Oxalis valdiviensis Barnéoud

Cholila. Región del Río CorcovadopublishedVersio

Floristic and vegetation structure of a grassland plant community on shallow basalt in southern Brazil

Few studies have adequately described the floristic and structural features of natural grasslands associated with shallow basalt soils in southern Brazil. This study was carried out on natural grazing land used for livestock production in the municipality of Santana do Livramento, in the Campanha region of the state of Rio Grande do Sul, Brazil. The aim of the study was to describe the floristic and structural diversity of the area. The floristic list obtained comprises 229 plant taxa from 40 botanical families, with a predominance of the families Poaceae (62), Asteraceae (28), Fabaceae (16) and Cyperaceae (12). The estimated diversity and evenness in the community were 3.00 and 0.874, respectively. Bare soil and rock outcrops accounted for 19.3% of the area, resulting in limited forage availability. Multivariate analysis revealed two well-defined groups among the sampling units. One group showed a high degree of internal aggregation, associated with deep soils, and was characterized by the presence of tussocks, whereas the other was less aggregate and was characterized by prostrate species growing on shallow soil. Ordination analysis indicated a gradient of moisture and of soil depth in the study area, resulting in different vegetation patterns. These patterns were analogous to the vegetation physiognomies described for Uruguayan grasslands. Overall, the grassland community studied is similar to others found throughout southern Brazil, although it harbors more winter forage species. In addition, the rare grass Paspalum indecorum Mez is locally dominant in some patches, behaving similarly to P. notatum Fl., a widespread grass that dominates extensive grassland areas in southern Brazil

Ethnobotany genomics - discovery and innovation in a new era of exploratory research

We present here the first use of DNA barcoding in a new approach to ethnobotany we coined "ethnobotany genomics". This new approach is founded on the concept of 'assemblage' of biodiversity knowledge, which includes a coming together of different ways of knowing and valorizing species variation in a novel approach seeking to add value to both traditional knowledge (TK) and scientific knowledge (SK). We employed contemporary genomic technology, DNA barcoding, as an important tool for identifying cryptic species, which were already recognized ethnotaxa using the TK classification systems of local cultures in the Velliangiri Hills of India. This research is based on several case studies in our lab, which define an approach to that is poised to evolve quickly with the advent of new ideas and technology. Our results show that DNA barcoding validated several new cryptic plant species to science that were previously recognized by TK classifications of the Irulas and Malasars, and were lumped using SK classification. The contribution of the local aboriginal knowledge concerning plant diversity and utility in India is considerable; our study presents new ethnomedicine to science. Ethnobotany genomics can also be used to determine the distribution of rare species and their ecological requirements, including traditional ecological knowledge so that conservation strategies can be implemented. This is aligned with the Convention on Biological Diversity that was signed by over 150 nations, and thus the world's complex array of human-natural-technological relationships has effectively been re-organized

Nomenclatura plantarum americanarum IV. Solanaceae

Volume: 62Start Page: 441End Page: 44

Lythraceae Argentinae

El presente trabajo es una revisión de todas las especies de Lythraceae de Argentina. Aquí el autor describe una nueva especie, Cuphea bonplandii, y sus nuevas variedades: Cuphea racemosa (L. f.) Spreng. variedad discolor, C. r. variedad palustris y C. mesostemon Koehne var. misionera Se citan por primera vez para Argentina las siguientes especies: Ammannia latifolia L., Cuphea costata Koehne, C. ingrata Cham. et Schlecht., y C. ianthina Koehne

Oxalidaceae extra-austroamericanae. II. Oxalis L. Sectio Corniculatae DC

Volume: 42Start Page: 57End Page: 19

Oxalidaceae extra-austroamericanae. I. Oxalis L. Sectio Thamnoxys Planchon

Volume: 29Start Page: 449End Page: 47

The Machris Brazilian Expedition. Botany: Lythraceae

Volume: 72Start Page: 1End Page: 1