Joel Calvo

Joel Calvo
Conservatoire et Jardin botaniques de la Ville de Genève | CJB

Ph.D.

About

93
Publications
21,068
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283
Citations
Citations since 2017
59 Research Items
241 Citations
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
201720182019202020212022202301020304050
Additional affiliations
March 2017 - March 2020
Pontificia Universidad Católica de Valparaíso
Position
  • PostDoc Position
December 2016 - November 2017
Universidade Federal da Bahia
Position
  • PostDoc Position

Publications

Publications (93)
Article
Full-text available
The name Senecio dombeyanus DC. has disparately been treated over time depending on the authors because of the uncertainty concerning the provenance of the original material, which was collected during the “Expedición Botánica al Virreinato del Perú”, namely by Joseph Dombey. This issue is clarified here, as well as its implications on the Bolivian...
Article
As part of ongoing studies on the genus Senecio in Chile, we here synonymize the name S. phylloleptus with S. reicheanus, as well as S. behnii with the retrieved name S. eriocladus. Furthermore, the original concept of S. coquimbensis is reestablished and its nomenclatural implications detailed. Finally, the identity and presence of S. saxicola in...
Article
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La especie Senecio bonplandianus ha sido malinterpretada o desatendida durante mucho tiempo probablemente debido a la incertidumbre acerca de la procedencia del material tipo indicado en el protólogo. Se clarifica aquí su taxonomía y se trata como el nombre prioritario para la entidad conocida hasta la fecha como S. minesinus, nombre que se trata c...
Article
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The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impedime...
Article
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The invaluable labor of Antonio Raimondi (1824 – 1890) to study and record the natural history of Peru is well known, however, his contribution to the plant taxonomy has not been so well documented. Raimondi described five new species, which mostly were wrongly ascribed to other botanists or just overlooked. A recent contribution has been addressed...
Article
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In the framework of the Andean Senecioneae, the species Monticalia nitida, Senecio apolobambensis, and S. josei are added as new records to the Peruvian flora. The following names are synonymized: Senecio tergopurpureus with Dendrophorbium biserrifolium, both Senecio yunguyensis and S. allapajanus with S. herrerae, and S. diplostephioides with S. p...
Article
The Neotropical genus Pentacalia Cass. (Compositae, Senecioneae) is distributed from southern Mexico to northwestern Argentina, plus two disjunct species that thrive in Brazil. Most species diversity occurs in the montane forests of Colombia, Ecuador, and Peru. It comprises scandent woody plants characterized by displaying alternate leaves (opposit...
Article
Werneria villosa is a species well defined by its yellow ray limbs. In the recent monograph of the genus Werneria, a few populations from northwestern Argentina displaying white ray limbs were tentatively also included in this species following previous authors and because of lack of information for making an accurate taxonomic decision. However, a...
Article
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Senecio alatopetiolatus se cita por primera vez en Colombia. Se incluye una discusión de su variabilidad morfológica y se aportan fotografías de plantas en su hábitat.
Article
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De acuerdo con la revisión exhaustiva del material original y los protólogos, así como el estudio de cuantos especímenes tuvimos a nuestra disposición, la especie Senecio gonocaulos DC. se transfiere al género Pentacalia y el nombre P. poeppigiana A.Granda se incluye en la sinonimia de la misma. Además, se designa un lectótipo para S. gonocaulos y...
Article
In order to move towards an accurate delimitation of Monticalia and its morphologically closest genera, the following names are transferred to Monticalia: Pentacalia chimborazensis, Senecio aclydiphyllus, S. miniauritus and S. pleniauritus. The four species thrive in the highlands of the central Andes and were hitherto treated under the genus Penta...
Book
Full-text available
The urge to organise the world around us is an essential part of human nature. Naming and categorising enable us to store and access information ef ciently. The need to name and categorise extends to the natural world and, in particular, to living organisms. The science underpinning this area of knowledge is called Taxonomy, and is as old as humani...
Article
After the monographic revision of the genus Senecio Linnaeus (1753: 866) from Chile by Cabrera (1949), several nomenclatural adjustments were made (Jeffrey 1992, Soldano 1998, Calvo 2020, Wu et al. 2020). Herein, we point out the illegitimacy of two names that have widely been accepted in the literature dealing with Senecio in the Southern Cone of...
Article
Two new species of Senecio are described from Peru. One thrives in the high Andes of the southeastern department of Lima and the other one occurs in the lomas vegetation of southern Ica. Both species are compared with the morphologically closest taxa and useful characters for their proper identification are provided. A distribution map, illustratio...
Article
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Thus far, the genus Senecio L. in Chile has only been thoroughly revised by the Argentinian botanist Cabrera, who published a monograph in 1949. He treated 11 names as dubious, 10 of which have remained unresolved until now. Herein, the taxonomic position of six names is elucidated, i.e., S. alsophilus Phil., S. araucanus Phil., S. leiophyllus Turc...
Article
Nordenstamia valenzuelae sp. nov. is described from the Pui Pui Protection Forest in central Peru. It is a shrub characterized by opposite leaves (upper ones sessile), adaxial leaf surfaces and young stem parts covered by short-stipitate, basic T-shaped, golden-yellow trichomes, and densely white lanate abaxial leaf surfaces. The new species is com...
Article
Due to herbaria studies and recent field work carried out in Colombia, we record six species of Asteraceae new to the Colombian flora: Artemisia verlotiorum, Othonna capensis, Paragynoxys steyermarkii, Pentacalia disciformis, Senecio tamoides, and Solidago chilensis. Morphological discussions, distribution information, and nomenclatural notes if re...
Article
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The Andean genus Xenophyllum (Compositae, Senecioneae) is distributed along the high-Andes from northeastern Colombia to northern Chile and northwestern Argentina, mainly thriving in the paramo and puna ecoregions. It comprises suffruticose plants forming dense mats, hummocks, or clumps of erect stems. They are characterized by displaying involucra...
Article
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Oritrophium (Kunth) Cuatrec. is a neotropical genus with a disjunct distribution in the Andes (Bolivia, Colombia, Ecuador, Peru, and Venezuela), the center of Mexico, and the mountains of the Guiana Shield in Venezuela, with a remarkable diversity in Ecuador. We present a taxonomic study for Ecuador that represents the first modern and exhaustive r...
Article
Senecio helianthemoides Wedd. is transferred to the genus Chersodoma Phil. on the basis of its functionally dioecious breeding system and rounded, papillose-style branches. The new combination C. helianthemoides (Wedd.) J. Calvo & M. Zárate is published, and the recently published name C. tarijensis M. Zárate is synonymized with it.
Article
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Carex divisa se registra por primera vez en Chile. Se incluye una discusión taxonómica para su apropiada determinación.
Article
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Senecio festucoides is described from northern Chile. The new species is morphologically similar to the discoid caespitose Andean species and belongs to the subgroup displaying yellow corollas and yellowish anthers and style branches. It is characterized by a weak, not self-supporting stem, narrowly linear leaves, long pedunculate capitula with (17...
Article
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Two new species of Werneria (Compositae, Senecioneae) are described from the highlands of central Peru on the basis of morphological evidence, namely W. huascarana and W. rockhauseniana. In addition, the misinterpreted taxonomic entity W. weberbaueriana is properly circumscribed according to the protologue. A neotype is designated for the name W. w...
Article
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Two new species of Xenophyllum are described from the Andes, X. funkianum sp. nov. from Ecuador and X. lorochaqui sp. nov. from northwestern Argentina. Both species are compared with the morphologically closest taxa and useful characters for their proper identification are provided. Detailed illustrations and distribution maps are also presented, a...
Article
Ongoing studies of the tribe Senecioneae (Compositae) led us to record for the first time five species for Peru, i.e., Dendrophorbium scytophyllum, Pentacalia luteynorum, P. millei, P. riotintis, and Senecio puchei. In addition, the name P. lanceolifolia is synonymized with P. andrei, as well as P. hitchcockii and P. huamaliensis with P. theifolia,...
Article
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Three new species belonging to the tribe Senecioneae Cass. are recorded for the first time in Bolivia: Senecio jujuyensis Cabrera, Senecio moqueguensis Montesinos, and Werneria microphylla H.Beltrán & S.Leiva. Taxonomic discussions and distribution notes are provided for each species, as well as illustrations when available.
Article
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A new species of Senecio L. from northern Chile is described on the basis of morphological evidence. It is a caespitose species characterized by displaying vertical hypogeous stems, fleshy spatulate leaves, subentire or distantly and shallowly dentate, discoid capitula with yellowish disc florets, anthers, and style branches, and long-pilose achene...
Article
Werneria lanatifolia is described as a new species from the central Andes. It is a minute plant characterized by a lanate indumentum on the adaxial leaf surface and involucre. The new species is compared with the morphologically closest taxa and useful characters for its proper identification are provided. Detailed pictures of living plants, a dist...
Article
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The names Werneria melanandra and W. pygmophylla are transferred to the genus Senecio . They belong to the group of the discoid caespitose Andean Senecio , specifically to the subgroup with blackish anthers and style branches and whitish corollas. The recognition of S. digitatus as a distinct species is also discussed. Within the framework of the m...
Article
Two new species of Werneria are described from the central Andes. Both species are compared with the morphologically closest taxa and useful characters for their proper identification are provided. Detailed pictures of living plants and a distribution map are also presented.
Article
Two new Andean species belonging to the tribe Senecioneae (Compositae) are described herein, i.e., Dendrophorbium azoguesense from Ecuador and D. varicosum from Bolivia. The species Pentacalia todziae is recorded for the first time in Ecuador and the names Dendrophorbium onae and D. onae var. leonis synonymized to D. scytophyllum. Taxonomic discuss...
Article
A new species of Monticalia with minute, ciliate leaves, radiate capitula, and eight involucral bracts is described from the northern Andes of Ecuador. It is a striking shrub that has been oddly overlooked until now. It grows in the highlands of Papal-lacta, a very humid páramo characterized by harboring many lagoons. Photographs of living plants o...
Article
Much has been written about the taxonomic entity of Werneria denticulata albeit there is still a lack of consensus. On the basis of taxonomic evidence and the clarification of the provenance of the type material, we synonymize it under W. cochlearis. The names W. brachypappa and W. pygmaea var. rhodopappa are lectotypified.
Article
Full-text available
A new species of Senecio L. from the central Andes of Peru, S. carhuanishoensis H.Beltrán & J.Calvo sp. nov., only known from the Laraos District (Yauyos, Lima), is described and illustrated. It is a suffrutescent, rupicolous plant with the stems rather appressed to the rocks. It is characterized by its greyish-lanate indumentum covering the stem,...
Article
Full-text available
The Peruvian species Senecio chiribogae and S. tingoensis are transferred to Pentacalia, and Pentacalia vallejiana is placed under the former species. A taxonomic discussion is presented for both species as well as a key to the species of Pentacalia chiribogae group and a distribution map.
Article
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Fumaria muralis (Papaveraceae) and Lathyrus latifolius (Leguminosae) are recorded for the first time in Chile as alien species. Detailed pictures of both species are provided, together with keys to the species of Fumaria and Lathyrus in Chile and a map with the location of the new records.
Article
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The Global Strategy for Plant Conservation (GSPC) was established by the Conference of Parties in 2002 to decrease the loss of plant diversity, reduce poverty and contribute to sustainable development. To achieve this overarching goal, the GSPC has established a series of targets, one of which is to ensure that plant diversity is well understood, s...
Article
Xenophyllum esquilachense is a poorly known Andean species that was hitherto considered endemic to southern Peru. It is recorded for the first time from Bolivia and northern Chile, and the name Senecio pfisteri is synonymized with it. New insights on its global occurrence, ecology, and taxonomy are provided, as well as pictures of living plants and...
Article
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As a result of herbarium studies and field work carried out by the signing authors, two Asteraceae species are recorded for the first time in Colombia, i.e., Floscaldasia azorelloides Sklenár & H.Rob. (tribe Astereae) and Senecio subinvolucratus Cuatrec. (tribe Senecioneae). Taxonomic notes, pictures, conservation status, and distribution maps are...
Article
Three new species of Senecio belonging to the group of discoid caespitose species are described from the high Andes of Bo-livia. One of them is also recorded from southern Peru. Special emphasis is placed on the color of the anthers, style-branches, and corollas, which are useful characters that were undervalued in previous taxonomic treatments dea...
Article
Recent collections carried out in southern Colombia (Putumayo) and southern Ecuador (Zamora-Chinchipe) lead us to describe two new species of Pentacalia based on morphological evidence. One of them displays lateral, axillary synflorescences and disciform capitula, whereas the other keys out in the group of terminal synflorescences and disciform cap...
Article
Two new species of Pentacalia are described herein on the basis of morphological evidence. These new findings are the result of field work and recent herbarium studies carried out at USM. Both species are very distinctive and any confusion with the other known taxa of the genus is unlikely. Both species are hitherto only known from the type localit...
Article
The taxonomic identity of Scopoli's Senecio littoralis is discussed in order to support that this neglected name should be synonymized under Dittrichia viscosa. On the other hand, the name Senecio falklandicus is retrieved as the priority name for a Falkland species widely accepted in the latest years under the illegitimate name S. littoralis descr...
Article
The genus Campuloclinium belongs to the tribe Eupatorieae, one of the largest and most complex tribes of the Compositae family in the Neotropical Region. This genus encompasses suffruticose perennial plants and one annual herbaceous species. They are mainly distributed in southeastern South America, the Brazilian cerrado and campos rupestres being...
Article
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Reliable plant species identification from seeds is intrinsically difficult due to the scarcity of features and because it requires specialized expertise that is becoming increasingly rarer, as the number of field plant taxonomists is diminishing (Bacher 2012, Haas and Häuser 2005). On the other hand, seed identification is relevant in some science...
Article
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Ehrharta longiflora Sm. (Poaceae) is recorded for the first time in South America. A few naturalized populations were located in disturbed areas of Valparaíso (Central Chile). A brief taxonomic discussion, images, and a location map of the new record of this African grass are provided here.
Article
Recent collection activities carried out in southern Espírito Santo State (Brazil) lead us to describe a new species of Dendrophorbium. It has been overlooked and misidentified as D. bradei or D. fruticosum until now. Morphological characters are provided to easily distinguish each other, as well as detailed pictures of the new species. It occurs i...
Article
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Due to ongoing studies on the austral species of Xenophyllum and Werneria, we noticed that some taxonomic and nomenclatural adjustments are required. Herein, we propose a new combination, Xenophyllum juniperinum.
Article
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Chaetanthera peruviana, a species considered hitherto endemic to Peru, was collected in northern Chile (region of Arica-Parinacota) for the first time. Detailed pictures of the two species occurring in that area, C. peruviana and C. perpusilla, are provided, as well as a key to distinguish both species and a map with the location of the new record.
Article
Campuloclinium alternifolium was re-collected in southeastern Tocantins State, Brazil, after the Gardner collection in 1840. This new material reveals opposite, slightly decussate cauline leaves in contrast with the original description. Ecological insights are provided in order to locate new populations of this poorly known species, and detailed p...
Article
Oritrophium yacuriense is described as a new species from the Andes of southern Ecuador. Morphological characters are used in order to distinguish it from the closest species O. repens, which differs mainly in the leaf morphology. The new species occurs in wet herbaceous páramos of the lagoon complex of the Yacuri National Park.
Article
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F. W. Domke described three Senecio species (Compositae, Senecioneae) from Ecuador on the basis of Diels’s collections. Since the type material at B was apparently destroyed in 1943, the names Senecio angelensis, S. dielsii and S. tipocochensis are neotypified. The nomenclature of each taxonomic entity is updated, and new synonyms are provided for...
Article
Abstract A new species of Senecio gr. Lasiocephalus from the Central Andes of Colombia is described. It is a scandent subshrub recognized by its lanceolate leaves, clearly petiolated the middle cauline ones, asymetrical at the lamina base, floccose above and lanate beneath, by its synflorescence branches densely lanate, and glabrescent or slightly...
Article
Brother Marie-Victorin described six species from Quebec, Canada. We herein designate lectotypes for Aster gaspensis, Botrychium minganense, Cirsium minganense, and Gentiana gaspensis. The holotypes of Erigeron provancheri and Lathyrus rollandii are clarified. Isolectotypes, syntypes, and paratypes also are indicated, if appropriate, for each speci...
Article
Working on the Ecuadorian Senecio species, I focused my attention on Senecio hamamelidifolius Kunth in Humboldt et al. (1818: 140), a poorly known species that Nordenstam (1999) pointed out to be doubtfully described from Ecuador as indicated with a question mark in the protologue. Further research on this matter led me to realize that the same spe...
Article
Senecio sangayensis, a putative endemic species from the eastern Ecuadorian Cordillera, is described as a new species. It is chiefly distinguished by its habit, striking racemiform synflorescence composed of dense cymose-corymbs subtended by triangular-ovate bracts, and life-history strategy. This new species is known from the páramo of the Sangay...
Article
The taxonomic position of the Lasiocephalus species has changed over time. On the basis of the available phylogenetic studies and considering that Lasiocephalus as a genus lacks of clear morphological limits, we treat them as a group within Senecio. In the absence of a comprehensive taxonomic revision of the group, we provide a nomenclator and new...
Article
Senecio alatopetiolatus is described as a new species from the Ecuadorian Andes on the basis of morphological characters. It is a subshrub characterized by having a scandent habit, discoid nodding capitula, middle cauline leaves with winged petioles, and an indumentum composed of glandular-hirsute and sericeous trichomes.
Article
Senecio eliseae is described as a new species from the southern Ecuadorian Andes. It is a suffrutescent herb characterized by erect branches that are leaved only in the upper half, yellow discoid nodding capitula, and glandular-hirsute indumentum on the stem, leaves, and synflorescence. Detailed photographs of plants from the type locality are prov...
Article
The taxonomic complexity of the Senecio doria group (Compositae, Senecioneae) is reflected in the heterogeneous treatments that have been proposed and the poor knowledge of some species. This species group consists of perennial herbs distributed in Europe, western and central Asia, and northwestern Africa. The first worldwide revision of this group...
Article
The complexity of the evolutionary history of Senecio is reflected in its conflicted taxonomy. Within this genus, Senecio section Crociseris (Compositae, Senecioneae), a group of perennial herbs distributed in Europe, western and Central Asia, and northwestern Africa, was not fully revised. A worldwide revision of this section recognizing 28 specie...
Chapter
Full-text available
Article
Three new combinations (Compositae, Senecioneae), Senecio doronicum (L.) L. subsp. longifolius (Willk.) J. Calvo, S. macedonicus Griseb subsp. barckhausiifolius (Boiss. & Heldr.) J. Calvo, and S. racemosus (M. Bieb.) DC. subsp. kirghisicus (DC.) J. Calvo, are here proposed, as well as the replacement name S. doronicum subsp. orientalis J. Calvo for...
Article
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Of thirty-eight Senecio taxa recognized in the Iberian Peninsula and Balearic Islands, eight of their accepted species names are typified herein. Senecio adonidifolius, S. aquaticus, S. boissieri, S. flavus, S. gallicus, S leucophyllus, S. malacitanus, and S. minutus are lectotypified, and an epitype is designated for S. aquaticus.
Article
Polygala subgen. Chamaebuxus comprises five perennial species, distributed in Europe and northwestern Africa. Polygala webbiana was hitherto thought to be endemic to Morocco. In this paper, we report the first known population of this species in Europe, present in the province of Málaga (Spain). Detailed pictures of the flower, fruit, and seed are...
Article
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Senecio sect. Crociseris is one of the three main sections of western Eurasian/northern African Senecio species. Previous studies indicated that species commonly assigned to this section are closely related to those of sect. Doria. The aim of the research presented here was to test the morphology-based delimitation of sect. Crociseris using phyloge...
Article
There are six species of Bellis inhabiting the Iberian Peninsula, four of their accepted names are typified here. Bellis microcephala Lange, B. perennis L., and B. cordifolia (Kunze) Willk. are lectotypified, while an epitype is designated for B. sylvestris Cirillo. Some diagnostic characters are discussed in order to provide a proper identificatio...
Article
The Linnaean names Doronicum incanum and Senecio byzantinus are typified in this paper.

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Project
Typification of 18th and 19th century plant names, especially those relating to the Linnaean and JE Smith herbariums at the Linnean Society of London.