Ecology and Biology of Mangroves, Orientation Guide
by Selvam V., Karunagaran V. M. (2004)
M.S. Swaminathan Research Foundation Chennai –
Three different types of stomata namely, anomocytic, paracytic and diacytic are identified in mangrove leaves and they do not show any high degree of specialization. These types differ in their arrangements of guard cells and subsidiary cells. Guard cells are somewhat thick walled, often with prominent or even elaborate ledges.
The horn or beak like cuticular outgrowth covers the outer side of the stomatal pore or both the inner and outer sides. These structures provide resistance to stomatal transpiration (Fig. 20).