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Usnea is a genus of fruticose lichens in the large family Parmeliaceae. The genus, which currently contains roughly 130 species, was established by Michel Adanson in 1763. Species in the genus grow like leafless mini- shrubs or tassels anchored on bark or twigs.
These 23 skin rash pictures and expert tips can help you decipher your skin. ... Other symptoms: Ringworm rashes are often quite itchy and may also come with a burning or stinging sensation.
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).
Other symptoms to note: Drug rashes can be a side effect of or a reaction to a new medication; almost any medication can cause a drug rash, but antibiotics and NSAIDs are the most common culprits ...
A byssoid lichen has a wispy, cottony or teased wool appearance due to the loosely woven hyphae in its thallus. [13] It has no outer cortex. [14] Lichens with this growth type can be split into two types. In one type, the thallus is dominated by fungal hyphae, with a photobiont – typically a coccoid green alga – sprinkled throughout. In the ...
Cellulitis. Cellulitis looks like a rash, but is actually an infection of the middle layer of skin, says Dr. Yadav. It causes the skin to become diffusely red, swollen, tender, and hot to the ...
Usnea sphacelata is a species of saxicolous (rock-dwelling), fruticose lichen in the large family Parmeliaceae. It is found in both polar regions of Earth , as well as in southern and northern South America and in New Zealand.
Lichen thalli provide a complex and varied habitat for lichenicolous fungi, characterised by biological gradients that range from actively growing to decaying parts. This diversity within a single thallus creates a spectrum of microenvironments, which may contribute to the diversification of fungal life strategies.