3 research outputs found
Morphological and anatomical features of the flowers and fruits during the development of Chamissoa altissima (Jacq.) Kunth (Amaranthaceae)
Morphological and anatomical features of the flowers and fruits during the development of Chamissoa altissima (Jacq.) Kunth (Amaranthaceae)
The morphology and structure of the flowers and fruits of Chamissoa altissima (Jacq.) Kunth during the development were analyzed. The plant material was fixed in FAA 50, embedded in historesin and sectioned according to standard techniques. The flowers presented tepals with betalain and homogeneous mesophyll; receptacular nectary; anthers with epidermis, endothecium, one middle layer, and uninucleate tapetum; and monocarpelar ovary with homogeneous mesophyll. The fruit was a circumscissile capsule, presented the same number of cellular layers that the ovary, and possessed subendocarpic sclerenchyma. The seed was bitegmic, exotestal and perispermic.Chamissoa altissima (Jacq.) Kunth ocorre em remanescentes florestais de MaringĂĄ, ParanĂĄ, Brasil e se destaca por seus frutos zoocĂłricos envolvidos por sĂ©palas vermelhas. As flores e frutos em diferentes fases de desenvolvimento sĂŁo descritos estruturalmente. O material botĂąnico foi fixado em FAA 50, emblocado em historresina e secionado conforme tĂ©cnicas usuais. As flores apresentam sĂ©palas com betalaĂna e mesofilo homogĂȘneo; nectĂĄrio receptacular; anteras com epiderme, endotĂ©cio, uma camada mĂ©dia e tapete uninucleado; e ovĂĄrio monocarpelar com mesofilo homogĂȘneo. O fruto Ă© uma cĂĄpsula circuncisa, apresenta o mesmo nĂșmero de camadas celulares que o ovĂĄrio, e possui esclerĂȘnquima subendocĂĄrpico. A semente Ă© bitegumentada, exotestal e perispĂ©rmica