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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...
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Citations
... Over the past decade there have been few investigations about the diversity of Pitcairnia L'Héritier (1789: 5; 1790: t. 11) species in Mexico (Espejo-Serna & López-Ferrari 2010, 2015Flores-Argüelles et al. 2017;González-Rocha et al. 2018). These studies have revealed several new species as well as new distributional records for known species, and clearly indicate that there could be more undescribed species in some unexplored regions of the country. ...
... By its vegetative characteristics, these plants were identified in the first instance, as Pitcairnia singularis Flores-Argüelles et al. (2017: 275), and some plants were kept in cultivation to obtain flowers. In July 2019, these plants bloomed, and a detailed examination of the specimens and its comparison with similar previously recorded species from the Mexican Pacific Coast (McVaugh 1989;Salas-Morales et al. 2003;Pulido-Esparza et al. 2004;Espejo-Serna et al. 2007;Flores-Cruz & Granados Mendoza 2011;Mejía-Marín et al. 2016;Flores-Argüelles et al. 2017); provided the convincing evidence that it is indeed a new species that we propose here. For descriptive terminology of the new species, Scharf & Gouda (2008) has been used. ...
Pitcairnia anarosae, known until now from the municipality of San Juan Colorado, Oaxaca, Mexico, is described and illustrated. The new species is compared with P. singularis, from which differs by the plant height (19-40 vs 15-25 cm) the number of leaves (5-8 vs 3-4), and the morphology, color (red vs white) and length of flowers.
La bióloga Ana Rosa López Ferrari, es Maestra en Ciencias por la Universidad Nacional Autónoma de México (UNAM), quien ha contribuido de forma significativa al conocimiento y documentación de la riqueza de las plantas que alberga México. En 1980, comenzó a trabajar recolectando integrantes de la familia Apiaceae provenientes del estado de Guerrero. Durante el periodo de 1981 a 1984 colaboró en el proyecto Desarrollo de las Colecciones Botánicas de la Escuela Nacional de Ciencias Biológicas del Instituto Politécnico Nacional (IPN). Actualmente es profesora-investigadora de la Universidad Autónoma Metropolitana unidad Iztapalapa y curadora del Herbario Metropolitano Ramón Riba y Nava Esparza (UAMIZ), labor que desempeña desde hace más de 35 años. Ha participado en diversos foros académicos, resaltando su asistencia a 13 Congresos Mexicanos de Botánica, cinco latinoamericanos y dos conferencias internacionales, donde ha realizado aportes en el conocimiento florístico y fitogeográfico de las monocotiledóneas mexicanas. Ha asesorado 11 servicios sociales y nueve tesis de maestría. Ha publicado más de 160 artículos científicos, dilucidando el conocimiento de 40 familias de plantas, pertenecientes en su mayoría a la clase Liliópsida y descrito más de 60 especies nuevas para la ciencia. En su honor le han dedicado tres especies: 1) Dalea rosarum Rzed. & Calderón (Fabaceae), descrita de Querétaro en 2015, 2) Pitcairnia anarosae Gonz.-Rocha, Mejía-Marín & Espejo (Bromeliaceae), de Oaxaca en 2020 y 3) Sisyrinchium anarosae Zamudio & Ceja (Iridaceae), de San Luis Potosí en 2021. La organización y la realización de cada trabajo con la mayor calidad posible, son dos de las infinitas enseñanzas que ha transmitido a generaciones de estudiantes, quienes desean mantener su legado.
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 of Jalisco? What is the endemism status of bromeliads in the region?
Studied species:
Native Bromeliaceae of WSC.
Study site and dates:
WSC region in Jalisco, collections from 1926 to 2020.
Methods:
Data were obtained by herbarium material revision and field expeditions. We analyzed life form, distribution by vegetation type, altitudinal range, and recollection activity per year. A richness map was generated. To determine the affinity of the bromeliad flora with other regions of the state, a cluster analysis was performed using UPGMA method.
Results:
We found nine genera and 53 species, richest genera were Tillandsia and Pitcairnia. Epiphyte was the commonest life form. Oak forest had the highest species number, most taxa were found between 250-750 m asl. Most collections come from the municipality of Cabo Corrientes accounting for 66 % of total species in WSC. The study area hosts six species of endemic bromeliads.
Conclusions:
Despite to their restricted distribution, none of the endemic species from WSC are listed under special protection. The WSC should be considered for conservation. The tourism development, deforestation and climate change could have a negative impact on bromeliads, especially epiphytes that depend entirely on the host trees.
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 bracts with the apex divergent to spreading (vs. red and appressed) and by the appendiculate at the base chartreuse-green petals (vs. not appendiculate yellow petals). Images and a distribution map of the taxa are presented. Resumen Se describe e ilustra Pitcairnia abscondita sp. nov., conocida hasta ahora únicamente de los municipios de Cabo Corrientes, Mascota, Puerto Vallarta, San Sebastián del Oeste y Talpa de Allende, en el estado de Jalisco, México. El nuevo taxon fue por largo tiempo confundido con P. imbricata, pero difiere de la misma por sus brácteas florales verdes con el ápice divergente a extendido (vs. brácteas rojas y adpresas) y por sus pétalos verdes chartreuse con apéndices en la base (vs. pétalos amarillos sin apéndices en la base). Se incluyen imágenes y un mapa de distribución de las especies.
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.
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 many are endemic?
Study site : México, 1887-2017.
Methods : Based on the study of the Mexican Bromeliaceae, including botanical collection, literature review, and revision, analysis and determination of specimens in 50 herbaria, data about species richness, Mexican endemics, and distribution of their taxa in the country, were obtained.
Results : In Mexico are represented four of the eight subfamilies of Bromeliaceae, 19 genera, 422 species, and 8 infraespecific taxa. The genera with the highest number of species in the country are Tillandsia (230/54.5 %), Hechtia (71/16.8 %) and Pitcairnia (50/11.8 %). 318 of the Bromeliaceae species are endemics to Mexico, as well as Ursulaea and Viridantha genera ; 172 species are microendemic. The entity with the highest number of taxa is Oaxaca, followed by Chiapas, Veracruz and Guerrero. Tlaxcala and Baja California Sur have the lowest species number. Baja California, Baja California Sur, Campeche, Ciudad de México, San Luis Potosí, Sonora, Tabasco y Tlaxcala have not strict endemic taxa.
Conclusion : Although progress in the knowledge of Mexican Bromeliaceae has been constant, exploration and recollection work is still required before concluding the Mexican bromeliad flora. It is also necessary to promote studies considering aspects of conservation and sustainable use.</p
