juice sac [
PO:0006013; plant anatomy term ]
As found in citrus the mature juice sac is a swollen sac with a slender stalk and a sac wall lined with layers of tightly arranged cells. It develops from a single cell of the endocarp. Endocarp develops from the carpellary inner epidermis.
More Synonyms: 胞のう (Japanese), juice vesicle, vesícula contenedora de jugo (Spanish)
Comments:
juvenile vascular leaf [
PO:0006339; plant anatomy term ]
A vascular leaf that is distinct from adult leaves, being characterized by particular anatomical traits namely, wax and trichome distribution, presence or absence of epidermal cell types, cell wall shape and biochemistry.
More Synonyms: 維管束系幼葉 (Japanese), hoja juvenil (Spanish)
Comments: Many species have juvenile leaves at the base of the stem, adult leaves at the apex, and transition leaves in between. In maize, juvenile leaves are at the tip of the stalk (stem), which differentiates first, with adult leaves at the base, while other grasses may have other arrangements. The first juvenile leaves in Poaceae are the embryonic leaves found in the grass kernel (caryopsis).