hydathode


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hydathode

[′hīd·ə‚thōd]
(botany)
An opening of the epidermis of higher plants specialized for exudation of water.
References in periodicals archive ?
However, the presence of hydathode trichomes may also reflect the plant habitat, as it is not surprising to find hydathodes in aquatic or wetland plants (Metcalfe and Chalk, 1979).
Multicellular trichomes are present on the petiole of all evaluated species, classified in four types according to their shape and structure: hydathode trichome (Figure 2A), long cone-shaped trichome (Figure 2B), bulb-like base trichome (Figure 2C), and short cone-shaped trichome (Figure 2D), with distinct distribution among the species, and easily differentiated under SEM (Figure 2E-G).
through epidermal and epithemal hydathodes (Haberlandt, 1914;
exude through hydathodes located at the tips, edges, adaxial and abaxial
5 mm apart, diverging at 70-80[grados] from costa; hydathodes absent; fertile fronds 17-43 cm long; stipes ca 1/2 the frond length; fertile blades 11-18 x 1-1.
5 mm apart, diverging at 70-80[grados] from costa; hydathodes absent; fertile fronds (8-) 19-36 cm long; stipe 1/3-1/2 of the fronds length; fertile blade 6-17 x 1.
The structure and development of the hydathodes of Spartina townsendii Groves.
and thickening in the tracheids near the hydathodes (Garg et al.
Haberlandt (1894) pointed out that hydathodes and their analogues may also absorb water from the atmosphere.
associated with glands, hydathodes, and nectaries; Guttenberg (1943) and Napp-Zinn (1973-1973) provide some information on these topics.