Maxime Rome

CNRS · Station alpine Joseph Fourier

From the "Description des plantes d'Amérique" by Plumier, in 1693, to the "Species Plantarum" by Linnaeus in 1753, several dubious synonymies of Passiflora laurifolia L. were proposed, generating a persisting confusion. A revision of the process, which led to the Linnaean description of this species, shows that the type finally chosen by Cusset doe...

Within the huge diversity of genus Passiflora, series Laurifoliae constitutes a strikingly uniform group, widely distributed in neotropical rain forests, at low to moderate elevations. Given its morphological and ecological unity, Killip mentionned it as an «exceedingly difficult» group. The lack of clear morphological criteria has not helped in de...

Passiflora kapiriensis is a new Guianese species in the series Laurifoliae of subgenus Passiflora, found near Saint-Georges-de-l’Oyapock. The filaments of the fourth corona row are 1 cm long and oriented to the andro­gynophore, which is reminiscent of P. acuminata, P. cerasina, P. fissurosa, P. killipiana and P. nitida. It differs from these close...

Ethnopharmacoalogical relevance: The genus Nauclea in Africa comprises seven species. Among them, N. latifolia, N. diderrichii and N. pobeguinii are widely used by the local population in traditional remedies. Preparation from various parts of plants (e.g. roots, bark, leaves) are indicated by traditional healers for a wide range of diseases inclu...

Los maracuyás o granadillas de importancia económica se encuentran en el subgénero Passiflora, y son caracterizados por flores grandes de colores vistosos y frutos de tamaño mediano a grande. Estas especies pertenecen principalmente a la supersección Laurifolia, donde sobresalen las series Quadrangulares (P. quadrangularis y P. alata), Tiliifoliae...

Despite several studies on the Ajuga L. genus, the chemical composition of Ajuga pyramidalis, an alpine endemic species, is still largely unknown. The purpose of this study was to therefore deeper describe it, particularly from the phytochemistry and bioactivity perspectives. In that respect, A. pyramidalis was investigated and 95% of the extracted...

The European Alps are highly rich in species, but their future may be threatened by ongoing changes in human land use and climate. Here, we reconstructed vegetation, temperature, human impact and livestock over the past ~12,000 years from Lake Sulsseewli, based on sedimentary ancient plant and mammal DNA, pollen, spores, chironomids, and microcharc...

Ranunculaceae comprise ca. 2,500 species ( ca. 55 genera) that display a broad range of floral diversity, particularly at the level of the perianth. Petals, when present, are often referred to as “elaborate” because they have a complex morphology. In addition, the petals usually produce and store nectar, which gives them a crucial functional role i...

Within the very uniform series Laurifoliae, Passiflora acuminata (treated as a synonym of P. laurifolia in the Flora of China), P. tolimana, P. gleasonii and P. metae appear particularly similar. A review of their descriptions and the associated specimens confirms their lack of morphological differentiation and leads us to formally resurrect P. acu...

There is still limited consensus on the evolutionary history of species-rich temperate alpine floras due to a lack of comparable and high-quality phylogenetic data covering multiple plant lineages. Here we reconstructed when and how European alpine plant lineages diversified, i.e., the tempo and drivers of speciation events. We performed full-plast...

There is still limited consensus on the evolutionary history of the species-rich temperate alpine floras due to a lack of comparable and high-quality phylogenetic data covering multiple plant lineages. Here we reconstructed when and how European alpine plant lineages diversified, i.e., the tempo and drivers of speciation events. We performed full-p...

Most of the ca. 600 Passiflora species are distributed in Central and South America. The last classification proposes five subgenera, themselves divided into supersections, sections and series (Feuillet et MacDougal, 2003; Krosnick et al., 2009). The latter often show limited morphological variation around a relatively well-defined pattern. The ser...

The active component extraction from plants is the first crucial step in natural product research. For non-targeted extraction with an objective to isolate and characterize as many compounds as possible, the most classical technique, and the simplest to implement, is the Soxhlet extraction; however, it does not allow retrieving all the compounds fr...

Until recently, Passiflora cerasina was known only from two herbarium specimens. Three botanical expeditions in French Guiana, in 2008, 2009, and 2017, have greatly improved our knowledge on its geographical distribution and morphological variation. A key to the Guianese species of series Laurifoliae is given. As the holotype mentioned in the origi...

While soil ecosystems undergo important modifications due to global change, the effect of soil properties on plant distributions is still poorly understood. Plant growth is not only controlled by soil physico‐chemistry but also by microbial activities through the decomposition of organic matter and the recycling of nutrients essential for plants. A...

Helianthemum nummularium is a European shrub growing at high altitude where it copes with a high level of stress. It was found to be overexpressed in ungulates diets compared to more abundant surrounding plants. These elements combined with the fact that H. nummularium from the Alps has never been investigated prompted us to study the phytochemical...

Depuis 120 ans, le jardin du Lautaret emmène ses visiteurs à la découverte de la flore de toutes les montagnes du globe, diffuse les savoirs et contribue à la compréhension du monde. Il faut le mériter, au col du Lautaret, au fond du parking, quelques virages… et enfin on découvre ce lieu magique, un condensé de toutes les montagnes du monde. De l...

Passiflora riparia was incompletely described by Masters, who cited specimens of Martius and Spruce. While Spruce 2191, the unique syntype with an observable corona, exhibits a reduced outermost series of filaments, the accompanying iconography represents two equal outer series. Later descriptions have neither added significant information nor corr...

Passiflora L. is the most important genus of the family Passifloraceae, native to tropical America, SouthEast Asia and Oceania. Mainly distributed in the neotropics, from coastal regions to elevations about 4,300 m, its 576 species have adapted to highly diverse environments and forged many strong interactions with animals (herbivory, mutualisms of...

the new lectotype of P. laurifolia: Illustration of Passiflora laurifolia in “Description des Plantes d'Amérique” by Plumier (1693).

Passiflora L. is the most important genus of the family Passifloraceae, native to tropical America, South-East Asia and Oceania. Mainly distributed in the neotropics, from coastal regions to elevations about 4,300 m, its 576 species have adapted to highly diverse environments and forged many strong interactions with animals (herbivory, mutualisms o...

Depuis sa création en 1899, le jardin botanique alpin du Lautaret a acquis une renommée internationale. C’est donc tout naturellement que la SAJF, unité mixte de recherche UGA/CNRS entretient une expertise en botanique mise au service du plus grand nombre : étudiants, chercheurs et grand public.