Inga Mill.
Referências
município de Caetité, Estado da Bahia, Brasil. Hoehnea 48: e392020. http://dx.doi.org/10.1590/2236-8906-39/2020
Caetité, Estado da Bahia, BrasilBauhinia L.
Arbusto ou árvore, tronco cilíndrico ou estriado; ramos inermes ou armados. Estípulas basifixas, caducas. Filotaxia alterna-dística. Folha unifoliolada, bilobada, nervação actinódroma, ápice bilobado, margem inteira, base rotunda, cordada, bicolor, coriácea, peciolada. Inflorescência terminal ou axilar, cimosa ou racemosa. Flores pediceladas, hipanto presente, zigomorfas, dialipétalas, pentâmeras, monóclinas, hipóginas; cálice dialissépalo, às vezes sépalas unidas; corola dialipétala, alva, amarela, vermelha, rosa, vinho; androceu 1-5-10-estames, homodínamos ou heterodínamo, anteras elípticas, rimosas; gineceu simples, ovário estipitado, unicarpelar, unilocular, pluriovulado, estilete presente, estigma plano. Fruto legume típico, linear, plano, valvas lignosas. Sementes, ovadas, obovadas a oblongas, testa dura, lisa.
Abstract A synopsis of the Leguminosae from the Park Nacional das Nascentes do Rio Parnaíba (PNNRP), located in the northern and northeastern regions of Brazil, is presented herein. A total of 68 species and 2 infraspecific taxa belonging to 29 genera and four subfamilies (i.e., Caesalpinioideae, Papilionoideae, Detarioideae, and Cercidoideae) were recorded. Of these, 14 species were considered new records for the northeastern or northern regions of Brazil, or for the states encompassing PNNRP. Genera with the highest number of species were Chamaecrista (15 spp.), Bauhinia (8 spp.), and Mimosa (6 spp.). Regarding plant physiognomies where the species were collected, Cerrado sensu stricto was predominant, followed by Cerradão and Veredas. Most of catalogued species had an unassessed conservation status, except for Bowdichia virgilioides, Chamaecrista coradinii, and Hymenaea parvifolia, which were classified as Near Threatened and Vulnerable, respectively. Treatment includes information on geographical distribution and taxonomic notes for species with an extended range.
Key words: Fabaceae, diversity floristics, MATOPIBA, New records, Northeast Brazil
Circumscribing Chamaecrista section Baseophyllum (Caesalpinioideae, Leguminosae) based on molecular data and morphology
Floral Nectaries in Leguminosae: Structure, Diversity, and Possible Evolution
Abstract Leguminosae, the third largest angiosperm family, is a taxon displaying the excep tional diversity of flowers and having great agricultural significance. Despite the broad range of reproductive strategies in this group, floral nectar is a key reward of legumes. The paper aims to summarize the available data on structure, ontog eny, regulation, and possible evolution of the leguminous floral nectaries. To date, detailed characterization of ultrastructure and mode of secretion is available only for a few representatives of the family whereas the majority remains understudied from this perspective. In most cases, regardless of flower symmetry, nectaries are localized between stamens and a carpel. The nectar is usually exuded from modified stomata although the exact mode of secretion by specialized parenchyma may differ between taxa. The leguminous floral nectaries often have certain features of mono symmetry with preferentially abaxial development. Nectaries were independently lost in several lineages, and equally recurrent is the emergence of substitutive, i.e. evolutionary innovative, nectar-producing structures. Floral nectaries possess a cer tain degree of evolutionary inertia, i.e. they remain stable even in lineages in which f lower morphology underwent significant changes compared with an ancestral plan, such as shifts in merism, symmetry, reduction or polymerization of organs and alike. Due to their evolutionary stability, floral nectaries are rarely used in the tax onomy of Leguminosae.
Keywords Androecium · Fabaceae · Monosymmetry · Nectar · Pollination
-Sinjushin, A. Floral Nectaries in Leguminosae: Structure, Diversity, and Possible Evolution. Bot. Rev. (2024). https://doi.org/10.1007/s12229-024-09305-4
Liana inerme. Estípula basifixa. Folha alterna, trifoliolada, pecíolo menor que a raque. Inflorescência racemo ou pseudorracemo; brácteas ausentes, nectário presente. Flor subséssil, zigomorfa, monoclina, hipógina, cálice tubuloso, lobos 5, 2 superiores maiores que os 3 inferiores; corola papilionácea, pétalas unguiculadas, rosas, androceu monadelfo, estames; gineceu simples, ovário pluriovulado. Fruto legume-típico, linear, plano, valvas lignosas. Semente com testa lisa, castanho, hilo basal, oblongo.
Canavalia ensiformis (L.) DC., Prodr. 2: 404. 1825.