Nomenclatural Notes and Typifications of Cordiaceae Names from the Flora of Argentina

During the preparation of the treatment of the family Cordiaceae for the Flora of Argentina project, some names were identified as requiring clarification following the Shenzhen Code. In this context, a lectotype is designated for Patagonula americana L. var. glabra Cham., a second-step lectotype for Varronia dichotoma Ruiz & Pav., and updates and supporting information for four names already typified by I. M. Johnston (Cordia guaranitica Chodat & Hassl., C. salicina DC., Lithocardium gerascanthus (L.) Kuntze var. puberulum Kuntze, and Saccellium lanceolatum Bonpl.) are provided. Furthermore, remarks on the type of P. tweediana Miers are provided.

New records of mosses from the Dry Chaco forest of Santiago del Estero, Argentina

Background and aims: The bryophyte flora of Argentina is currently under study, nevertheless, there are still extensive areas unexplored, such as Santiago del Estero with only three records of bryophytes to the entire region. The aim of this work was to contribute to the knowledge of the moss flora of Santiago del Estero province, through the collection of samples in Copo National Park and surroundings. M&M: The specimens were collected in the Copo National Park and surroundings, processed and studied according to traditional techniques for bryophytes. Microscopic characters were observed with stereoscopic and light microscopy. A list of the species found is presented, with comments on the differentiating characters, habitat and distribution. Results: The following moss taxa were found to be new records for the province: Aloina rigida; Dimerodontium balansae; Didymodon umbrosus; Fabronia ciliaris; Macrocoma tenuis subsp. sullivantii; Pseudocrossidium arenicola; P. linearifolium; Stereophyllum radiculosum; Syntrichia chisosa, Trichostomum brachydontium and Venturiella glaziovii. The range of distribution of Tricherpodium beccarii is extended to the northeast of the province. Conclusions: Eleven species and one subspecies, distributed in ten genera and five families, are newly reported for the province of Santiago del Estero. The range of distribution of one species is extended to the northeast of the province. These first studies highlight the unexplored floristic richness of the region and its vulnerability due to the accelerated advance of the agricultural-livestock border.

Going unnoticed for 40 years: about the presence of the exotic Suaeda paradoxa (Chenopodiaceae, Suaedoideae) in Argentina

As a part of ecologic studies conducted in wetlands of Patagonia, Argentina, and in the frame of taxonomic studies within Chenopodiaceae for South America, we collected specimens of Suaeda that did not match the features to any of the species currently known to the Flora of Argentina. The aim of this contribution is to report for the first time the presence of Suaeda paradoxa in Argentina, by the means of the study of living plants and herbarium material, original descriptions, type material, and complementing with a distribution map, photos, a diagnostic key, and a comparative table to the herbaceous species of Suaeda in Argentina. Also, some comments regarding ecological and distributional features are discussed. This is the first record of S. paradoxa outside its native distribution range.

Typifications of 31 names in Azorella (Azorelloideae, Apiaceae) from South America

The genus Azorella, as currently circumscribed, with 58 species, is taxonomically complex. Therefore, the typification of its names is particularly important for the correct delimitation of its species. Recent taxonomic revisions within the group contributed to the nomenclature in this respect, but as part of the studies for the Flora of Argentina project, many names in Azorella still need typifications. To resolve typifications, protologues and available original material for all names were studied, and decisions were made following the International Code of Nomenclature for algae, fungi, and plants, and based on our expertise on the taxonomy of the group. As a result, 27 lectotypes, and 4 neotypes are designated here.

Tipifications of 22 names of Apiaceae subfamily Saniculoideae from southern South America

Typification (the selection of a permanent reference specimen to a name) is necessary for the correct identification of plant species, and requires an expert knowledge of the taxonomic group under study and of the nomenclatural rules. While preparing the treatment for Flora of Argentina, names of Apiaceae subfamily Saniculoideae were found to need typification. These names include species of Eryngium and Sanicula. To resolve these typifications, protologues and the original material of all names were studied, and decisions were made following the International Code of Nomenclature for Algae, Fungi, and Plants (Shenzhen Code). As a result, 20 lectotypifications and three neotypifications are designated here, giving justifications for each selection.

Typification of plant names belonging to subfamily Apioideae (Apiaceae) for the Flora of Argentina

Names of Apiaceae subfamily Apioideae were found to need typification, as part of the studies for the Flora of Argentina project. To resolve typifications, protologues and type specimens of all names were studied. As a result, 27 lectotypifications (including two second step lectotypifications) and 2 epitypifications are designated here, giving brief justifications for each selection. In addition, a new synonym in Daucus is proposed.

Novedades corológicas de Taraxacum F.H. Wigg. (Asteraceae) para la flora de Argentina, Colombia y Perú

Chorological novelties of Taraxacum F.H. Wigg. (Asteraceae) for the flora of Argentina, Colombia and PeruPalabras clave: Taraxacum, América del Sur, distribución, fitosociología.Key words: Taraxacum, South America, distribution, phytosociology.