Morphology and its relevance for systematics is a promising field for the application of biosemiotic principles in scientific practice. Genital coupling in spiders involves very complex interactions between the male and female genital structures. As exemplified by two spider species,Nephila clavipesandNephila pilipes ssp. fenestrata, from a biosemiotic point of view the microstructures of the male bulb’s embolus and the corresponding female epigynal and vulval parts form the morphological zone of an intraspecific communication and sign-interpreting process that is one of the (...) prerequisites for sperm transfer. Hence these morphological elements are of high taxonomic value, as they play an essential role in mating and fertilization and consequently in establishing and preserving a reproductive community. Morphology clearly benefits from a biosemiotic approach, as biosemiotics helps to sort out species-specific morphological characters and to avoid problematic typological interpretations. (shrink)

In his commentary on Aristotle’s Physics, Nicole Oresme propounds a very specific theory of the ontological status of accidents. Characteristic of Oresme’s view on accidents is that he does not consider them accidental forms, but only so-called condiciones or modi of the substance. Unlike the term “modus”, the term “condicio” seems to be very characteristic of Oresme’s own terminology. Up to now it has been unknown whether Oresme exerted any influence with his condicio-theory of accidents. This paper presents an anonymous (...) 14th-century commentary on Aristotle’s Meteorology, in two Questions of which the term “condicio” occurs in an ontological context. Moreover, the text shows further striking coincidences with known works by Oresme, and this makes an influence by Oresme appear all the more probable. (shrink)