midrib Definition

leaf, rib, costa, vein, coast, côte, petiole, bract, rachis, sepals, spikelets, umbels, anthers, inflorescences, spathe, axils, red osier dogwood, stamen, sapwood, calyx, panicles, swamp milkweed, internodes, mottling, racemes, underparts, berberis, trichomes, rootlets, papule, malar, cotyledons, germander, reddish purple, campion, spadix, threadlike, poinciana, hairlike, cambium, floret, forewings, caudal fin, flower bud, heliconia, echeveria, tubercles, catkin, dorsum, purplish red, plastron, whorl, seedpod, awns, maidenhair fern, swordlike, corydalis, laminae, cordyline, variegata, bougainvillaea, tuille, greyish brown, campanula, nutlets, vinca minor, variegation, punctate, ringlet, marsh marigold, culms, stolons, octahedron, anal fin, macules, allamanda, barbels, cotoneaster, tuberosa, bellflower, pelvic fin, hornworm, cineraria, strawflower, cranesbill, lutea, flower stalk, scurf, rubra, drupe, pistil, meadowsweet, snowberry, mullein, meristems, cankers, concavity, palps, bulbils, fontanelle,