illustration of cross-section through leaf, showing upper epidermis, palisade mesophyll, xylem vesse - 維管組織 幅插畫檔、美工圖案、卡通及圖標
grape vine plant (vitis) xylem vessel element and tracheid cell magnification - 19th century - 維管組織 幅插畫檔、美工圖案、卡通及圖標
cross section digital illustration of plant with roots in soil and inset showing how water is drawn up through tubes in stem called xylem - 維管組織 幅插畫檔、美工圖案、卡通及圖標
mistletoe, viscum album, european holly, ilex aquifolium, oleander, nerium oleander, leaf cuticle sections - 維管組織 幅插畫檔、美工圖案、卡通及圖標
cross section of laurel clockvine, thunbergia laurifolia, rhynchosia phaseoloides, trumpet vine, tecoma radicans - 維管組織 幅插畫檔、美工圖案、卡通及圖標
study of oak, quercus, and white water lily, nymphaea alba, leaf anatomy and water absorption - 維管組織 幅插畫檔、美工圖案、卡通及圖標
tropical birthwort, aristolochia, carolina moonseed, menispermum carolinianum, milkvine, asclepiadaceae - 維管組織 幅插畫檔、美工圖案、卡通及圖標
spanish broom (spartium junceum) stem cross section, enlarged anatomical study - 維管組織 幅插畫檔、美工圖案、卡通及圖標
poison lettuce lactuca virosa and castor bean ricinus communis leaf anatomy showing milk tubes and spiral vessels - 維管組織 幅插畫檔、美工圖案、卡通及圖標
european yellow mistletoe, loranthus europaeus, and european mistletoe, viscum album, wood sections - 維管組織 幅插畫檔、美工圖案、卡通及圖標
cross section of garden strawberry fragaria grandiflora and water milfoil myriophyllum spicatum stems - 維管組織 幅插畫檔、美工圖案、卡通及圖標
this botanical engraving illustrates the internal cellular structure of a one-year-old twig of the blackcurrant (ribes nigrum) - 維管組織 幅插畫檔、美工圖案、卡通及圖標
illustration of cross-section through leaf, showing upper epidermis, palisade mesophyll, xylem vesse - 維管組織 幅插畫檔、美工圖案、卡通及圖標
deciduous tree branch, angiosperm stem, schematic cross section showing wood and bark tissues - 維管組織 幅插畫檔、美工圖案、卡通及圖標
leaf cross sections, erica caffra, empetrum nigrum, andromeda tetragona, tylanthus ericoides, salix reticulata - 維管組織 幅插畫檔、美工圖案、卡通及圖標
grass leaf anatomy, lasiagrostis calamagrostis and festuca porcii leaf cross sections - 維管組織 幅插畫檔、美工圖案、卡通及圖標
