Septotrapelia multiseptata
Introduction


***Septotrapelia multiseptata*** is a species of [bryophilous](/wiki/Bryophilous_lichen "Bryophilous lichen") ([moss](/wiki/Moss "Moss")\-dwelling) [lichen](/wiki/Lichen "Lichen") in the family [Byssolomataceae](/wiki/Byssolomataceae "Byssolomataceae"). Found in South Korea, it was [formally described](/wiki/Species_description "Species description") as a new species in 2014 by lichenologists [André Aptroot](/wiki/Andr%C3%A9_Aptroot "André Aptroot") and Kwang\-Hee Moon. The [type specimens](/wiki/Type_%28biology%29 "Type (biology)") were collected by the first author from Mabok\-san mountain ([Goheung County](/wiki/Goheung_County "Goheung County"), [South Jeolla Province](/wiki/South_Jeolla_Province "South Jeolla Province")) at altitudes between ; there, the lichen was overgrowing mosses that were growing on [siliceous rock](/wiki/Siliceous_rock "Siliceous rock"). It has a thin (less than 0\.1 mm thick) mottled greyish and olive green [thallus](/wiki/Thallus "Thallus") covering areas of up to about . The thallus lacks a [cortex](/wiki/Cortex_%28botany%29 "Cortex (botany)"); rather, it comprises small, irregularly shaped [areoles](/wiki/Areolate "Areolate") on a somewhat gelatinous crust. The [photobiont](/wiki/Photobiont "Photobiont") partner of the lichen is an [myrmecioid green alga](/wiki/Myrmecia_%28alga%29 "Myrmecia (alga)"), which measures 2–4 [μm](/wiki/Micrometre "Micrometre") in diameter. [Ascospores](/wiki/Ascospore "Ascospore") of the lichen have a long [ellipsoid](/wiki/Ellipsoid "Ellipsoid") shape, and measure 17–20 by 6\.5–7\.5 μm. The [species epithet](/wiki/Botanical_name "Botanical name") *multiseptata* refers to the 5 or 6 [septa](/wiki/Septum "Septum") that divide the ascospores into chambers.


What is Septotrapelia multiseptata?