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Erysiphe platani
(2012)
This work deals in two sections with the North American plane powdery mildew Erysiphe platani, an epidemiological study and a molecular phylogenetic analysis based on rDNA ITS sequence data. Most likely, the species was introduced in South Europe at the beginning of the 1960s. In 2007, it was observed for the frst time in Germany near Freiburg (SW Germany) and obviously did not reach other German states until 2009. A detailed monitoring from 2009 to 2011 shows that the fungus continually spread north- and northeastward with a speed of roughly 190 km/year. The northernmost record is from Arendsee in the north of Sachsen-Anhalt from 2011. We assume that the species has come from the Rhone valley and the Burgundian Gate fnally entering Germany in the Upper Rhine plain. The molecular phylogenetic analyses of material of different geographic origins indicate that specimens from Germany and Italy are identical, differ slightly from those from Greece and strongly from extraeuropean (Australia, USA) material. This might indicate a considerable rate of mutation of this powdery mildew with North American origin in the new European area. In addition, the phylogenetic analyses confrm that E. platani is related to other tree-inhabiting powdery mildew species previously accommodated in the genus Microsphaera.
The new genus and species Deltopyxis triangulispora is described. It is so far known from 14 sites in the south of Luxembourg and one in the neighbouring region of France. The discomycete forms very small, blackish-brown apothecia on bark, more rarely on wood, but particularly on more or less strongly senescent hymenia of Vuilleminia spp. The apothecia occur on dead, corticated, internally very slightly to rather strongly white-rotten, attached or broken, periodically dry branches at a height of about 1–3 m above ground. In most of the collections Vuilleminia was present and covered the
bast on one side of the branch, while the periderm still covered the remaining areas. D. triangulispora is so far recorded on angiosperm shrubs of the genera Corylus, Crataegus, Ilex, Prunus, and Salix, which had an advanced age or were already dead. The species prefers undisturbed, usually thermophilous hedges or open woodlands, especially close to their edges, but sometimes occurs also in dense, more air-humid woods. The fungus is characterized by 64-spored, elongate saccate, short-stalked, inamyloid, rather thin-walled asci which arise from croziers and open at the apex by a broad slit-like pore. The hyaline ascospores have a distinctly triangular shape when seen in profile view, but look slightly flattened, (ellipsoid-)deltoid in front view. In the living ascus they are arranged in a dense elongate cluster, which is forcibly discharged as one entity.
The position of Deltopyxis within the Ascomycota is unknown.
„Semper Apertus“
(2012)
On 5 August 1947, two years after the occupying American army had shut it down, the University of Heidelberg recognized Prälat Hermann Ludwig Maas (1877–1970) on his seventieth birthday with a doctorate honoris causa. The document which the Rektor, Prof. Hans Freiherr von Campenhausen, presented to Maas supported the honor with half a dozen reasons why he was worthy of the title Doktor, but the laudatio made no mention of the university’s debt to Hermann Maas that arose in the summer of 1945. Years later, when Maas was a walking, living legend in his own city, the popular press remembered that Maas and members of the Theological Faculty taught uninterruptedly during the Summer Semester of 1945 while other faculties
slumbered. Maas and his colleagues helped the university live up to its heralded motto: semper apertus.
Donaueschinger Wappenbuch
(2012)
A number of german late medieval armorials belong to the Bodensee group, named after their
region of manufacture. Strictly speaking, they do not make up a series of copies, but they share a
number of features. All include many marker coats-of-arms, i.e. combinations of legends and
figures-of-arms unlikely to have been invented independently. Some are curious mistakes of actual
arms, but most belong to the imaginary arms attributed to non-christian realms or to names from
literature. Some armorials include segments of ternionen (three best of each), notably the Nine
Worthies, quaternionen (the Pillars of the Empire), and / or organize parts of the german nobility by
their membership of tournament societies. Woodblocks were used for prestamping the outlines of
shields, helmets and manteling, and several were reused for different armorials. It is likely that part
of the sources used wasere older collations owned by or readily accessible to the artisans
responsible. Except for short fragments copying was rarely used, but pick-and-mix would be the
favoured approach, though by which guiding principles still need to b e clarified.