Ana Rosa López Ferrari

Metropolitan Autonomous University | UAM · Departamento de Biología

The subtribe Ponerinae (Orchidaceae) includes the genera Helleriella A. D. Hawkes, Isochilus R. Brown, Nemaconia Knowles & Westc., and Ponera Lindl. Most of its species are epiphytes and usually grow on trees of the genus Quercus L. in cloud forests and temperate coniferous and broad-leaved forests; some taxa are rarely lithophytes or less frequent...

The genus Hechtia (sensu lato) is distributed from the southern United States to northern Central America and includes 95 species. Recent botanical explorations, carried out in the Colima and Jalisco states in search of H. reticulata, led to the discovery of two new species. The aims of this work were to complete the morphological description of H....

Corallorhiza is a genus of mycoheterotrophic orchids that includes 12 species, most of them re�stricted to North and Central America. In Mexico, there are seven taxa, distributed throughout the country, except for seven of the 32 Mexican states; in Estado de México all of them are present. The Orchidaceae is known for its diversity of pollination...

Este 2023 el Herbario Metropolitano Ramón Riba y Nava Esparza (UAMIZ), de la División de Ciencias Biológicas y de la Salud, de la Universidad Autónoma Metropolitana unidad Iztapalapa cumple 42 años de existencia durante los cuales ha contribuido y apoyado la investigación botánica en México. Se presentan datos sobre su fundación y sus aportes al co...

Viridantha minuscula from the state of Guanajuato, Mexico, is described and illustrated as new to science. The proposed taxon is compared to V. lepidosepala and V. tortilis, species with the most similarities. Images and a distribution map of the taxa involved are provided.

A new variety of Ainea conzattii is described and illustrated, a key to recognize the two varieties of the species and a distribution map of both taxa are included.

Recent botanical explorations carried out in the Guerrero state for the project Bromeliaceae of Mexico led to the discovery of two new species, both endemic to Guerrero: Hechtia kruseana and H. rosamariae. The new taxa are compared with the morphologically similar: H. anarosae, H. caulescens, H. jaliscana and H. stenopetala. Hechtia kruseana differ...

Antecedentes: Santos Reyes Tepejillo, Oaxaca, carece de un inventario florístico integral. Elaborarlo permitirá contar con información para plantear estrategias de manejo y conservación de sus recursos vegetales. Preguntas: ¿Cuántas y cuáles especies de plantas vasculares hay en el municipio de Santos Reyes Tepejillo y en qué tipo de vegetación se...

two new combinations en Arecaceae and bromeliaceae are proposed

Background: Bromeliaceae are widespread in Mexico and present in all types of vegetation. A high number of species are restricted to the country. Jalisco is the fifth Mexican state regarding Bromeliaceae richness and 18 % of its species are state endemics. Questions and / or Hypotheses: How bromeliads are distributed in Western Sierra-Coast region...

Tillandsia bernalensis, a new species from the state of Querétaro, Mexico, is described and illustrated. The proposed species is compared to T. parryi, T. suesilliae and T. tonalaensis, taxa with some similarities. Images and a distribution map of the four species are included.

Se publica la flora de la familia Iridaceae presente en el Valle de Tehuacán-Cuicatlán

Tradescantia mixtecana, a novelty from the state of Oaxaca, Mexico, is here described and illustrated. The proposed taxon is compared with T. exaltata and T. tepoxtlana, species with which it has some similarities. A morphological description and images of the new taxon are presented, along with a distribution map including all the Oaxacan species...

Oaxaca is one of the five Mexican states with the highest biological richness and one of the most diverse in ethnic composition. Knowledge and use of plant resources have been part of their culture and maintenance in territories with different ecological, geological, and climatic conditions. Oaxaca contains 43.9% of the Mexican flora, with about 10...

El género Greigia Regel se distribuye desde México hasta Chile e incluye 37 especies terrestres y/o rupícolas, la mayoría de ellas sudamericanas. En México habitan tres, todas endémicas, principalmente en bosques mesófilos de montaña y de pino-encino de los estados de Chiapas, Oaxaca y Veracruz. La representación de estas especies en colecciones in...

Background and Aims Epiphytes are an important component of tropical forests, also they are sensitive to disturbance and deforestation caused by humans, since they depend on their host trees and the micro environmental conditions that these provide. The aim of this study was to analyze the differences in species richness, composition, and vertical...

The genus Hechtia includes 91 species (with those described herein), 88 of them present in Mexico, and the entire genus is endemic to the region termed “Megaméxico 3” by Rzedowski. With 21 species, the Mexican state of Puebla is the second most species rich. As a result of botanical exploration for the project Bromeliaceae of Mexico, we describe he...

Pitcairnia abscondita sp. nov., known until now only from the Municipalities of Cabo Corrientes, Mas-cota, Puerto Vallarta, San Sebastián del Oeste and Talpa de Allende in the State of Jalisco, Mexico, is here described and illustrated. The new taxon was confused with P. imbricata for long time, but differs from this species by its green floral bra...

Se presenta la descripción taxonómica de la familia Araliaceae, con los géneros Aralia, Dendropanax y Oreopanax y 9 especies presentes en Guerrero. El género con mayor número de especies en Guerrero es Oreopanax. Se incluyen claves para identificar géneros y especies, mapas de distribución geográfica de los taxones presentes en el estado, una ilust...

Viridantha pachycaulis and V. zamudioi, from the states of Jalisco and Querétaro, Mexico, respectively, are described and illustrated as new to science. The proposed taxa are compared to V. mauryana and V. yagulensis, species with which they have some similarities. Morphological descriptions, images and a distribution map of the described taxa are...

Gonolobus espejoi, a new species from Veracruz, Mexico, is described and illustrated. The new taxon shares characteristics with G. albiflorus and G. spiranthus such as the presence of a stipitate gynostegium, but differs from these species by having campanulate corolla, corolla lobes with two lateral purple calluses with the right margin ciliate, o...

Se presenta una análisis sobre la diversidad de Bromeliaceae en e estado de Nayarit

En este año 2021 el Herbario Metropolitano Ramón Riba y Nava Esparza (UAMIZ), de la Universidad Autónoma Metropolitana Iztapalapa cumple 40 años de arduo trabajo, contribuyendo y apoyando la investigación botánica en México. Con más de 86,000 ejemplares botánicos en su acervo, éstos están disponibles para la consulta, constituye uno de los herbario...

The first complete checklist of the Mexican vascular epiphytes is presented, accompanied by data relating to its geographical distribution by state, elevational range, endemism, life form and type of vegetation in which each species can be found. Based on the review of herbarium specimens and specialized literature, as well as in the collection o...

A new combination in Rutaceae is published: Megastigma conzattii, which was erroneously described as an Amyris, A. conzattii. The species is described, illustrated, and compared with M. skinnerii and M. chiangii, both species with similar morphological characteristics. A comparative table and an identification key of these species are included.

The aim of this work was to compile and synthesize information about the diversity and distribution of epiphytic angiosperms in Veracruz State to obtain updated data of this important plant group. Based on the revision of herbarium material and specialized literature, as well as the collection of botanical specimens, we recorded a total of 21 famil...

Aechmea novoae Flores-Arg., López-Ferr.& Espejo, an epiphytic species distributed in the municipalities of Cabo Corrientes, La Huerta, and Puerto Vallarta in the state of Jalisco, Mexico, is described and illustrated. Morphologically, the new taxon resembles A. mexicana Baker and A.lueddemanniana (K. Koch) Brongn. ex Mez. A comparative table, figur...

The genus Hechtia includes 84 species, 79 of them present in Mexico. With 12 species (including those described herein), the Mexican state of Guerrero is the third most diverse in species. As a result of botanical explorations for the project Bromeliaceae of Mexico, we describe here five new species for science, all endemic to Guerrero: Hechtia ele...

Tillandsia dichromantha, a new species from the state of Oaxaca, Mexico, is described and illustrated. The proposed taxon is compared with T. achyrostachys and T. ilseana, species with which it has some similarities. Images and a distribution map are included.

Werauhia maculata a new species from Tabasco, Mexico is described and illustrated. The new taxon possesses a large tank-rosette, with conspicuous and irregularly disposed dark purple marks on the basal portion of the leaves abaxial surface, a simple inflorescence, with secund and numerous whitish-flowers densely arranged on the rachis. The new taxo...

Antecedentes y Objetivos: La familia Bromeliaceae en México está integrada por 422 especies, de las cuales en Veracruz se encuentran 96(22.7%); diez de ellas son endémicas al estado. El objetivo de este estudio fue identificar y reportar las especies de bromeliáceas que no se habían registrado previamente para la entidad. Métodos: Se realizaron ex...

Based on morphological evidence, we propose to raise Tillandsia mauryana forma secundifolia to species level with the name Viridantha secundifolia (Ehlers) Hern.-Cárdenas, Espejo & López-Ferr. Viridantha secundifolia can be readily distinguished by the falciform rosettes, the broadly oblong to square, 1-1.2 × 0.8-1.1 cm leaf sheaths and by the 1.8-...

Hechtia ibugana a new species from the municipality of Puerto Vallarta, Jalisco, is described and illustrated. The new taxon is compared with H. pretiosa and H. rosea, species that also present sepals and petals rose to reddish, as well as with H. iltisii and H. santanae, endemic species of the state of Jalisco, Mexico.

Geographical distribution of epiphytic angiosperms of the priority terrestrial region of Cerros Negro-Yucaño, Oaxaca, Mexico. The knowledge on richness and distribution of epiphytic vascular plants is still incomplete in many areas of Mexico. An example is the terrestrial priority region (RTP) Cerros Negro-Yucaño, which is located in the Northwest...

Hechtia gypsophila and H. minuta, two new species from Oaxaca, Mexico are described and illustrated. The proposed species are compared with H. pumila, taxon that present some similarities and also with other species that grow near the type localities of the two new taxa proposed. Images and a distribution map of all taxa are included.

El conocimiento sobre la riqueza y la distribución de las plantas epifítas vasculares es aún incompleto en muchas áreas de México. Un ejemplo es la región terrestre prioritaria (RTP) Cerros Negro-Yucaño, que se ubica en el noroeste del estado de Oaxaca y pertenece a la región mixteca alta (Ñuu Savi Sukun, Ñuu vixi). Con base en la revisión de mater...

Oaxaca is one of the Mexican states with highest plant species richness, hosting about 10,000 taxa of vascular plants. The Bromeliaceae family is represented in Oaxaca by 184 species, which corresponds to 44% of the Mexican bromeliad flora. About 29% (53 spp.) and 67% (124 spp.) of these species are endemic to the state and to the country, respecti...

A taxonomic revision of the genus Viridantha Espejo is provided, Viridantha is also considered by some authors as Tillandsia subgenus Viridantha s. str. Fourteen species are recorded for the genus. The new combinations Viridantha boqueronensis (Ehlers) Hern.-Cárdenas, Espejo y López-Ferr., V. grandispica (Ehlers) Hern.-Cárdenas, Espejo y López-Ferr...

A taxonomic revision of the genus Viridantha Espejo is provided, Viridantha is also considered by some authors as Tillandsia subgenus Viridantha s. str. Fourteen species are recorded for the genus. The new combinations Viridantha boqueronensis (Ehlers) Hern.-Cárdenas, Espejo & López-Ferr., V. grandispica (Ehlers) Hern.-Cárdenas, Espejo & López-Ferr...

p> Background : Bromeliaceae family in Mexico has been the object of interest by botanists since 1789; their systematic study was approached from the 1970s onwards, and now there are significant advances in its taxonomic-floristic knowledge. Question: How many and which species of Bromeliaceae occur in Mexico? How they are distributed, and how ma...

This is an open access article distributed under the terms of the Creative Commons Attribution License CC BY-NC (4.0) international. Resumen Antecedentes: Las Bromeliaceae mexicanas han despertado el interés de los botánicos desde 1789; su estudio sistemático inició a partir de la década de los setenta del siglo pasado, contando actualmente con ava...

Amyris roseomaculata, a new species from the state of Durango, Mexico, is described and illustrated. The new species is morphologically similar to A. rekoi Blake because both have 5-merous flowers, unifoliolate leaves, and leaflets and petioles are similar in length. However, A. roseomaculata is differentiated from that species due to the shape of...

Nuestros datos preliminares indican la presencia en el estado de alrededor de 725 especies de epífitas vasculares. En el caso de los cinco grupos principales con representantes epífitos los datos son los siguientes:, de las 55 especies de Araceae registradas para Veracruz, 40 son (hemi)epífitas, de 91 de las Bromeliaceae 72 son epífitas, de las apr...

A multivariate analysis of the Pitcairnia palmeri group are presented. Principal Components and Cluster analyses were performed in order to have more accurate information to delimit the species. The analyses showed that the specimens referred to Pitcairnia palmeri var. longebracteata are clearly delimited, while those identified as P. palmeri var....

Diversidad y conservación de plantas epífitas en Veracruz

Se presenta la relación de las especies de Apiáceas acuáticas de México

De la clase Liliopsida, Orchidaceae es la familia con mayor número de especies en México (ca. 1 263), de las cuales 66.5 % son epífitas y 46.3 % son endémicas del país. Sin embargo, aún existen áreas poco exploradas desde el punto de vista botánico y el estado de Oaxaca tiene menos de la quinta parte de su territorio inventariada con fines florísti...

Con 184 especies registradas, Oaxaca ocupa el primer lugar en riqueza de Bromeliaceae, albergando 43 % de la flora bromeliológica de México (420), así como 40 % de las bromelias endémicas del país (117). Sin embargo, menos de la quinta parte del estado ha sido inventariada con fines florísticos. Con el propósito de tener un panorama completo sobre...

The current knowledge of the Bromeliad Flora of the state of Chiapas, Mexico, is presented. Based on the study of 5,495 herbarium specimens corresponding to 3,233 collections, and in a detailed bibliographic revision, we conclude that the currently known Bromeliad Flora of Chiapas comprises 133 species and 14 genera. With 21 endemic taxa, correspon...

Cladocolea spathiflora, a new species from Guerrero, Mexico, is described and illustrated. The new taxon is compared with C. pringlei and C. grahamii, species with similar characteristics; however, the flowers of C. spathiflora are associated to a spathaceous receptacle, while in the other two species the flowers are sessile on the axis of the infl...

Habenaria yookuaaensis, a new species from the state of Oaxaca, is described and illustrated. The new taxon is part of the H. brevilabiata, H. virens, H. odontopetala, H. strictissima, and H. acalcarata complex, species with which the new entity is compared.

Pitcairnia singularis, known only from the municipality of Puerto Vallarta in the state of Jalisco, Mexico, is here described and illustrated. The new species is characterized by very narrow, epetiolate, deciduous normal leaves, a simple inflorescence with 14–20 pedicellate, secund, white flowers, and petals 1.5–1.7 cm long, without appendages. An...

Fauna associated with epiphytic plants comprises a great variety of animals. Some studies (Dejean et al., 1995; Herrera-Fuentes et al., 2007, 2008; Campos-Serrano et al., 2009; Cruz-Ruiz et al., 2012.; Guzmán-Jacob, 2013) document the presence of several groups of insects and amphibians associated with bromeliads, particularly those species with ta...

Amyris jorgemeavei from the state of Oaxaca, Mexico, is described and illustrated. The new taxon is compared with A. carterae and A. madrensis, species with similar morphological characteristics. It is however easily differentiated from these two by having glabrous leaves and floral parts, a lobed nectar disc, and it is known only from southwestern...

A nivel mundial se tienen registradas cerca de 27600 especies de epífitas vasculares comprendidas en 913 géneros y 73 familias. México tiene cerca de 1650 especies, 273 géneros y 43 familias, lo que en conjunto representaría 7% de su flora. Las angiospermas concentran cerca de 1360 especies y 190 géneros y algunas de las familias que sobresalen por...

Bromeliads from the state of Morelos, Mexico are described and profusely illustrated. Also data of distribution, ecology and phenology are presented.

El municipio de San Juan Colorado se encuentra en la parte sudoccidental del estado de Oaxaca y cuenta con una superficie aproximada de 86km2. El objetivo de este estudio fue elaborar un listado florístico de las monocotiledóneas presentes en el municipio, lugar que nunca antes había sido explorado botánicamente. Se utilizaron los métodos convencio...

Las epífitas son plantas que viven sobre otras plantas, utilizan como medio de soporte principalmente a los árboles. Para poder obtener los recursos (minerales del aire, niebla, lluvia) y la luz que necesitan para desarrollarse han adquirido diversas adaptaciones. Las siguientes imágenes forman parte de los resultados de la tesis de maestría “Angi...

Pitcairnia queroana, known only from the state of Chiapas, Mexico, is here described and illustrated. The new taxon superficially resembles P. sulphurea but differs from it by the presence of long petioles, longer nflorescence with more than 60 flowers, purple calyx, and the conspicuous and dense white-lanate-tomentose indument that covers all the...

Tillandsia chalcatzingensis from Morelos, Mexico is described and illustrated. The new species is compared with T. superinsignis, T. thyrsigera and T. tonalaensis, taxa with similar morphological features. A comparative table and a distribution map of these taxa are included.

Se describe e ilustra Hechtia mapimiana una nueva especie endémica del Cañón de Fernández, sierra de Mapimí, en el estado de Durango, México. El nuevo taxon se compara con H. zamudioi, con la cual presenta similitudes a nivel vegetativo y floral.

51 new species, located in 9 families and 19 genera, as well as a new genus, which have been described over the 30 year history of the Herbarium Metropolitano, are presented and illustrated 51 especies nuevas, ubicadas en 9 families y 19 géneros, así como un género nuevo, que han sido descritos a lo largo de los 30 años de historia del Herbario Me...

Tillandsia religiosa Hern.-Cárdenas, González-Rocha, Espejo, López-Ferr., Cerros & Ehlers, a new species from Morelos, Mexico is described and illustrated. The new species is compared to taxa with similar characteristics, T. taxcoensis Ehlers, T. thyrsigera E. Morren ex Baker and T. superinsignis Matuda. Images and a distribution map of the new tax...

Se describe e ilustra Hechtia purhepecha del estado de Michoacán, México. El nuevo taxon se compara con H. laxissima, especie con características similares. Se registra por primera vez para el estado de Michoacán a Tillandsia guenther-nolleri Ehlers, hasta ahora solo conocida de Colima y Jalisco. Hechtia purhepecha, a new species from Michoacán, Me...

RESUMEN Se describe e ilustra Catopsis occulta Mart.-Correa, Espejo & López-Ferr., especie nueva endémica de los estados de Chiapas, Oaxaca y Veracruz en México. El nuevo taxon se caracteriza por sus plantas dioicas de gran tamaño con las inflorescencias generalmente tres veces ramificadas y las brácteas florales y los sépalos amarillo-anaranjados....

Catopsis occulta Mart.-Correa, Espejo & Lopez-Ferr., a new endemic species from the states of Chiapas, Oaxaca and Veracruz in Mexico, is described and illustrated. The new taxon is characterized by dioecious, large plants with usually three times branched inflorescences and yellow-orange floral bracts and sepals. The new species is compared with C....

Hechtia rubicunda, a new species from southeastern Oaxaca, Mexico is described and illustrated. The new taxon is compared with H. caudata L. B. Sm., H. fosteriana L. B. Sm., H. isthmusiana Burt Utley, and H. lanata L. B. Sm., species all described on the basis of material collected in this region.

Hechtia purhepecha, a new species from Michoacan, Mexico is described and illustrated. The new taxon is compared with H. laxissima, a species with similar characteristics. Tillandsia guenther-nolleri Ehlers, a taxon known until now only from Colima and Jalisco, is recorded for the first time for the state of Michoacan.

Se describe e ilustra Hechtia rubicunda, nueva especie de la región sureste de Oaxaca, México. El nuevo taxon se compara con H. caudata L. B. Sm., H. fosteriana L. B. Sm., H. isthmusiana Burt-Utley y H. lanata L. B. Sm., especies todas descritas con base en material procedente de dicha comarca.

Se describe e ilustra Hechtia montis-frigidi, nueva especie de Morelos, México. El nuevo taxon se compara con H. chichinautzensis y H. podantha, especies con características similares.

We explain why the lectotypification of Hechtia galeottii proposed by Smith & Downs is inaccurate and in serious conflict with the protologue and should be discarded. Accordingly, we propose a new lectotype and include a more detailed description of the species.

Se describe e ilustra Tradescantia murilloae Zamudio, Espejo, López-Ferrari et Ceja, una nueva especie del estado de Querétaro. El taxon aquí descrito se compara con T. crassifolia Cav., especie con características similares, de la cual difiere por la presencia de un rizoma conspicuo y por las hojas y flores más pequeñas, así como por las caracterí...

Hechtia mapimiana a new endemic species from Cañón de Fernández, sierra de Mapimí, in the state of Durango, Mexico, is described and illustrated. The new taxon is compared with H. zamudioi, species with similar vegetative and floral characteristics. Como parte del proyecto Flora Bromeliológica Mexicana, nos hemos dado a la tarea de recolectar mater...

Tradescantia murilloae Zamudio, Espejo, Lopez-Ferrari et Ceja, a new species from Queretaro, Mexico is described and illustrated. The new taxon is compared with T. crassifolia Cav., a species with similar characteristics from which differs by the presence of a conspicuous rhizome, smaller leaves and flowers and different substrate and vegetation ty...

Hechtia mapimiana a new endemic species from Canon de Fernandez, sierra de Mapimi, in the state of Durango, Mexico, is described and illustrated. The new taxon is compared with H. zamudioi, species with similar vegetative and floral characteristics.

Hechtia lanata L.B.Sm., a species known only from the southeastern region of Oaxaca, Mexico is neotypifi ed and a complete and updated description is presented. Photographs of the species characteristics and habitat are also included.