midrib

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Related to midribs: venation

midrib

[′mid‚rib]
(botany)
The large central vein of a leaf.
References in periodicals archive ?
It differs by costules and midribs of the ultimate segments abaxially pubescent by long (0.
WPCs filled with pretreated and untreated particles of three wood species and date palm midrib fronds were manufactured, and their physical, mechanical, and dimensional stability properties were evaluated.
Vickers Hardness Values of the experimental spearheads, tested on the uppermost part of the midrib and in the small channel where the blade wing and blade edge meet.
subcylindrical to Norris-need compressed, midrib assessment with absent, DNA markers cryptostomata usually present; vesicles elliptical with long apiculate extensions.
The leafy part cooks more quickly than the midribs so tear or cut the midrib section, separating it from the leaf and cook the ribs for a few minutes before adding the leaves.
Stipe scales broadly lanceolate, 15-30 x 2-6 (8) ram; fronds narrowly lanceolate; midribs slightly prominent on both surfaces; sori long and sparse, occupying 2/3-3/4 length of veins, 6-10 sori every 2 cm length along midribs.
Three fast-growing trees, namely Acacia saligna, Conocarpus erectus, and Melia azedarach, as well as date palm (Phoenix dactylifera) midribs, were evaluated for their suitability for particleboard production.
These trichotomous midribs actually represent two quick bifurcations in immediate proximity.
The crisp midribs vary from very wide like those of 'Argentata' and 'Dorat', to the celery-likes ones of 'Fordhook Giant' and 'Ruby Red'.
The midribs of the leaves and stems are also pink, supporting late-in-the-season flowers of unexpected, brilliant orange.
Bracken glands occur on the leaf axis (at the junctions of the stipe and midribs of the pinnae and also at the junctions of the midribs of the pinnae and the midribs of the pinnules).