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Background: Pavonia (Malvaceae) is a morphologically diverse genus with more than 200 species in America of which 32 have been previously reported in Mexico. In a field trip to the Reserva Estatal de Dzilam de Bravo, in northern Yucatan,... more
Background: Pavonia (Malvaceae) is a morphologically diverse genus with more than 200 species in America of which 32 have been previously reported in Mexico. In a field trip to the Reserva Estatal de Dzilam de Bravo, in northern Yucatan, a population of a Malvaceae species was detected that could not be unequivocally matched with any species known previously in the country. Questions: What is the identity of the Malvaceae species collected? Is it a taxonomic national or regional novelty? Species of study: Malvaceae, Malvoideae, Pavonia. Study site and dates: Yucatan Peninsula, Mexico, 2021–2022. Methods: Botanical specimens were collected and determined taxonomically through the use of specialized keys, and consulting of botanical collections. The conservation status was assessed using the IUCN methodology. Results: The specimens collected at the study site do not represent an undescribed species but instead Pavonia paludicola Nicolson ex Fryxell, which is a new record for Mexico. T...
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A new species of Calatola (Icacinaceae), C. microcarpa, from the departments of Loreto and Madre de Dios, Peru, and the state of Acre, Brazil, is described and illustrated. The new taxon is well documented with staminate and pistillate... more
A new species of Calatola (Icacinaceae), C. microcarpa, from the departments of Loreto and Madre de Dios, Peru, and the state of Acre, Brazil, is described and illustrated. The new taxon is well documented with staminate and pistillate flowers, and fruits. Its small leaves and fruit are similar to those found in Calatola laevigata and C. uxpanapensis. It is also compared with Calatola costaricensis, with which it sometimes grows sympatrically in Brazil and Peru. The
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A new species of Cyrtopodium from Belize, C. vestitum, is described and illustrated. Its flowers are indistinguishable from those of Cyrtopodium macrobulbon, but the pseudobulbs are relatively shorter and thicker, ovoid ellipsoid, bearing... more
A new species of Cyrtopodium from Belize, C. vestitum, is described and illustrated. Its flowers are indistinguishable from those of Cyrtopodium macrobulbon, but the pseudobulbs are relatively shorter and thicker, ovoid ellipsoid, bearing proportionately more, densely packed internodes, and the leaves do not present an articulation, i.e., an abscission layer, between the sheath and the blade and are thus marcescent. A comparative anatomy study of this tissue is presented, contrasting its presence in C. macrobulbon and the lack thereof in the new species. This species should be considered Endangered (EN) because of its restricted geographical distribution in central Belize. An updated key to the species of Cyrtopodium from North America, the Caribbean, and Central America is also included.
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The genus Oecopetalum Greenm. & C.H. Thomps. (Metteniusaceae) is distributed in the southeastern portion of Mexico to Central America (Guatemala, Nicaragua, and Costa Rica). Three species have been described and two have been reported as... more
The genus Oecopetalum Greenm. & C.H. Thomps. (Metteniusaceae) is distributed in the southeastern portion of Mexico to Central America (Guatemala, Nicaragua, and Costa Rica). Three species have been described and two have been reported as edible. We studied herbarium specimens of the genus Oecopetalum and performed a phylogenetic analysis based on the chloroplast genes matK and ndhF to answers to main questions: How many species are in the genus Oecopetalum? Is the genus Oecopetalum monophyletic? What are the generic relationships with other members of the family? Oecopetalum is a monophyletic genus with only two species. Pittosporosis is the sister group of Oecopetalum. The Trans-Atlantic relationship of Oecopetalum and Pittosporosis is a recurrent geographic pattern in the family Mettenuisaceae as well as in the family Icacinaceae. Our results, in concordance with fossil evidence and relationships of other groups, support the Boreotropical model of high-latitude terrestrial migrati...
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Hechtioideae (Bromeliaceae), as proposed by Givnish et al. (2007), included a single genus, Hechtia Klotzsch, characterized by dioecy, capsular fruits, winged or almost naked seeds, spiny foliar margins, and the lack of stellate... more
Hechtioideae (Bromeliaceae), as proposed by Givnish et al. (2007), included a single genus, Hechtia Klotzsch, characterized by dioecy, capsular fruits, winged or almost naked seeds, spiny foliar margins, and the lack of stellate sclerenchyma. Ramírez-Morillo et al. (2018) included as additional characters the terrestrial or lithophytic habit, often growing over limestone, gypsum, or volcanic rocks, as well as fragrant flowers (with the exception of at least H. Abstract. The most recent phylogenetic analyses using molecular and morphological data of Hechtioideae revealed the presence of three well-supported, morphologically distinct clades related to each other as follows: (Hechtia tillandsioides complex [Hechtia guate-malensis complex (Hechtia s.s.)]). (1) H. tillandsioides complex is recognized here at the generic level (under the reestablished name Bakerantha), characterized by its grass-like leaves, which are almost entire or minutely dentate, central inflorescences with ped-icel...
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This is the first phylogenetic analysis of the Megamexican Bromeliaceae genus Hechtia and includes 82.6 % of the known taxa. We used plastid (ycf1, rpl32-trnL intergenic spacer), and nuclear (PRK) DNA regions, as well as morphological... more
This is the first phylogenetic analysis of the Megamexican Bromeliaceae genus Hechtia and includes 82.6 % of the known taxa. We used plastid (ycf1, rpl32-trnL intergenic spacer), and nuclear (PRK) DNA regions, as well as morphological characters. We generated 244 new sequences for a total of 62 taxa (including 12 species of the outgroup). Results of combined data using parsimony and Bayesian inference reveal the monophyly of Hechtia, as well as identify five well supported clades: (1) a clade (H. tillandsioides complex) as the sister group to the rest of Hechtia; (2) a clade including the species of the H. guatemalensis complex, distributed in Southern Megamexico; the remaining taxa of the genus are retained in a clade which consists of three well-supported clades; (3) the H. glomerata complex distributed in the Gulf of Mexico drainage; (4) a clade of two species (H. deceptrix and H. epigyna) that share an inferior ovary and are distributed north of the Tehuantepec Isthmus in the Si...
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Se contribuye al conocimiento de la diversidad florística de la familia Orchidaceae presente en el sistema fluvio-lagunar-deltaico Palizada-del Este (SFLD-PE) a partir de los datos obtenidos de 15 recolectas realizadas en 10 sitios,... more
Se contribuye al conocimiento de la diversidad florística de la familia Orchidaceae presente en el sistema fluvio-lagunar-deltaico Palizada-del Este (SFLD-PE) a partir de los datos obtenidos de 15 recolectas realizadas en 10 sitios, durante agosto 2013 a febrero 2014. El listado incluye 27 especies en 17 géneros. Ocho especies son nuevos registros para el SFLD-PE: Bletia purpurea, Catasetum integerrimum, Habenaria pringlei, H. repens, Laelia rubescens, Myrmecophila tibicinis, Ornithocephalus inflexus y Rhetinantha friedrichsthalii. Los géneros con el mayor número de especies son Epidendrum (4) y Prosthechea (4). En lo que respecta al hábito de crecimiento, 23 especies son epífitas (85%), tres especies son terrestres o semiacuáticas (12%) y una especie es exclusivamente terrestre (3%). Las especies mejor representadas en los sitios son Brassavola grandiflora (8), Bletia purpurea (7) y Habenaria repens (6). Los hospederos con mayor número de especies son Pachira aquatica (20) y Zygia ...
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Marsdenia (Apocynaceae: Asclepiadoideae, Marsdeniae) is represented by five species in the Mexican Yucatan Peninsula (vs. seven in the whole of the province), one of which is herein proposed as new to science. The new species, Mardenia... more
Marsdenia (Apocynaceae: Asclepiadoideae, Marsdeniae) is represented by five species in the Mexican Yucatan Peninsula (vs. seven in the whole of the province), one of which is herein proposed as new to science. The new species, Mardenia calichicola Carnevali & Juárez-Jaimes, is only known from a narrow strip of sub-xerophytic forests over calcareous, rocky soils along the northwestern edge in the Yucatán state of Mexico. Marsdenia calichicola is morphologically similar and likely related to M. gallardoae and M. trivirgulata. Among other characters, it differs from Marsdenia gallardoae by the presence of a corona composed of cushion-like calli (corolla lacking calli in M. gallardoae) whereas M. trivirgulata has a glabrous or glabrescent corolla (vs. pubescent in M. calichicola); additional characters are herein discussed. We provide pertinent iconography to aid in the identification of the new species plus a key to diagnose the three species in the M. trivirgulata complex. The conser...
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Marsdenia (Apocynaceae: Asclepiadoideae, Marsdeniae) is represented by five species in the Mexican Yucatan Peninsula (vs. seven in the whole of the province), one of which is herein proposed as new to science. The new species, Mardenia... more
Marsdenia (Apocynaceae: Asclepiadoideae, Marsdeniae) is represented by five species in the Mexican Yucatan Peninsula (vs. seven in the whole of the province), one of which is herein proposed as new to science. The new species, Mardenia cali-chicola Carnevali & Juárez-Jaimes, is only known from a narrow strip of sub-xerophytic forests over calcareous, rocky soils along the northwestern edge in the Yucatán state of Mexico. Marsdenia calichicola is morphologically similar and likely related to M. gallardoae and M. trivirgulata. Among other characters, it differs from Marsdenia gallardoae by the presence of a corona composed of cushion-like calli (corolla lacking calli in M. gallardoae) whereas M. trivirgulata has a glabrous or glabrescent corolla (vs. pubescent in M. calichicola); additional characters are herein discussed. We provide pertinent iconography to aid in the identification of the new species plus a key to diagnose the three species in the M. trivirgulata complex. The conser...
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En el presente estudio se describen los sitios de manejo y la fl ora leñosa asociada a Oecopetalum mexicanum (cachichín) en la Sierra de Misantla, Veracruz; así como la recolección, el uso y la estimación de los frutos con base en... more
En el presente estudio se describen los sitios de manejo y la fl ora leñosa asociada a Oecopetalum mexicanum (cachichín) en la Sierra de Misantla, Veracruz; así como la recolección, el uso y la estimación de los frutos con base en muestreos de vegetación, entrevistas y observaciones de campo. El cachichín crece en cuatro tipos de manejo: selva, cachichinal (selva dominada por O. mexicanum), cafetal y huerto. Los muestreos de vegetación se llevaron a cabo en seis parcelas distribuidas en los primeros tres tipos de manejo, en una superfi cie total de 0.3 ha, fueron considerados todos los individuos ≥ 1 cm a la altura del pecho. En los mismos sitios se estimó la producción de frutos de 60 árboles. Debido a la reducida extensión de los huertos, se realizaron ocho muestreos fl orísticos independientes. La riqueza fl orística en conjunto fue de 79 especies pertenecientes a 35 familias distribuidas de la siguiente forma: 52 en la selva, 27 en el cachichinal y 28 en el cafetal. En los huert...
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Lophiaris tapiae Balam & Carnevali (Orchidaceae: Oncidiinae) is described and illustrated. The new species is known only from the Escarcega area, and the Candelaria and Palizada rivers margins in the state of Campeche, Mexico. It is... more
Lophiaris tapiae Balam & Carnevali (Orchidaceae: Oncidiinae) is described and illustrated. The new species is known only from the Escarcega area, and the Candelaria and Palizada rivers margins in the state of Campeche, Mexico. It is compared with species of ...
RESUMEN. Se describen dos especies nuevas del genero Drosera provenientes de la Guayana Vene-zolana: Drosera hirticalyx y D. yutajensis. Las es-peeies D. colombislna A. Fernandez y D. pananzen-sis MD Correa & AS Taylor son... more
RESUMEN. Se describen dos especies nuevas del genero Drosera provenientes de la Guayana Vene-zolana: Drosera hirticalyx y D. yutajensis. Las es-peeies D. colombislna A. Fernandez y D. pananzen-sis MD Correa & AS Taylor son consideradas sinonimos de D. ...
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... E n : S upplement , B iol ogia Centra li Americana, Botany 4: 96-114. P??rez AL, Sousa-SM,Hanan AM, Chiang F. y Te no rio P. 2005. Vegetaci??n Terrestre. En: Bueno J., ?? l va rez F. y Santiago S. (Eds.). Biodiversidad del Estado de... more
... E n : S upplement , B iol ogia Centra li Americana, Botany 4: 96-114. P??rez AL, Sousa-SM,Hanan AM, Chiang F. y Te no rio P. 2005. Vegetaci??n Terrestre. En: Bueno J., ?? l va rez F. y Santiago S. (Eds.). Biodiversidad del Estado de Tabasco, pp. 65-110. ...
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AGRIS record. Record number, VE2009415245. Titles, Libro rojo de la flora Venezolana. Personal Authors, Llamozas, S.,Duno de Stefano, R.,Meier, W.,Riina, R.,Stauffer; F.,Aymard, G.,Huber, O.,Ortìz, R. Corporate Authors, Provita. Fundaciòn... more
AGRIS record. Record number, VE2009415245. Titles, Libro rojo de la flora Venezolana. Personal Authors, Llamozas, S.,Duno de Stefano, R.,Meier, W.,Riina, R.,Stauffer; F.,Aymard, G.,Huber, O.,Ortìz, R. Corporate Authors, Provita. Fundaciòn Polar. ...
Le traitement taxonomique du genre Dendrobangia Rusby est présenté pour les Néotropiques, sa position sytématique n'étant pas encore résolue(Cardiopteridaceae ou Icacinaceae). Dendrobangia comprend deux espèces: Dendrobangia... more
Le traitement taxonomique du genre Dendrobangia Rusby est présenté pour les Néotropiques, sa position sytématique n'étant pas encore résolue(Cardiopteridaceae ou Icacinaceae). Dendrobangia comprend deux espèces: Dendrobangia boliviana Rusby et ...
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Casearia subsessiliflora Lundell (Salicaceae),endemic to Mexican portion of the Yucatan Peninsula Biotic Province, had hitherto been placed in the synonymy of Casearia sylvestris Sw. Herbarium material of Casearia subsessiliflora,however,... more
Casearia subsessiliflora Lundell (Salicaceae),endemic to Mexican portion of the Yucatan Peninsula Biotic Province, had hitherto been placed in the synonymy of Casearia sylvestris Sw. Herbarium material of Casearia subsessiliflora,however, differs morphologically from specimens of Casearia sylvestris collected elsewhere in Mexico, Central America, and the Antilles. We herein provide evidence to treat Casearia subsessiliflora as a distinct taxon different from Casearia sylvestris.
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Se describe la obra botánica del médico venezolano José María Vargas a través del seguimiento de los contactos que mantuvo con botánicos y naturalistas contemporáneos, y el estudio detallado de las muestras que personalmente colectó en el... more
Se describe la obra botánica del médico venezolano José María Vargas a través del seguimiento de los contactos que mantuvo con botánicos y naturalistas contemporáneos, y el estudio detallado de las muestras que personalmente colectó en el Valle de Caracas. Las 200-300 ...
... Versión impresa): 0084-5906. VENEZUELA. 2007. Fred W. Stauffer / Lizbeth Pappaterra de Stauffer / Rodrigo Duno de Stefano / Ricarda. Riina / Giovannina Orsini / Otto Huber. TIPOS DE MONOCOTYLEDONAE DEPOSITADOS ...