Anthoceros subtilis and A. telaganus (Anthocerotaceae): two new records for America from the hornwort flora of Mexico

In a recent trip to southern Mexico, Anthoceros subtilis and A. telaganus were recorded for the first time in Mexico and the American continent. Several previous records of A. subtilis were from Asia and one from Africa, and A. telaganus is known only from Indonesia. The new range extension of these two species is reported and the species are described and illustrated. Mexican populations of A. subtilis are characterized by small brown spores (26–42 μm), similar ornamentation on proximal and distal spore surfaces with papillate to tuberculate projections. Anthoceros telaganus is characterized by larger black spores (32–53 μm) with a smooth strip along the trilete mark on the proximal surface. Molecular genetic sequencing is needed to test whether Asian and American populations of these morphologically similar but geographically disjunct taxa are conspecific.

New record of Bacopa egensis (Plantaginaceae) for the flora of Mexico

Bacopa egensis is newly reported for the flora of Mexico and an updated key is provided for the Mexican Bacopa species.

The Hintons’ legacy to the knowledge of the flora of Mexico

<p><em>Background</em>: The Hinton family comprises three generations of plant collectors that have made an important contribution to the knowledge of the flora of Mexico. They have collected in 13 Mexican states and have provided material for the description of 8 genera and about 555 species new to science.</p><p><em>Question</em>: What is the contribution of the collections of the Hintons to our knowledge of the flora of Mexico? Where was their main collecting effort and how many species have been recorded?</p><p><em>Species study</em>: Vascular plants</p><p><em>Study site</em>: Mexico</p><p><em>Method</em>: Different national and foreign databases were consulted and a list of species collected by the Hintons was obtained. The records were reviewed to eliminate synonymy and a complete list of species and their distribution by states was compiled.</p><p><em>Results</em>: A total of 28,947 records were obtained and 25,717 of them were identified to species level. In addition to the family's collection, the herbaria with the largest number of records are LL-TEX, K, IEB, and MEXU. The records come from about 2,752 different collecting localities throughout Mexico and account for 5,730 species, 1,573 genera, and 233 families.</p><p><em>Conclusions</em>: Many of the specimens collected by the Hintons come from areas that are still underexplored today. The contribution of the Hinton family to the knowledge of the flora of Mexico represents an important legacy and their collections constitute an enduring source of information for people interested in the flora of Mexico<em>.</em></p>

El Boletín de la Sociedad Botánica de México en el contexto de las publicaciones científicas

A review of the role played by the Boletín de la Sociedad Botánica de México reveals it to be one of the leading scientific publications of long standing tradition in the development of plant sciences in Mexico. In its 50 years of existence, the Boletín has published 396 papers in 54 numbers. When these are evaluated, the preference of authors and the inclination of editors in selecting papers are principally directed toward taxonomic topics, followed by floristic studies, ecology, phytogeography and ethnobotany. An analysis of the last decade (beginning with number 44) shows that one genus and 34 species of plants new to science have described in the numerous taxonomic papers, thus contributing to the knowledge of the diversity of the flora of Mexico.

Métodos computarizados y algunas de sus aplicaciones al estudio de la flora de México

The use of computerized databases could be a viable alternative in the study of the flora of Mexico. However, very few articles have been published in Spanish about this area of research. This contribution is intended to provide an introduction to the field, with commentaries on the three types of databases most applicable to floristic studies. These are: 1) curatorial databases, concerned with the information from specimen labels; 2) bibliographic databases, containing reference to taxonomic literature, and 3) descriptive databases that permit the automatic production of identification aids of taxonomic descriptions derived from previously stored information.

Musgos de la Península de Yucatán, México. II.

Fifteen new state records are reported; among them five were not previously known for the Yucatan Peninsula. Pilosium chlorophyllum is, in addition, new to the moss flora of México.

CERVANTESIACEAE: NUEVO REGISTRO DE UNA FAMILIA NATURALIZADA PARA LA FLORA DE MÉXICO

<p>Se registra por primera vez para México la especie naturalizada Acanthosyris glabrata (familia Cervantesiaceae), un árbol hemiparásito sólo conocido del noroeste de Sudamérica. Se proporciona información sobre su hábitat y se presenta una ilustración de la especie. Se propone una hipótesis de comercio maritimo entre Ecuador y México para explicar la presencia del taxón en el occidente de México, en un área que dista 3500 km de su distribución original.</p><p><strong>Cervantesiaceae: New Record of a Naturalized Family for the Flora of Mexico</strong></p><p>We register for the first time in Mexico the naturalized species Acanthosyris glabrata (family Cervantesiaceae), a hemiparasitic tree only known from northwestern South America. We provide information about its habitat and present an illustration of the species. We propose a hypothesis of maritime commerce between Ecuador and Mexico to account for the presence of the taxon in western Mexico, in an area 3500 km away from its original known distribution.</p>

Tamarix hohenackeri Bunge, a new record for the flora of Mexico

Se documenta por primera vez la presencia de Tamarix hohenackeri Bunge para la flora de México. Se trata, a su vez, de la primera cita para el continente americano. Esta especie, nativa de Asia, ha sido recolectada en los márgenes del río San Salvador (Ensenada, Baja California). Se aporta una descripción morfológica detallada del nuevo taxon citado y se discute, también, su estatus taxonómico. Como resultado del estudio, se indica la presencia de seis especies del género Tamarix y además se aporta una clave para la identificación de los representantes de Tamarix en México.