Stomata of Hybanthus (Violaceae)

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Hybanthus enneaspermus

Epidermal structure and development of stomata in vegetative and floral organs of Hybanthus enneaspermus (Linn.)F. Muell

by Inamdar J. A. (1969)

in Biologia Plantarum, 1969, Volume 11, Issue 3, pp 248-255


The present paper deals with the epidermal structure and ontogeny of stomata in vegetative and floral organs of Hybanthus enneaspermus.
The epidermal cells are either polygonal or elongated with straight, sinuous or arched thick anticlinal walls. The surface of the cuticle shows parallel striations radiating from the guard cells or hair bases. Unicellular and uniseriate bicellular trichomes with verrucose margins have been observed on all organs.
The mature stomata are anisocytic, paracytic, anomocytic and transitional between anisocytic and paracytic.
The ontogeny of anisocytic and paracytic stomata is syndetocheilic or mesogenous, anomocytic is haplocheilic or perigenous, while that of the transitional type is mesoperigenous.
Four types of stomata have been observed on all the vegetative and floral organs and their ontogeny from organ to organ of this plant is constant. Stoma with a single guard cell is the result of disintegration of one of the guard cells before or after pore formation. Contiguous stomata are also occasionally noticed.
See also: Springer Link
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Published by

Willem Van Cotthem

Honorary Professor of Botany, University of Ghent (Belgium). Scientific Consultant for Desertification and Sustainable Development.