Adjective
relating to or constituting plant stomata
relating to or of the nature of or having a mouth or mouthlike opening
Source: WordNetstomatal openings Source: Internet
The leaves are spirally arranged but slightly twisted at the base to be upswept above the shoot, needle-like, 2–3 cm long, gray-green to blue-green above with a single broad stomatal patch, and with two whitish stomatal bands below. Source: Internet
The increase in vascular bundle thickness further seems to correlate with the width of plant axes, and plant height; it is also closely related to the appearance of leaves and increased stomatal density, both of which would increase the demand for water. Source: Internet