Allographa kamojangensis
Allographa kamojangensis is a species of script lichen in the family Graphidaceae. It was formally described in 2019 from specimens collected on jackfruit trees in the Kamojang geothermal field area of West Java, Indonesia. The lichen is characterised by its white-grey crusty thallus and prominent, irregularly branched fruiting bodies with black lips dusted with distinctive yellow-orange pigment. The species was first recognised from a photograph posted to a social media group, and has been cited as an example of the growing role of citizen science in contemporary lichen taxonomy.
Taxonomy
Allographa kamojangensis was described in 2019 by Muhammad Jatnika, Iin Noer, and Robert Lücking from material collected in West Java, Indonesia. The holotype was gathered at Kamojang on the bark and twig of Artocarpus heterophyllus. The species was first recognised from a photograph posted to the Facebook group "Lichens Connecting People", and subsequent study confirmed it as distinct. This episode has been cited as evidence of the growing role of social media and citizen science observations in contemporary taxonomy and biodiversity research. The epithet refers to the Kamojang geothermal field, a well-known site in West Java.Description
The thallus is corticolous and epiperidermal, forming a continuous, uneven, white-grey crust up to about 6 cm across; a was not observed. In section the thallus is 100–200 μm thick, with a cortex over a that is cloudy with numerous small crystals.Ascomata are te, irregularly branched and prominent, typically 2–4 mm long, 0.3–0.4 mm wide and 0.1–0.2 mm high. The is concealed; the are initially entire but can become striate with age, apically exposed and black, and laterally dusted with a yellow-orange pruina. Sections show a . No secondary metabolites were detected in the thallus by thin-layer chromatography, but the lirellae bear an orange anthraquinone pigment that in section reacts K+.
Ascospores number eight per ascus, are hyaline and I+, transversely septate with 13–15 septa, and measure 100–140 × 20–25 μm. The septa are thickened and the lumina are lens-shaped to rectangular.