Browsing by Autor "Alcibiades A. Angulo"

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A new species of Ceiba (Malvaceae, Bombacoideae), previously confused with Ceiba speciosa
(Q15088586, 2024) Heinz Arno Drawert; Alcibiades A. Angulo; Juan Carlos Catari
Based on the review of herbarium specimens, geo-referenced live images, and field observations, a new species of the genus Ceiba (Malvaceae) is described. Ceiba camba, the new species, has previously been confused with other species in the Ceiba insignis complex, specially with C. speciosa, and went undifferentiated despite having a wide distribution in the lowlands of central-western South America and being quite common. However, the new species here described shows clear visible morphological differences from C. speciosa and the other members of the genus. The main similarities and differences with other morphologically and geographically close species of the C. insignis complex (C. chodatii, C. crispiflora, C. insignis, C. lupuna, C. pubiflora, C. speciosa) are discussed.
Ceiba guarani (Malvaceae, Bombacoideae), a new species from sub-Andean southern Bolivia and the Sierras of northwestern Argentina
(Instituto de Botánica del Nordeste, 2024) Juan Carlos Catari; Heinz Arno Drawert; Alcibiades A. Angulo
Based on observations made during botanical surveys in the southern sub-Andean of Bolivia, analysis of collected material, review of herbarium material and online databases, we determined that the Ceiba populations of the xeric Bolivian-Tucuman forests, previously identified as Ceiba chodatii, correspond to a new species. Given that the morphological, ecological and distributional characteristics differ from those observed in populations of C. chodatii, we propose Ceiba guarani sp. nov. Our field observations and distribution data from the revised specimens indicate that C. chodatii is naturally restricted to the Chaco plains and a strip of the southern Subandean foothills, whereas Ceiba guarani is distributed mainly in the Subandean ranges.
Ceiba lupuna (Malvaceae): nuevo registro para Bolivia
(Instituto de Botánica del Nordeste, 2026) Juan C. Catari; Heinz Arno Drawert; Alcibiades A. Angulo; Samuel Sangueza Farah
Se reporta por primera vez la presencia de Ceiba lupuna (Malvaceae) en territorio boliviano, en la región de la Amazonia del departamento de Pando. Este registro amplía el número de especies del género Ceiba citadas para el país a 9 taxones y contribuye al conocimiento de la flora amazónica. La identificación se basó en observaciones morfológicas y fotográficas de individuos en estado reproductivo. Se discuten sus diferencias con Ceiba camba, especie morfológicamente similar y posiblemente confundida en la región.