Carbacanthographis tetrinspersa
| Carbacanthographis tetrinspersa | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Graphidales |
| Family: | Graphidaceae |
| Genus: | Carbacanthographis |
| Species: | C. tetrinspersa
|
| Binomial name | |
| Carbacanthographis tetrinspersa Aptroot (2022)
| |
Carbacanthographis tetrinspersa is a species of corticolous (bark-dwelling) script lichen in the family Graphidaceae.[1] Found in the primary rainforests of Mato Grosso, Brazil, C. tetrinspersa is named for its characteristic ascospores and inspersed hymenium.
Taxonomy
[edit]Described by the Dutch lichenologist André Aptroot in 2022, Carbacanthographis tetrinspersa is characterized by its distinctive lirellae (a type of fruiting body) with a pruinose (frosty appearance) disc and labia top, and its clavate (club-shaped) 3-septate (divided into three sections) ascospores. The species name tetrinspersa refers to the four-loculate (four-chambered) ascospores and the inspersed hymenium (the tissue layer containing the spore-producing asci).[2]
Description
[edit]The thallus of Carbacanthographis tetrinspersa is crustose (forming a crust-like layer) and continuous, closely adhering to the surface of the bark on which it grows. It has a dull, dirty white appearance and can cover areas up to 15 cm (5.9 in) in diameter, with a thickness of up to 0.1 mm. The photobiont (the algal partner in the lichen symbiosis) is trentepohlioid, a type of green algae.[2]
Ascomata (spore-producing structures) are erumpent (breaking through the thallus surface), solitary, and superficial, with linear, wavy, and often branched lirellae. The excipulum (the outer layer of the ascomata) is completely carbonised.[2]
Chemically, the thallus tests negative in UV light, C, K, KC, and P spot test reactions but shows a positive reaction for K (turning yellow). Thin-layer chromatography reveals the presence of stictic acid, a compound relatively rare in the Graphidaceae but known in genus Carbacanthographis.[2]
Habitat and distribution
[edit]This lichen grows on tree bark in primary rainforests, with its known distribution limited to its type locality in Brazil.[2]
References
[edit]- ^ "Carbacanthographis tetrinspersa Aptroot". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 31 March 2025.
- ^ a b c d e Aptroot, André; de Souza, Maria Fernanda; dos Santos, Lidiane Alves; Junior, Isaias Oliveira; Barbosa, Bruno Micael Cardoso; da Silva, Marcela Eugenia Cáceres (2022). "New species of lichenized fungi from Brazil, with a record report of 492 species in a small area of the Amazon Forest". The Bryologist. 125 (3): 435–467. doi:10.1639/0007-2745-125.3.433.