Aaron Rodriguez- University of Guadalajara
Aaron Rodriguez
- University of Guadalajara
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60
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Introduction
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Publications
Publications (60)
The Sierra Madre del Sur (SMS) concentrates the greatest plant diversity in Mexico (9,524 species) and 10% of the endemism. And 8.3% of its surface is covered by Natural Protected Areas (NPAs). Strategies to create NPAs are based on identifying biodiversity hotspots to preserve the maximum number of species with the least resources. Areas with high...
The Sierra Madre del Sur (SMS) biogeographic province parallels the Pacific Ocean from the state of Jalisco to Oaxaca and Puebla. The area is very complex tectonically and geologically and harbors the highest number of vascular and endemic plant species in Mexico. Here, we describe Tigridia nana as a new species in this province. Furthermore, durin...
Background:
The genus Pinguicula harbors 110 species, of which 53 are distributed in Mexico. The formation of the Mexican mountains has favored the Pinguicula diversification. Pinguicula specimens collected in the State of México, along the Trans-Mexican Volcanic Belt (TMVB) do not correspond with any known species.
Questions:
Do the collected spe...
Background:
The chloroplast genomes of Cactaceae exhibit boundary modifications in the inverted repeat regions (IRs), gene inversions, and deletions. Among nine Mammillaria species, three distinct chloroplast structures have been identified, although not all of these correspond to the morphology-based classification of the genus.
Question:
Is ther...
The genus Pinguicula (Lentibulariaceae) is composed of 115 species of carnivorous plants and Mexico is a center of diversification. The Mexican Transition Zone (MTZ) is the boundary between the Nearctic and Neotropical regions. It includes the main mountain ranges of Mexico, which extend south to northeastern Nicaragua. Its geological history, phys...
Background: Lycianthes moziniana (Capsiceae, Solanaceae) is an endemic and widespread species in Mexico. Morphological and molecular evidence suggested three varieties (L. moziniana var. margaretiana, L. moziniana var. moziniana and L. moziniana var. oaxacana).
Hypotheses: Lycianthes moziniana is integrated by differentiated lineages corresponding...
The Transmexican Volcanic Belt (TVB) extends across Mexico from east to west between 18°30' and 21°30' latitudes. It is part of the Mexican Transition Zone consisting of several plateaus at different elevations and hundreds of volcanic structures. These have promoted diversification and endemism in several plant lineages. Here, Tigridia azufresensi...
Hunzikeria is a petunioid genus of Solanaceae that includes three species. The genus presents a disjunct distribution between South and North America. Hunzikeria coulteri and H. texana occur in North America, while H. steyermarkiana is reported from Venezuela. During botanical explorations in western Mexico, we found a population of Hunzikeria that...
Aim: To test explicitly whether the Sierra Madre del Sur includes areas with significant neo-, paleo- and mixed endemism and to explore possible environmental drivers implied in their high species richness and spatial phylogenetic patterns.
Location: Sierra Madre del Sur, Mexico.
Taxon: Vascular plants.
Methods: Species richness, species endemism,...
Gypsum soils occur around the world, mainly in arid regions. These harsh environments promote unusual flora with high degrees of endemism. Mexico has extensive gypsum outcrops, but their flora has been poorly studied. However, the highest species richness and endemism are expected to be concentrated in Mexico’s northern dry regions. To promote the...
Background: The Mammillaria series Stylothelae (Cactaceae) includes 16 taxa distributed mostly among the limits of the Chihuahuan Desert (CD) with the Sierra Madre Oriental and the Transmexican Volcanic Belt (TVB). In Jalisco, four pink flowered species occur at the southwestern end of the CD where it meets the TVB. The boundaries and recognition o...
The spatial distribution of the species richness is not aleatory. It responds to evolutionary, geographical, and climatic events, and it is important to establish biodiversity management and conservation priorities. The mountainous zones around the globe have been identified as centers of plant diversification. In Mexico, the Mexican Transition Zon...
Antecedentes: La diversidad topográfica y climática de la Zona de Transición Mexicana (ZTM) favorecieron la riqueza de especies, la disyunción y el endemismo. Tigridia durangensis es una geófita endémica con distribución disyunta en la ZTM.
Preguntas y / o Hipótesis: ¿Cuál es la diversidad genética de Tigridia durangensis? ¿Tiene estructura genéti...
Echeandia (Asparagaceae) is an American genus of herbaceous geophytes. Its distribution is heterogeneous but concentrates along the Mexican Transition Zone (MTZ). We analyzed the species richness distribution and endemism of the group. We compiled a data base of 2,078 records obtained by revision of herbarium specimens, scientific publications, and...
Spatial patterns of plant diversity matter. Identifying areas of high species richness and endemism are crucial for understanding the evolution of plant diversity and community assemblages as well establishing sustainablility and conservation priorities. Lycianthes is the third most species-rich genus in the Solanaceae with 187 taxa (152 species, 1...
Antecedentes:
La Sierra Madre del Sur (SMS) se ubica paralela al Océano Pacífico, desde Jalisco a Oaxaca. Es la provincia más biodiversa de México, con 7,016 especies de plantas vasculares.
Preguntas:
¿Cuántas y cuáles son las plantas vasculares endémicas de la SMS y en qué tipos de vegetación habitan? ¿Cuántas se encuentran en alguna categoría de...
Lycianthes moziniana (Solanaceae: Capsiceae) is a perennial herb with edible fruits that is endemic to Mexico. Three varieties are recognized, all known in the Mexican Transition Zone. Lycianthes moziniana var. margaretiana grows in the Sierra Madre Oriental, whereas L. moziniana var. moziniana is common along the Trans-Mexican Volcanic Belt and in...
Lycianthes moziniana (Solanaceae: Capsiceae) is a perennial herb with edible fruits that is endemic to Mexico. Three
varieties are recognized, all known in the Mexican Transition Zone. Lycianthes moziniana var. margaretiana grows in
the Sierra Madre Oriental, whereas L. moziniana var. moziniana is common along the Trans-Mexican Volcanic Belt and
in...
Mexico ranks fourth worldwide for its number of species of vascular plants; however, insufficient area has been marked for conservation as Protected Natural Areas (PNAs); 176 PNAs represent 12% of the total surface and encompass only a small portion of the Mexican endemic species. Strategies for setting up conservation zones are often based on iden...
El género Sedum agrupa a 428 especies y 133 habitan en México. Éstas se distribuyen principalmente en la Zona de Transición Mexicana donde convergen las regiones biogeográficas Neártica y Neotropical. La Sierra Madre del Sur (SMS) es una de las provincias biogeográficas con mayor diversidad vegetal del país. Los objetivos del trabajo fueron: 1) det...
Native Mexican woody bamboos (Poaceae: Bambusoideae: Bambuseae) are classified in subtribes Arthrostylidiinae, Chusqueinae and Guaduinae. They grow from sea level up to 3200 m along the main mountain ranges and occupy different vegetation types. The aims of this study were to: identify the areas with the most species diversity; detect areas of ende...
Resumen:
Antecedentes y Objetivos: El género Dahlia (Asteraceae) es nativo de América y México es su centro de diversificación. Dahlia es importante en la horticultura ornamental, su mejoramiento genético ha generado más de 15,000 variedades. México representa la principal fuente de germoplasma, por lo que un estudio sobre su riqueza y distribución...
Calochortus fuscus Schultes (1829: 131) was described based on material collected by Wilhelm Friedrich von Karwinski in Mexico, who participated in two excursions in Mexico (1827–1832, 1841–1843). His collections were purchased by European institutions, especially by Botanische Staatssamlung München (M) in Munich, Germany. Calochortus fuscus is the...
Manfreda santana-michelii es una especie presente en la ecotoníaa entre el bosque de pino-encino y la vegetación sabanoide en el extremo norte de la Sierra Madre del Sur, al oeste de México. Por su morfología se relaciona a M. involuta y M. singuliflora pero
difiere de ellas en el desarrollo de hojas con márgenes denticulados, inflorescencias racem...
The genus Manfreda (Asparagaceae) contains 35 species. A species complex includes plants similar to M. gutttata, which are characterized by the protrusion of the ovary into the perigone tube. This feature was found in specimens recently collected in western Mexico. After a morphological analysis, we found that some of the plants differ from the oth...
The name Calochortus ownbeyi has been extensively used even though it was not validly published. Accordingly, we are here validating and illustrating this species. Calochortus ownbeyi can be confused with C. venustulus, but there is morphological and molecular evidence that they are distinct species. A comparison between these two taxa and a distri...
The morphological limits among some Coreopsideae genera in the Asteraceae family are complex. An example is Bidens herzogii, a taxon first described as a member of the genus Cosmos, but recently transferred to Bidens. The species is endemic to Eastern Bolivia and it grows on the Cerrado biogeographic province. Recently collected specimens, analysis...
Antecedentes y Objetivos:
Cosmos secc. Discopoda (Asteraceae, Coreopsideae) es un modelo de estudio sobre poliploidía y aneuploidía. La sección es monofilética, agrupa 24 especies herbáceas perennes y existen especies poliploides y aneuploides. Sin embargo, no se conocen los números cromosómicos para todas las especies y su citogeografía no ha sido...
The floristic inventory of the Sierra de Quila Natural Reserve, in western Mexico, resulted in the discovery of Polianthes quilae (Polianthes subgen. Bravoa). The novelty is related to P. cernua and P. geminiflora var. clivicola but is distinguished by the erect lanceolate leaves, glauous inflorescence with 4-21 floral nodes, 0.9-2.1 cm long pedice...
Se documenta un registro nuevo de Tigridia hintonii (Iridaceae) en el estado de Guerrero, México. George B. Hinton la recolectó por primera y única vez en octubre de 1936 en Fresnos, Distrito de Mina, Zirándaro, Guerrero. Desde entonces no se habían encontrado otros ejemplares del taxon hasta el año 2012. Se incluye una descripción morfológica comp...
A considerable diversity and endemism of the tribe Coreopsideae (Asteraceae) is concentrated in western Mexico, a territory known as Nueva Galicia. Dahlia is a notable genus of Coreopsideae, and so far D. barkerae, D. coccinea, D. pugana, D. scapigera, D. sherffii, and D. tenuicattlis were registered for Nueva Galicia. In the present work, we repor...
A considerable diversity and endemism of the tribe Coreopsideae (Asteraceae) is concentrated in western Mexico, a territory known as Nueva Galicia. Dahlia is a notable genus of Coreopsideae, and so far D. barkerae, D. coccinea, D. pugana, D. scapigera, D. sherffii, and D. tenuicaulis were registered for Nueva Galicia. In the present work, we report...
The genus Cosmos is restricted to the Americas, and Mexico represents its center of diversification. Some species have a wide distribution and have been intensively collected, whereas others, due to their narrow distribution, are poorly known. This has generated a poor understanding of its morphological variability and infrageneric and interspecifi...
Cosmos es un género que tiene sus límites de distribución natural en América, y México representa su centro de diversificación. Su repartición geográfica es interesante, pues algunas especies tienen una amplia distribución y han sido intensamente recolectadas, mientras que otras, debido a su distribución restringuida, son poco conocidas. Este hecho h...
Echeandia novogaliciana and E. crudeniana are described from western Mexico. Echeandia novogaliciana is known from three populations, one in the state of Nayarit and two in Zacatecas. Likewise, E. crudeniana is known from two populations in the municipality of Bahía de Banderas, Nayarit. For both species, illustrations are provided and morphologica...
The genus Psilocybe contains iconic species of fungi renowned for their hallucinogenic properties. Recently, Psilocybe also included non-hallucinogenic species that have since been shifted to the genus Deconica. Here, we reconstruct a multigene phylogeny for Psilocybe, Deconica, and other exemplars of the families Hymenogastraceae and Strophariacea...
The greatest diversity and endemism of Coreopsideae Turner et Powell (Asteraceae) is concentrated in Mexico. Dahlia Cav. is a characteristic genus of Coreopsideae and represented in Jalisco by D. barkerae Knowles et Westc., D. coccinea Cav., D. pugana Aaron Rodr. et A. Castro, D. sherffii P. D. Sorensen and D. tenuicaulis P. D. Sorensen. We describ...
Mexico is the center of diversity of the husk tomato (Physalis L., Solanaceae), which includes a number of commercially important edible and ornamental species. Taxonomic identification
is presently based on morphological characteristics, but the presence of high inter- and intraspecific morphological variation
makes this task difficult. Six ISSR p...
The morphologic variation of the genus Prochnyanthes was analyzed by means of the examination of 29 characters, in a sample of 544 individuals from 19 localities. The Principal Components Analysis was used, which shows the variation trends, analyses the similarities among the classification units and identifies groups. Based on the morphological ev...
Se analizó la variación morfológica del género Prochnyanthes, mediante el examende 29 caracteres, en una muestra de 544 individuos de 19 localidades. Se aplicó el Análisis de Componentes Principales, el cual muestra los patrones de variación, analiza las similitudede las unidades de clasificación e identifica grupos. Con base en la evidencia morfol...
A new species, Pluteus nevadensis from subtropical and pine forests in Mexico, is described and compared with similar taxa. Phylogenetic analyses of the ITS rDNA sequence data support the classification of this new taxon in Pluteus section Celluloderma.
As a result of recent botanical collections in western Mexico, the known geographical distribution of Manfreda involuta is extended and its morphological description completed. The species is endemic to western Mexico.
Rhabdias manantlanensis n. sp., parasite of the lungs of Craugastor occidentalis is illustrated and described. Rhabdias manantlanensis differs from related species in the genus by the combination of the following characters: elongated body, cuticle slightly swollen (thin and smooth), 6 weakly developed lips (4 submedian + 2 lateral), localization o...
Mexico is a center of diversity for Solanaceae. Our objective is to analyze the species diversity and geographical distribution of the Solanaceae in Jalisco. The data come from 3 405 herbarium specimens. An analysis of these specimens indicates that the Solanaceae in Jalisco are represented by 20 genera, 138 species and 140 taxa. Four genera, Solan...
Tigridia pugana (Iridaceae: Tigridieae) is described as a new species. It is characterized by producing bulbils in the axils of the cauline leaves. The flower of Tigridia pugana resembles that of T. pulchella B.l. rob. but differs by having longer style branches that are bifid their full length, longer inner tepals and shorter ovary and fruit. So f...
Tigridia rzedowskiana (Tigridieae: Iridaceae) is a new species found in the state of Querétaro, Mexico. It is unique by its yellowish flowers with maroon spots, outer tepals obovate, obtuse to apiculate and inner tepals deltate-hastate and apiculate. The flowers open early in the morning. Tigridia rzedowskiana is morphologically similar to T. catar...
Tigridia amatlanensis is described and illustrated as a new species from Mexico. It is recognized by its nodding flowers and its inner and outer
tepals cirrhous and markedly dimorphic in length. It is most closely related toT. hallbergii subsp.hallbergii andT. meleagris. Other morphologically similar species areT. catarinensis andT. molseediana.
Se...
Onagraceae are a family of 17 genera in seven tribes, with the majority of species in tribes Onagreae and Epilobieae. Despite the species-richness of these two tribes, to date no phylogenetic study has been done with sufé cient taxon sampling to examine relationships between and within these tribes. In this study, we used DNA sequence data from one...
Solanum section Petota (Solanaceae), which includes the cultivated potato (Solanum tuberosum) and its wild relatives, contains about 200 wild species distributed from the southwestern U.S.A. (38°N) to central Argentina and adjacent Chile (41°S). Although most species occur in the Andes of South America, a secondary center of diversity exists betwee...
Con base en información citológica, palinológica y secuencias de ADN se propone la elevación de Nemastylis subgénero Colima al nivel de género para incluir en éste a Nemastylis convoluta. Este nuevo género se caracteriza por presentar filamentos unidos, anteras libres con dehiscencia longitudinal, estilo dividido en tres brazos con seis ramas dispu...
Tigridia gracielae (Tigridieae: Iridaceae), from the state of México, is a new species morphologically similar to T. venusta, from the state of Michoacán. Tigridia gracielae differs from T. venusta in having shorter and narrower tepals, a longer staminal column, anthers fertile along their full length and shorter style branches. Both species share...
México es el centro de diversificación del género Tigridia (Tigridieae: Iridaceae). El accidentado relieve y la diversidad climática presentes en el país han favorecido el desarrollo de endemismos en este grupo. En los veranos de 1996 y 2000 se llevaron a cabo colectas botánicas a fin de ampliar el conocimiento de la distribución geográfica de la t...
Morphological data and single- to low-copy nuclear DNA restriction enzyme site data were used to test subspecies circumscriptions of Solanum bulbocastanum and S. cardiophyllum. A prior chloroplast DNA analysis showed these species to be part of two main clades: 1. S. bulbocastanum subsp. bulbocastanum, S. bulbocastanum subsp. dolichophyllum, S. bul...
Lycianthes manantlanensis is described as a new species from Mexico. Lycianthes manantlanensis is recognized by its glabrous, coriaceous, and shiny leaves, long slender pedicels at anthesis and in fruit, and minute calyx appendages. It is morphologically similar to L. barbatula, L. geminiflora, and L. orogenes and is here compared with them. /// Se...
Se presentan cinco especies de Solanum (Solanaceae) como nuevos registros para la flora del Bajío y regiones adyacentes. Solanum brachistotrichum, S. hintonii, S. jamesii y S. morelliforme son papas silvestres y se agrupan en la sección Petota. Por su parte, S. triquetrum pertenece a la
sección Dulcamara. Se comentan los rasgos distintivos de estos...
A joint Mexico/United States expedition collected wild potato (Solanum sect.Petota) germplasm in Mexico between August 1–31, 1993. The purpose of the expedition was to expand germplasm and herbarium collections
ofS. bulbocastanum andS. cardiophyllum. Collections were made from west-central to southern Mexico, and comprised 19 true seed and 37 tuber...
Como resultado de recientes colectas botánicas en el occidente de México, se amplía la distribución geográfica conocida y se complementa la descripción morfológica de Manfreda involuta, una especie endémica del occidente de México As a result of recent botanical collections in western Mexico, the known geographical distribution of Manfreda involuta...
