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Agave vivipara L. andA. angustifolia Haw., considered conspecific by Wijnands, are shown to be two distinct species. A previous neotypification (as a lectotypification) ofA. angustifolia by Gentry is superseded because it is in conflict with the protologue; a new neotype is designated herein. The economic importance ofA. angustifolia is summarized.
Se describe e ilustra a Megastigma balsense, del bosque tropical caducifolio en la cuenca oriental del Río Balsas, Guerrero, México, como especie nueva para la ciencia. Es más afín a M. galeottii. Megastigma balsense, from the Río Balsas basin, in Guerrero, Mexico, is described as new and illustrated. It is related to M. galeottii.
BACKGROUND Global changes that affect local societies may cause the loss of ecological knowledge. The process of cultural change in Zapotec communities of the Oaxacan Isthmus intensified during the first years of the 20th century due to industrial and agro-industrial modernization projects and an increase in the level of formal schooling. Based on the case… (More)
Based on new information on floral structures, seedling, fruit, seed, root, and leaflet characters, Phaseolus dasycarpus is re-described and illustrated. Its chromosome number was determined as 2n = 22, with metacentric and submetacentric chromosomes, and karyotype formula of 9m + 2sm. Previous phylogenetic analyses of ITS and trnK sequence data, and those… (More)