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The name Usnea is probably derived from the Arabic word Ushnah, meaning moss or lichen, though it may also mean "rope-like". [ 10 ] [ 11 ] Based on a fossil Usnea found in Baltic amber , the genus is known to date back to at least the late Eocene , about 34 million years ago.
The Parmeliaceae is a large and diverse family of Lecanoromycetes.With over 2700 species [2] in 71 genera, it is the largest family of lichen-forming fungi.The most speciose genera in the family are the well-known groups: Xanthoparmelia (822 species), Usnea (355 species), Parmotrema (255 species), and Hypotrachyna (262 species).
A podetium (plural podetia) is a lichenized stem-like structure of an apothecium rising from the primary body of the thallus. [4] Since it is part of the reproductive tissue, it is not considered part of the thallus. [4] The podetium may be branched, and sometimes cup-like. It usually bears the pycnidia or apothecia or both.
Parietal epithelial cell (PEC) Podocyte; Angioblast → Endothelial cell; Mesangial cell. Intraglomerular; Extraglomerular; Juxtaglomerular cell; Macula densa cell; Stromal cell → Interstitial cell → Telocytes; Kidney proximal tubule brush border cell; Kidney distal tubule cell; Connecting tubule cells; α-intercalated cell; β-intercalated ...
However, lichens in the genus Usnea have a fairly elastic cord running through the middle. [31] This is the most three-dimensional of the lichen growth forms, and the most sensitive to air pollution. [41] The term "fruticose" is derived from the Latin word fruticosus, meaning "shrubby" or "similar to a shrub" (from frutex, meaning "shrub"). [42]
Download as PDF; Printable version; ... Diagram of a plant cell and its constituent organelles. --> ... An example of the template with all diagrams activated.
The cells of the body's surface form the outer layer of skin. Inside the body, epithelial cells form the lining of the mouth and alimentary canal and protect these organs. Epithelial tissues help in the elimination of waste. Epithelial tissues secrete enzymes and/or hormones in the form of glands. Some epithelial tissue perform secretory functions.
The epidermis is the outermost of the three layers that comprise the skin, the inner layers being the dermis and hypodermis. [1] The epidermal layer provides a barrier to infection from environmental pathogens [2] and regulates the amount of water released from the body into the atmosphere through transepidermal water loss.