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Lamium purpureum grows with square stems to 5–20 centimetres (2–8 in), [4] rarely 40 cm, in height. [5] The leaves have fine hairs, are green at the bottom and shade to purplish at the top; they are 2–4 centimetres (3 ⁄ 4 – 1 + 1 ⁄ 2 in) long and broad, with a 1–2 cm petiole (leaf stalk), and wavy to serrated margins.
The stigma (from Ancient Greek στίγμα, stigma, meaning mark or puncture) is usually found at the tip of the style, the portion of the carpel(s) that receives pollen (male gametophytes). It is commonly sticky or feathery to capture pollen. The word "pistil" comes from Latin pistillum meaning pestle.
Ectogenesis – variation in plants due to conditions outside of the plants. Ectoparasite – a parasitic plant that has most of its mass outside of the host, the body and reproductive organs of the plant live outside of the host. Epigeal – living on the surface of the ground. See also terms for seeds. Epigean – occurring on the ground.
The stigma, together with the style and ovary (typically called the stigma-style-ovary system) comprises the pistil, which is part of the gynoecium or female reproductive organ of a plant. The stigma itself forms the distal portion of the style, or stylodia, and is composed of stigmatic papillae , the cells of which are receptive to pollen.
A plant cuticle is a protecting film covering the outermost skin layer 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 exclusively by the epidermal cells.
A multicellular, glandular hair that usually produces a mucilaginous substance and is located on sepal s, stipules, or petioles, or on nearby parts of stem s; commonly found on plants in the order Gentianales. columella In flowering plants, the central axis of the cone or fruit, e.g. in Callitris. column 1.
"Lenticel breakdown" is a global skin disorder of apples in which lenticels develop dark 1–8 mm diameter pits shortly after processing and packing. [ 18 ] [ 19 ] It is most common on the ' Gala ' ( Malus × domestica ) variety, particularly the ' Royal Gala ', and also occurs in ' Fuji ', ' Granny Smith ', ' Golden Delicious ', and 'Delicious ...
Most plants have an epidermis that is a single cell layer thick. Some plants like Ficus elastica and Peperomia, which have a periclinal cellular division within the protoderm of the leaves, have an epidermis with multiple cell layers. Epidermal cells are tightly linked to each other and provide mechanical strength and protection to the plant.