Blatnik pri Črmošnjicah was attested in written sources as Ruespach in 1574.[5] The toponym Blatnik is relatively common in Slovenia and generally refers to low-lying areas near water; it is also found as a hydronym and surname. The name is derived from the common noun blato 'mud; swamp, marsh', which is also the root of names like Blače, Blatno, and Blate.[6] In this case, the settlement lies in an area with several karst springs feeding Blatnik Creek (Blatniški potok), a tributary of Vrčica Creek.[7] In the past, Blatnik pri Črmošnjicah was known as Rußbach in German.[2] The name Rußbach is a compound of Ruß 'soot(y), black' and bach 'creek', referring to the former name of Blatnik Creek[7] (cf. also medieval Růzpach, now Sajevec).
Church
View from west
Interior
Holy Cross Church
The local church is now only a ruin. It was dedicated to the Holy Cross and was a Baroque building from the mid-17th century.[8]
^"Blatnik pri Črmošnjicah". Slovenska historična topografija. ZRC SAZU Zgodovinski inštitut Milka Kosa. Retrieved February 15, 2021.
^Snoj, Marko (2009). Etimološki slovar slovenskih zemljepisnih imen. Ljubljana: Modrijan. p. 63.
^ abFerenc, Mitja; Zupan, Gojko (2011). Izgubljene kočevske vasi, vol. 1 (A–J). Ljubljana: Znanstvena založba Filozofske fakultete Univerze v Ljubljani. pp. 74–77. ISBN9789612374273.
^"EŠD 2740". Registry of Immovable Cultural Heritage (in Slovenian). Ministry of Culture of the Republic of Slovenia. Archived from the original on 27 March 2012. Retrieved 4 March 2011.