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Acta Amazonica

Print version ISSN 0044-5967On-line version ISSN 1809-4392

Acta Amaz. vol.7 no.2 Manaus June 1977

http://dx.doi.org/10.1590/1809-43921977072199 

BOTÂNICA

Estômatos em Briófitas e Pteridófitas. Alguns conceitos gerais

Eduardo Lleras* 

*— Instituto Nacional de Pesquisas da Amazônia, Manaus.

Resumo

Alguns aspectos dos diversos tipos de estômatos nas Briófitas e Pteridófitas são discutidos aqui. As classificações morfológicas (Van Cotthem, 1970) e ontogenéticas (Kondo, 1962) são comparadas, visando a encontrar uma correlação entre as duas. Também são consideradas em detalhes as diversas hipóteses sobre a formação de estômatos "flutuantes".

Summary

A review was made of the most recent literature on morphology and ontogeny of stomata in Bryophyles and Pteridophytes. Comparisons were made between Kondo's (1962) ontogenetic and Van Cotthem's (1970) morphological classification of stomata, and possible correlations of the two systems were considered. It was concluded that there is no direct correlation, in most cases, between the ontogeny of stomata and the morphology of adult stomata. Floating stomata were also considered, and the current accepted ontogeny is discussed.

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