Starch reserves in Neotropical species ofMarattia(Marattiaceae-Pteridophytes)

[摘要] Starch grains found within the parenchymatous tissues of the rhizomes of seven Neotropical species ofMarattiaSw. (M. alata Sw.,M. cicutifoliaKaulf.,M. excavata Underw .,M. interpositaChrist, M. laevis Sm., M. laxa Kunze andM. weinmanniifoliaLiebm.) were studied here for the first time. Qualitative optical methods, a microscope provided with polarized light, and scanning electron microscopy have been used. Statistical tests have been applied to the results. Some morphological traits, such as shape, outline, size, and position of hilum are diagnostic at the specific level.

[学科分类] 植物学

[关键词] Marattia;Neotropics;starch;morphology