Utricularia elephanthoides (Lentibulariaceae), a new species from the Guayana Shield
Background and Aims: Utricularia (Lentibulariaceae) includes ca. 240 carnivorous species of cosmopolitan distribution. The Guayana Shield has 48 species, about 20% of the world total. Of the 35 groups into which the genus is divided, Utricularia sect. Orchidioides is one of the best known and studie...
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| Format: | Online |
| Jezik: | spa |
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Instituto de Ecología, A.C.
2022
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| Online pristup: | https://abm.ojs.inecol.mx/index.php/abm/article/view/2049 |
| _version_ | 1799771417081806848 |
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| author | Grande Allende, José Ramón |
| author_facet | Grande Allende, José Ramón |
| author_sort | Grande Allende, José Ramón |
| collection | ABM |
| description | Background and Aims: Utricularia (Lentibulariaceae) includes ca. 240 carnivorous species of cosmopolitan distribution. The Guayana Shield has 48 species, about 20% of the world total. Of the 35 groups into which the genus is divided, Utricularia sect. Orchidioides is one of the best known and studied, as it usually has large and striking flowers. In this paper, the identity of one of the species in this section, present in the Guayana Shield, is clarified. Methods: The taxonomic literature, herbarium material, and photographs of cultivated plants from the study area (Bolívar and Amazonas states of Venezuela, in the central portion of the Guayana Shield) available on the internet, were reviewed. Additionally, and for comparative purposes, material from the most closely related species (Utricularia asplundii, U. jamesoniana and U. uxoris) was also reviewed.Key results: Utricularia elephanthoides sp. nov., which is characterized by the photosynthetic organs with an acute apex, upper lip of the corolla shallowly tetralobulate, applied to the lower lip, and spur ≤1.5 times the length of the lower lip of the corolla, is described and illustrated. This new species, together with Utricularia asplundii, U. jamesoniana and U. uxoris, forms a natural group with relatively small flowers and deeply trilobulate lower corolla lobe, which is named here “U. jamesoniana complex”. A table of morphological characters, a key and two maps are presented, by means of which these four species can be compared and differentiated.Conclusions: The Guayanan populations of Utricularia sect. Orchidioides with a deeply trilobulate lower corolla lip and a spur with basal (conical) and apical (subulate) portions of similar length should be assigned to the new concept (U. elephanthoides), so far only known from Venezuela. This species is part of the “Utricularia jamesoniana” complex, which is monophyletic and widely distributed in the Neotropics. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-2049 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 2022 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-20492022-07-14T09:13:59Z Utricularia elephanthoides (Lentibulariaceae), a new species from the Guayana Shield Utricularia elephanthoides (Lentibulariaceae), especie nueva del Escudo Guayanés Grande Allende, José Ramón Guayana Pantepui tepui Guayana, Lentibulariaceae, Pantepuy, tepuy, Utricularia sect. Orchidioides, Venezuela. Venezuela Guayana Pantepuy tepuy Guayana, Lentibulariaceae, Pantepuy, tepuy, Utricularia sect. Orchidioides, Venezuela. Venezuela Background and Aims: Utricularia (Lentibulariaceae) includes ca. 240 carnivorous species of cosmopolitan distribution. The Guayana Shield has 48 species, about 20% of the world total. Of the 35 groups into which the genus is divided, Utricularia sect. Orchidioides is one of the best known and studied, as it usually has large and striking flowers. In this paper, the identity of one of the species in this section, present in the Guayana Shield, is clarified. Methods: The taxonomic literature, herbarium material, and photographs of cultivated plants from the study area (Bolívar and Amazonas states of Venezuela, in the central portion of the Guayana Shield) available on the internet, were reviewed. Additionally, and for comparative purposes, material from the most closely related species (Utricularia asplundii, U. jamesoniana and U. uxoris) was also reviewed.Key results: Utricularia elephanthoides sp. nov., which is characterized by the photosynthetic organs with an acute apex, upper lip of the corolla shallowly tetralobulate, applied to the lower lip, and spur ≤1.5 times the length of the lower lip of the corolla, is described and illustrated. This new species, together with Utricularia asplundii, U. jamesoniana and U. uxoris, forms a natural group with relatively small flowers and deeply trilobulate lower corolla lobe, which is named here “U. jamesoniana complex”. A table of morphological characters, a key and two maps are presented, by means of which these four species can be compared and differentiated.Conclusions: The Guayanan populations of Utricularia sect. Orchidioides with a deeply trilobulate lower corolla lip and a spur with basal (conical) and apical (subulate) portions of similar length should be assigned to the new concept (U. elephanthoides), so far only known from Venezuela. This species is part of the “Utricularia jamesoniana” complex, which is monophyletic and widely distributed in the Neotropics. Antecedentes y Objetivos: Utricularia (Lentibulariaceae) incluye ca. 240 especies carnívoras de distribución cosmopolita. El Escudo Guayanés cuenta con 48, aproximadamente 20% del total mundial. De los 35 grupos en los que se divide el género, Utricularia sect. Orchidioides es uno de los más conocidos y mejor estudiado, pues suele presentar flores grandes y llamativas. En el presente trabajo se aclara la identidad de una de las especies de esta sección, presente en el Escudo Guayanés.Métodos: Se revisó la literatura taxonómica, material de herbario y fotos de plantas cultivadas disponibles en internet, procedentes del área en estudio (estados Bolívar y Amazonas de Venezuela, en la porción central del Escudo Guayanés). Adicionalmente, y con fines comparativos, se revisó material de las especies más afines (Utricularia asplundii, U. jamesoniana y U. uxoris). Resultados clave: Se describe e ilustra Utricularia elephanthoides sp. nov., la cual se caracteriza por presentar órganos fotosintéticos de ápice agudo, labio superior de la corola superficialmente tetralobulado, aplicado sobre el labio inferior, y espolón ≤1.5 veces el largo del labio inferior de la corola. Esta nueva especie conforma, junto a Utricularia asplundii, U. jamesoniana y U. uxoris, un grupo natural con flores relativamente pequeñas y lóbulo inferior de la corola profundamente trilobulado, el cual es nombrado aquí “complejo U. jamesoniana”. Se presenta un cuadro de caracteres morfológicos, una clave y dos mapas, por medio de los cuales se pueden comparar y diferenciar estas cuatro especies. Conclusiones: Las poblaciones guayanesas de Utricularia sect. Orchidioides con el labio inferior de la corola profundamente trilobulado y espolón con las porciones basal (cónica) y apical (subulada) de longitud similar deben ser asignadas al nuevo concepto (U. elephanthoides), hasta ahora solo conocido de Venezuela. Esta especie forma parte del complejo “Utricularia jamesoniana”, el cual es monofilético y de amplia distribución en el Neotrópico. Instituto de Ecología, A.C. 2022-06-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf text/xml application/epub+zip https://abm.ojs.inecol.mx/index.php/abm/article/view/2049 10.21829/abm129.2022.2049 Acta Botanica Mexicana; No. 129 (2022) Acta Botanica Mexicana; Núm. 129 (2022) 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/2049/4208 https://abm.ojs.inecol.mx/index.php/abm/article/view/2049/4239 https://abm.ojs.inecol.mx/index.php/abm/article/view/2049/4209 https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Grande Allende, José Ramón Utricularia elephanthoides (Lentibulariaceae), a new species from the Guayana Shield |
| title | Utricularia elephanthoides (Lentibulariaceae), a new species from the Guayana Shield |
| title_full | Utricularia elephanthoides (Lentibulariaceae), a new species from the Guayana Shield |
| title_fullStr | Utricularia elephanthoides (Lentibulariaceae), a new species from the Guayana Shield |
| title_full_unstemmed | Utricularia elephanthoides (Lentibulariaceae), a new species from the Guayana Shield |
| title_short | Utricularia elephanthoides (Lentibulariaceae), a new species from the Guayana Shield |
| title_sort | utricularia elephanthoides (lentibulariaceae), a new species from the guayana shield |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/2049 |
| work_keys_str_mv | AT grandeallendejoseramon utriculariaelephanthoideslentibulariaceaeanewspeciesfromtheguayanashield AT grandeallendejoseramon utriculariaelephanthoideslentibulariaceaeespecienuevadelescudoguayanes |
