Search results
Results From The WOW.Com Content Network
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.
Letharia vulpina, a species of fruticose lichen. A fruticose lichen is a form of lichen fungi that is characterized by a coral-like shrubby or bushy growth structure.It is formed from a symbiotic relationship of a photobiont such as green algae or less commonly cyanobacteria and one, two or more mycobionts. [1]
Promastigotes of Leishmania are transmitted to human skin by the bite of a sandfly. Leishmania then invades human macrophages and replicates intracellularly. A raised, red lesion develops at the site of the bite (often weeks or sometimes years afterwards). The lesion then ulcerates and may become secondarily infected with bacteria.
List of genes mutated in pigmented cutaneous lesions; List of histologic stains that aid in diagnosis of cutaneous conditions; List of human leukocyte antigen alleles associated with cutaneous conditions; List of immunofluorescence findings for autoimmune bullous conditions; List of inclusion bodies that aid in diagnosis of cutaneous conditions
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 ...
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.
A fungus that lives within the thallus of a lichen without producing any visible symptoms of disease; these fungi are transmitted horizontally. [165] Lecidea laboriosa is an endolithic lichen; the thallus, hardly visible, grows under and around the rock crystals, while the apothecia are visible on the surface. endolith Also endolithic.
Dolichousnea was originally circumscribed as a subgenus of the large genus Usnea, by Japanese lichenologist Yoshihito Ohmura in 2001. He considered that it was possible to treat the three taxa as a genus, but thought it more suitable to treat Dolichousnea at the rank of subgenus, because the taxa have the synapomorphies of the genus Usnea: a fruticose thallus, a central cartilaginous axis ...