge family (Cyperaceae). Recently, two clades have been revealed within the tribe, the largest of which includes the giant genus Cyperus and its closest allies. However, thirteen genera of the generally accepted classification of Goetghebeur (1998) appear to be nested within Cyperus....

Background and aims – In Cyperaceae, the single-ovuled, usually triangular gynoecia are widely considered to have a basic number of three carpels, often reduced to two, resulting in dimerous pistils. However, laterally flattened dimerous pistils cannot be explained by any existing carpel reduction theories, because a single stigma in median positio...

A new genus, Dracoscirpoides Muasya, is described and illustrated. This genus accommodates two southern African species, Scirpus falsus and S. ficinioides, until now included in the holarctic Scirpus (Scirpeae) due to the presence of perianth parts. Recent molecular phylogenetic studies have established that these species form a clade closer to Sci...

and aims – Madagascar is a biodiversity hotspot with a high level of plant endemism. However, not all lineages of plants are equally represented and the highest diversity occurs in forest lineages. Cyperaceae frequently occur in grasslands and wetlands in Africa, and the tribe Hypolytreae and Carex subgenus Vigneastra are among the few predominantl...

and aims – Recent molecular studies validate a broad definition of Cyperus (Cyperaceae) uniting genera previously scattered in Cyperoideae. First indication of their affinity with Cyperus was obtained through embryography. Cyperus consists of a paraphyletic C3 Cyperus and monophyletic C4 Cyperus. In this study, we aim to check and clarify the putat...

Maximum likelihood and Bayesian analyses of nrDNA (ETS1f) and plastid DNA (rpl32-trnL, trnH-psbA) sequence data are presented for ‘C3 Cyperus’ (Cyperaceae). The term ‘C3 Cyperus’ indicates all species of Cyperus s.l. that use C3 photosynthesis linked with eucyperoid vegetative anatomy. Sampling comprises 77 specimens of 61 different taxa, represent...

This paper is the second in a series of papers on the nomenclature of the names of genera (Huygh & al., 2010) and subdivisions of genera in Cypereae (Cyperaceae). Here we present a survey of all published names of subdivisions of Cyperus, designate types where needed, and evaluate priority and legitimacy. Cyperus is the largest genus in Cypereae an...

Recent molecular studies reveal that Cyperus, the core genus of Cypereae (Cyperaceae), includes several segregate genera. This paper presents a survey of all published names of subdivisions of these segregate genera of Cyperus. It is the third paper in a series of papers on the nomenclature of names of genera and subdivisions of genera in Cypereae....

: Pycreus, Kyllinga, and Queenslandiella cluster together with Cyperus within the Cyperus s. lat. clade, one of the two large clades in Cypereae. However, in contrast with Cyperus, they have laterally flattened pistils/nutlets. Pycreus, Kyllinga and Queenslandiella form morphologically well circumscribed independent genera. In the context of a broa...

Mapaniids are critical to resolving floral and spikelet ontogeny in Cyperaceae Bruhl, JJ 4 , Vrijdaghs, A 2 , Prychid, C 1 , Reynders, M3 1 Jodrell Laboratory, Royal Botanic Gardens, Kew, UK; 2 Laboratory of Plant Systematics, Institute of Botany and Microbiology, KU Leuven, Belgium; 3 Universiteit Gent, Vakgroep Biologie, Onderzoeksgroep Zaa...

Pycreus sect. Tuberculati was created by Chermezon to contain a single species with derived nutlets: P. divulsus, a Malagasy endemic. Kükenthal transferred this species to his new section Muricati. However, a detailed study of the nutlet epidermis shows P. divulsus is not closely related to the other species Kükenthal placed in the latter section....

The morphological diversity and the presence of several convergent evolutionary lineages in the Cypereae tribe (Cyperaceae) have given rise to various conflicting classifications. These conflicts do not only arise in the delimitation of genera and their subdivisions, but also in the use of similar subdivisional names for different species groups an...

The morphological diversity and the presence of several convergent evolutionary lineages in the Cypereae tribe (Cyperaceae) have given rise to various conflicting classifications. These conflicts do not only arise in the delimitation of genera and their subdivisions, but also in the use of similar subdivisional names for different species groups an...

Cyperus absconditicoronatus Bauters, Reynders & Goetgh. and C. unispicatus Bauters, Reynders & Goetgh., two new species of Cyperus L. (Cyperaceae) from Angola and Zambia, are recognized. Cyperus absconditicoronatus is a tall species (55–100 cm) characterized by a scaled rhizome, a single terminal capitulum, a ciliated spikelet bract, and deciduous...

In Cyperoideae, one of the two subfamilies in Cyperaceae, unresolved homology questions about spikelets remained. This was particularly the case in taxa with distichously organized spikelets and in Cariceae, a tribe with complex compound inflorescences comprising male (co)florescences and deciduous female single-flowered lateral spikelets. Using on...

Kyllinga beninensis Samain, Reynders & Goetghebeur, a new species of Cyperaceae from the Borgou-Sud region of Bénin, is fully described and illustrated. This species can be recognized by the slender habit with swollen stem base, the tiny white head consisting of a single spike, and the spikelets with two glumes and one flower. Morphological differe...

Cyperus vandervekenii Reynders, Dhooge & Goetghebeur, from Rwanda, is fully described and illustrated. It can easily be distinguished from the related Cyperus graciliculmis Lye by its slender subquadrangular culms, single pseudolateral spikelets, and by the associated bract shorter than the spikelet.

Bulbostylis medusae Prata, Reynders & Goetghebeur from Venezuela is fully described and illustrated. This species differs from all other South American Bulbostylis Kunth species by the combination of long-ciliated leaf sheaths, leaf apices, bracts, and spikelet axes. The new species resembles B. sellowiana (Kunth) Palla, and a comparison of the two...

Five new taxa of the African genus Nemum (Cyperaceae) are recognised. The new combination Nemum angolense is made; three new species (Nemum atracuminatum, N. capitatum and N. raynalii) and a new subspecies (Nemum spadiceum subsp. spadolense) are described. The taxa are described and illustrated, and differences from their closest relatives are disc...

Twelve of the estimated 1500–1700 taxa in Peperomia show a particular feature: their terminal inflorescences seem to originate from the base of a leaf blade as a result of the presence of a sessile leaf at the base of these inflorescences. Three of these 12 taxa occur in Ecuador and four species are reported from Colombia. From Peru, two species ar...

There is a need to propose a new name in Cyperus L. for C. paucispiculatus Chermezon because the name currently used is an illegitimate later homonym of C. paucispiculatus Böckeler. A new name, C. limiticola Larridon & Reynders, is provided here.

Verloove, F. & Reynders, M.: Studies in the genus Paspalum (Paniceae, Poaceae) in Europe - 2. The Quadrifaria group. - Willdenowia 37: 423-430. - ISSN 0511-9618; © 2007 BGBM Berlin-Dahlem. doi:10.3372/wi.37.37203 (available via http://dx.doi.org/) The South American Paspalum quadrifarium has been reported as a naturalized xenophyte in Tuscany and L...

Verloove, F. & Reynders, M.: Studies in the genus Paspalum (Paniceae, Poaceae) in Europe - 1. Paspalum distichum subsp. paucispicatum, an overlooked taxon in France. - Willdenowia 37: 199-204. - ISSN 0511-9618; © 2007 BGBM Berlin-Dahlem. doi:10.3372/wi.37.37109 (available via http://dx.doi.org/) The present paper reports about the naturalization of...