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The epidermis (from the Greek ἐπιδερμίς, meaning "over-skin") is a single layer of cells that covers the leaves, flowers, roots and stems of plants. It forms a boundary between the plant and the external environment. The epidermis serves several functions: it protects against water loss, regulates gas exchange, secretes metabolic ...
Trichome. Fossil stellate hair (trichome) probably of an oak, in Baltic amber; image is about 1 mm wide. Trichomes ( / ˈtraɪkoʊmz, ˈtrɪkoʊmz /; from Ancient Greek τρίχωμα (tríkhōma) ' hair ') are fine outgrowths or appendages on plants, algae, lichens, and certain protists. They are of diverse structure and function.
Plant cuticle. A plant cuticle is a protecting film covering the outermost skin layer ( epidermis) of leaves, young shoots and other aerial plant organs (aerial here meaning all plant parts not embedded in soil or other substrate) that have no periderm. The film consists of lipid and hydrocarbon polymers infused with wax, and is synthesized ...
List of plant genus names with etymologies (A–C) Canistrum (from the Greek for "basket") Since the first printing of Carl Linnaeus 's Species Plantarum in 1753, plants have been assigned one epithet or name for their species and one name for their genus, a grouping of related species. [1] Many of these plants are listed in Stearn's Dictionary ...
1. as a name misapplied by gardeners. 2. as an invalid name derived from horticultural writings of confused authorship. husk. Protective outer covering of certain seeds, for example, the leafy outer covering of an ear of maize (corn), the leathery covering of the walnut, or the spiky covering of the chestnut.
Dieffenbachia / ˌdiːfɪnˈbækiə /, [ 2] commonly known as dumb cane or leopard lily, is a genus of tropical flowering plants in the family Araceae. [ 3] It is native to the New World Tropics from Mexico and the West Indies south to Argentina.
Plant cells are the cells present in green plants, photosynthetic eukaryotes of the kingdom Plantae. Their distinctive features include primary cell walls containing cellulose, hemicelluloses and pectin, the presence of plastids with the capability to perform photosynthesis and store starch, a large vacuole that regulates turgor pressure, the ...
The epidermis is composed of multiple layers of flattened cells [4] that overlie a base layer ( stratum basale) composed of columnar cells arranged perpendicularly. The layers of cells develop from stem cells in the basal layer. The thickness of the epidermis varies from 31.2μm for the penis to 596.6μm for the sole of the foot with most being ...