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Astrothelium septemseptatum — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Astrothelium_septemseptatum
License (as archived): CC-BY-SA-4.0
Archived: 2026-11-10T05:30:59.563Z
SHA-256 of the archived text: 4d20f8e8ccedf4b524028182f3d97de67a6b120af89050b622d1db7e5ff47eb8
Stable URL of this page: https://metraipolis.com/documento/dc_ad770bb62ca0

How to cite

Astrothelium septemseptatum — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Astrothelium_septemseptatum (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_ad770bb62ca0 (Metraipolis archive dc_ad770bb62ca0, sha256 4d20f8e8ccedf4b524028182f3d97de67a6b120af89050b622d1db7e5ff47eb8)

BibTeX

@misc{dcad770bb62ca0,
  title = {Astrothelium septemseptatum — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Astrothelium_septemseptatum},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_ad770bb62ca0; sha256 4d20f8e8ccedf4b524028182f3d97de67a6b120af89050b622d1db7e5ff47eb8},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Astrothelium_septemseptatum. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Astrothelium septemseptatum is a species of corticolous (bark-dwelling), crustose lichen in the family Trypetheliaceae. Formally described as a new species in 2016 by Dutch lichenologist André Aptroot, it is found in Guyana and Venezuela, where it grows on trees in savanna and rainforest. The type specimen was collected by Harrie Sipman about 3 km (1.9 miles) south of Kuyuwini Landing (Upper Takutu-Upper Essequibo) at an altitude of 230 m (750 ft); there, it was found growing on smooth tree bark. The lichen has a smooth and somewhat shiny, pale yellowish-grey thallus with a cortex and a thin (0.5 mm wide) black prothallus line. It covers areas of up to 9 cm (3.5 in) in diameter. The presence of the lichen does not induce the formation of galls in its host plant. Both the thallus and the pseudostroma contain lichexanthone, a lichen product that causes these structures to fluoresce yellow when lit with a long-wavelength UV light. The combination of characteristics of the lichen that distinguish it from others in Astrothelium are the presence of lichexanthone in thallus and ascomata, and the ascospores, which are divided by from 7 to 9 septa and have dimensions of 50–55 by 12–17 μm.

Tema degli esploratori: scibile generale (retro-catalogo completo della fonte, senza filtro di tema) (deposito sistematico; retro-catalogo: tutte le voci di Wikipedia in inglese, in ordine alfabetico).
Fonte: Wikipedia in inglese, voce «Astrothelium septemseptatum» — https://en.wikipedia.org/wiki/Astrothelium_septemseptatum
Wikidata Q107504046: «species of lichen» (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q107504046
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Astrothelium_septemseptatum?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1306252920, consultata il 2026-11-10T05:27:56.703Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: c68342033b2413219f898b5fc8de5928b3cb28694bc18c640e86d684dc072a15