Submissions must be typed, double-spaced, and left-justified. The type font must be Arial 12-point. In the organizational structure of the text, it is advisable to maintain the following sequence: Title, Author(s), Abstracts and Keywords (in the three languages that the journal publishes), Introduction, Material(s) and Method(s), Results, Discussions, Conclusions, Acknowledgements, and Bibliography. If the topic requires it, the proposed structure may vary but always respecting the order. Style guidelines are summarized below for every single part of this structure. If you have any doubts, send your queries to firstname.lastname@example.org.
Title. — The title of the article must be written in upper-case and lower-case letters, in bold. Names of species and genera in italics without identifying the author(s). Names of vascular plants must be followed by the family name in brackets (including subfamilies or tribes, if applicable) separated by commas. Names of the taxa of non-vascular plants, fungi and lichens are followed by the name of division and order, or family, in brackets and separated by a comma. If a specific geographical region is mentioned, the name of the country should be added in brackets, if it is necessary add the corresponding political subdivision.
Author(s). — The names of the authors must be written in lower-case with the initial letter in upper-case. In the case of a single author, or first author, write the surname followed by the full first name, and middle name initial. Works with more authors need the full first name, middle name initial and the surname (e.g.: Colotti, María T.; Guillermo M. Suárez; María M. Schiavone).
Indicate the institutional affiliation without abbreviations, address, zip code, city, province, and country. If two or more authors have different institutional affiliations, use a supra-index to indicate them. E-mail address of the main author or corresponding author must be indicated.
Abstract and keywords. — Articles must preserve the order: Abstract and Keywords. The abstract should consist of a single paragraph (without full stops) with a maximum of 300 words, it must be a brief explanation of the purpose and relevance of the study, materials and methods, main results and conclusions. Works containing nomenclatural novelties must be indicated in this section. Keywords must be arranged alphabetically, separated by a semicolon, their number varies from three to five, compound words will not be considered. It is also recommended to avoid the use of words included in the title.
General text. — The manuscript must follow the structure specified in the “Document Preparation and Text Format”. Use only two levels of headings: first-level headings (INTRODUCTION, MATERIAL AND METHODS, RESULTS AND DISCUSSION, CONCLUSION, ACKNOWLEDGMENTS, BIBLIOGRAPHY) and second-level headings. First-level headings must be centred, all-capitalized, with no full stop. Second-level headings must be in a separated line, left aligned, written in lower-case, and in bold. In the case of needing more levels of headings, number them hierarchically (e.g. 1.1, 1.2, 1.2.1., etc.). Latin names of genera, species and infraespecific categories must be written in italics except abbreviations like sp. nov. comb. nov., var., s. l., s. str., ex. Diacritical marks of the different languages must be respected (umlaut, acute, etc.), even for upper case letters. Sentences should not begin with abbreviations. Numbers must be written in Arabic characters, except the age to 10 or when they are used at the beginning of a sentence, in which case it is necessary to make use of the entire word. For units of measurement and abbreviations of cardinal points do not use point, for example: m, mm, μm, N, S, E, W, and NWA.
Taxonomic Treatments. — Nomenclature shall be governed by the International Code of Botanical Nomenclature. The bibliographic citation and synonymy of the taxa should be made as indicated in www.tropicos.org. A paragraph per basionym is used. If the author proposes a lectotypificacion, a new synonym or a new combination he or she must use “lectotype here designated” “syn. nov.”, or “comb. nov.”, respectively.
Keys must be dichotomous and left justified, with no indentation. Remember that dilemmas are not descriptions. Keys must be coincident with every taxonomic description and the characters of those dilemmas must be properly opposed. Example:
1 Leaf primordia large, apical to subapical ............................................. P. pseudobarbula
1' Leaf primordia small, always apical ........,,,,,,,,,,................................... 2
2 Propagula red to orange, leaf primordial, uncinate apex ..................... P. apolensis
2' Propagula yellowish brown, leaf primordia 4–9 with erect apex .......... P. australis
Studied Material. — To mention data, the following order must be maintained: Country (in full uppercase), province, locality, coordinates, altitude, date (the month in roman numerals), collector and number (in italics), acronym that identifies the material deposited (in uppercase and enclosed in brackets).
Example: ARGENTINA. Prov. Tucuman, Dpto. Tafí del Valle, 26º46'33.1''S 65º43'45.3''W, 2798 m asl, 07-VI-2009, Campero 234 (LIL).
Illustrations. — Figures (graphics, drawings, and photographs) should be sequentially numbered with Arabic numerals. In the case of a figure composed by multiple images, number them consecutively, e.g., Figs. 1A, 1B, etc. Figures should include a scale. Put the figure references on a separate page at the end of the text, they must be preceded by the name of the species (without authors), at the end of it indicate collector name, number and herbarium where it is deposited. As shown in the example:
Fig. 1. Zinnia peruviana. General appearance. A) Inflorescence of orange ligules. Opposite decussate phyllotaxy. B) Inflorescence of red ligules. C) Inflorescence of yellow ligules. Ponessa and Mercado S/N (LIL).
Bibliographic References and Citations. — Citations or references of the bibliography, shall be made in accordance with APA Style guidelines (http://www.apastyle.org/).
In-Text citations. — Include the surname of the first author and year of publication. If there are two, include both surnames and the year (e.g., de la Rosa & Messuti, 2014). If there are three to five authors, include all their surnames the first time the reference occurs (e.g., Silva Araújo, Alves Azevedo, Campos Silva, Strozi Alves, Meira, 2010) in subsequent citations include only the surname of the first author followed by "et al." (e.g., Silva Araújo et al., 2010). For more than five authors cite the surname of the first author followed by "et al." In the case of corporate authorship (institutions, ministries, agencies, civil society organizations, companies), cite the full name of the organization the first time it appears with the abbreviation indicated in square brackets [e.g., World Bank [BM] (1991)]. Thereafter, use the abbreviation only (e.g., BM, 1991).
In the case of multiple sources, cite them in a chronological order, and separate each source with a semicolon (e.g.: Domínguez, 1928; Toursarkissian, 1980; for the Lahitte & Hurrell, 1996; Alonso & Desmarchelier, 2005; Barboza et al., 2006, 2009).
In the case of several citations of the same author in the same year, indicate the year accompanied by a letter (e.g., 2011a, 2011b).
For unpublished personal communications, include the full name of the referent followed by the abbreviation "pers. comm." and the year (e.g., Albornoz, "pers. comm.", 2007).
Citations in the bibliography
The bibliography will include all works cited in the text, alphabetically ordered, and using indentation. Each citation begins with the surname of the first author. If there are several citations of the same author, cite them chronologically.
In the case of co-authors, follow the this order: first, publications of the author only; second, publications of the author and a co-author; then publications of the author with two or more co-authors, and so on. If it is the same author(s) and year of publication, sort by location and sequence in the text by adding a letter to the year (e.g.: 2011a, 2011b). Use the following APA style formats:
Giudice, G. E. (1999). Synopsis of the Argentinean species of the genus Adiantum (Pteridaceae, Pteridophyta). Darwiniana 37: 279-300.
de la Rosa, I. N. & Sampedro Arrubla, M. I. (2014). The species of the genus Lecanora (Ascomycota, Lecanoraceae) in the province of Tucumán (Argentina). Lilloa 51 (1): 33-45.
Cibils L., Prince, R., Márquez, J., Gari, N. & Albariño, R. (2015). Functional diversity of algal communities from headwater grassland streams: How does it change following afforestation? Aquatic Ecology 49: 453-466. doi: 10.1007/s10452-015-9538-z.
Format for citing Books
Lee, R. E. (2008). Phycology. New York, USA: Cambridge University Press.
Format for citing chapters of books
Sirombra, M. G. (2007). Aspectos ecológicos de humedales. A functional approach. In: D. Cicerone, M. V. Hidalgo (Eds.), Los Humedales de la Cuenca del Río Salí. Argentina (pp. 67-83). Buenos Aires: Jorge Baudino Editions.
Format for citing electronic sources
Thiers, B. (2015) Index Herbariorum: a global directory of public herbal and The associated staff. New York Botanical Garden's Virtual Herbarium. Retrieved from http://sweetgum.nybg.org/ih
Zuloaga, F. O., Morrone, O., Belgrano, M. J. (2006). Dioscorea (Dioscoreaceae) Catálogo de las plantas vasculares de Argentina. Instituto de Botánica Darwinion. Retrieved from http://www.floraargentina.edu.ar.
Personal communications should be cited within the text, but not included in the list of references.
Theses and Dissertations
Suárez, G. M. (2008). Sistematica y Filogenia de las especies neotropicales del género Pohlia (Musci). (Doctoral dissertation), National University of Tucumán, Argentina.