midrib


Also found in: Dictionary, Thesaurus, Wikipedia.

midrib

[′mid‚rib]
(botany)
The large central vein of a leaf.
References in periodicals archive ?
65) well preserved, oblong, thick, dark brown to black in color, midrib visible, other veins inconspicuous, margins of leaf slightly revolute.
The amount of chlorosis diminishes from the tip downward and from the margins toward the midrib.
There are several named mixes, such as Bright Lights, with superbly coloured midribs and veins in glowing golden yellow, shocking pink and deep crimson.
A thickened midrib was absent, and none of the gametophytes branched.
Purple midrib sweet potato leaves were sorted and prepared for cooking.
The midrib may be short and thick or thinner and reaching the apex, or any intermediate length.
However, researchers used date palm midrib residues in particleboard manufacture and tried to use the best manufacturing conditions to get acceptable quality requirements from such raw material (El-Mously et al.
Like the willow, these leaves show secondary, straight and unbranched veins that extend from a central midrib.
Parsnip leaves are compound, with 9-13 irregularly shaped, ruffled, toothed leaflets found along the midrib.
Thin sections of leaf midrib were taken and alkaloids were localized using 0.
The deficiency symptoms were a pale longitudinal strip along both sides of the midrib of the youngest leaf.
Rhizome elongated (internodes distinct), apex usually protruding more than 1 cm past leaves; pinnules near middle of blade dissected to midrib (pinnate); bulbletsabsent; leaf blades usually widest near middle C.