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Representatives of the subfamilies Bombacoideae, Byttnerioideae, Grewioideae and Helicterioideae in the Raso da Catarina Ecoregion. A. Ceiba glaziovii; B. Ceiba pentandra; C. Ceiba pubiflora; D. Pachira aquatica; E. Pachira endecaphylla; F. Pseudobombax parvifolium; G. Pseudobombax simplicifolium; H. Ayenia hirta; I. Melochia betonicifolia; J. Melochia illicioides; K. Melochia tomentosa; L. Waltheria albicans; M. Waltheria brachypetala; N. Waltheria indica; O. Waltheria operculata; P. Waltheria rotundifolia; Q. Corchorus hirtus; R. Triumfetta semitriloba; S. Helicteres eichleri; T. Helicteres velutina. Photos by J.B. Lima.
Source publication
This work presents a floristic survey of the subfamilies Bombacoideae, Byttnerioideae, Grewioideae and Helicterioideae (Malvaceae s.l.) in the Raso da Catarina Ecoregion (RCE), Bahia, Brazil. The samples analyzed were collected from September 2013 to May 2015. The analyses were supplemented with dried collections kept in the herbaria: ALCB, HRB, HU...
Citations
... The 26 genera of Byttnerioideae have been incorporated under four tribes: Byttnerieae, Hermannieae, Lasiopetaleae and Theobromateae. The member taxa of Byttnerioideae inhabit predominantly in the tropical and subtropical regions (Lima et al., 2019). In Bangladesh, this subfamily is consisted of 8 taxa under 7 genera and 3 tribes (Ahmed and Rahman, 2022). ...
Taxonomic revision and morphometrics are two crucial facets for the proper identification, updating of taxa, and strengthening phenetic relationships of angiosperms. This study focused on the systematics and morphometrics of the subfamily Byttnerioideae Burnett (Family Malvaceae) for the first time in Bangladesh, revealing eight taxa under seven genera, namely Abroma Jacq., Ayenia L., Guazuma Mill., Kleinhovia L., Melochia L., Theobroma L. and Waltheria L. These seven genera fall into three tribes: Byttnerieae, Theobromateae, and Hermannieae. Dichotomous bracketed keys to genera and species were generated. Detailed nomenclature, diagnostic characteristics, illustrations, representative specimens, notes on distribution and uses for each species were provided. Morphometrics study was conducted employing cluster and principal components analysis (PCA). Cluster analysis revealed close relationships between Theobromateae and Hermannieae tribes compared to Byttnerieae tribe in the form of UPGMA dendrogram. Similarity matrix revealed the highest affinity between Ayenia elegans Ridl. and Ayenia grandifolia (DC.) Christenh. & Byng. In the PCA analysis, the first two principal components explained approximately 82.26% cumulative variance. PCA-derived scatter and projection plots supported the topology and inter-relationships in the cluster analysis. These findings will enhance future conservation strategies, especially for the threatened and medicinally important taxa of Byttnerioideae in Bangladesh, and support molecular phylogenetic studies of the subfamily Byttnerioideae.
Herbal and plant extracts show diverse activities and have been used for centuries as
natural medicines for many health problems and diseases. Through the isolation and
analysis of the compounds in the extracts, it is possible to understand why the extracts
exhibit those activities, as well as the chemical metabolism of compounds that occur in
plants and herbs. Recently, there have been increasing attempts to develop herbal and
plant extracts into functional foods and drugs, but the legal requirements are becoming
stricter. We need sophisticatedly defined extracts through the isolation and analysis of
compounds comprising them in order to meet the legal requirements and to pursue
quality control strategies in the production of functional foods and drugs. This Special
Issue Book compiled the 15 recent research and review articles that highlight the
isolation, profiling, and analysis of compounds in herbal and plant extracts, as well as
quality control and standardized processing strategies for extracts with characteristic
compounds.
A polinização pode ser entendida como a transferência dos grãos de pólen das anteras até o estigma da mesma ou de outra flor. Este processo é importante para que haja a fertilização dos óvulos e o desenvolvimento das sementes. Para um grande número de espécies de angiospermas, a reprodução ocorre através da polinização cruzada, dependendo do agente que pode ser o vento, a água ou, mais comumente, os animais. A polinização constitui um evento muito importante para o ecossistema, pois assegura a manutenção da variabilidade genética da maioria das populações de angiospermas (Bawa, 1990).
Plants belonging to the subfamily Bombacoideae (family Malvaceae) consist of about 304 species, many of them having high economical and medicinal properties. In the past, this plant group was put under Bombacaceae; however, modern molecular and phytochemical findings supported the group as a subfamily of Malvaceae. A detailed search on the number of publications related to the Bombacoideae subfamily was carried out in databases like PubMed and Science Direct using various keywords. Most of the plants in the group are perennial tall trees usually with swollen tree trunks, brightly colored flowers, and large branches. Various plant parts ranging from leaves to seeds to stems of several species are also used as food and fibers in many countries. Members of Bombacoides are used as ornamentals and economic utilities, various plants are used in traditional medication systems for their anti-inflammatory, astringent, stimulant, antipyretic, microbial, analgesic, and diuretic effects. Several phytochemicals, both polar and non-polar compounds, have been detected in this plant group supporting evidence of their medicinal and nutritional uses. The present review provides comprehensive taxonomic, ethno-pharmacological, economic, food and phytochemical properties of the subfamily Bombacoideae.
O presente estudo compõe parte do projeto da Flora da Serra do Cipó, Minas Gerais, Brasil. Atualmente, Grewioideae é uma das nove subfamílias de Malvaceae. Morfologicamente, Grewioideae apresenta sépalas distintas sem nectários na base da face abaxial, presença de nectários na base das pétalas e no androginóforo, estames numerosos e anteras ditecas. Na área de estudo foram encontrados quatro gêneros (Apeiba, Corchorus, Luehea e Triumfetta) e cinco espécies (A. tibourbou, C. hirtus, L. divaricata, L. grandiflora e T. semitriloba), diferenciadas principalmente pelo hábito de vida (árvores ou arbustos), tamanho das flores e forma do fruto. Chaves de identificação em nível específico, bem como descrições detalhadas, ilustrações, comentários taxonômicos e lista de materiais examinados são apresentados.
