Mittwoch, 19. Februar 2014

Cryptogams of the Ruhr-University Bochum 2014

As in the years 2012 and 2013, I participated in a Field Trip to the Ruhr-University, which looks for Moses, Lichens and Fungi, which grow in the urban surrounding of the campus. So, it's also time for a new report about this field trip. Unfortunately, I didn't made a report in 2013, because there was to many snow and so I hadn't enough lichens or mosses for an interesting report. So, the temperate winter, which we have in Germany this year, may not be good enough for winter sports but it's ideal for some kind of hobby Lichenology. The Field Trip was organized by the “Botanischer Verein Bochum e. V.”, of which I'm a member.

1) The areal

The field trip is part of a series of field trips, which examine the population and diversity of lichens and mosses at the Campus of the Ruhr-University in Bochum, Northrhine-Wesphalia. It started three years ago in 2011 and each year, another part of the Campus was examined. This year, the field trip takes a closer look at a small area in the south west of the University. It starts at the “Kulturcafe”, a meeting point for students, and leads along the facades and over the rooftops of the buildings, which host the faculty of medicine. 

Campus of the Ruhr-University; the concrete plates
are ideal for liches

As with many urban areas, the Campus of the Ruhr-University is a good place to find many different lichens and mosses. The buildings are made of concrete, whose rough ground is ideal for these organisms to adhere. In addition, the different composition of concrete, which is often made of many various kinds of rocks, provides a potent high diversity of species in a small areal. For example, on a piece of a wall, which is made of very calcareous concrete, you can find lichens, which prefers lime. On the other side, you may find more acid preferring lichens on a concrete wall, which is made of gravel.

Another impression of the areal

Another advantage of such places is the missing of dense vegetation. As a result, Mosses and Lichens are easier to detect and also not in competition with higher plants for light, nutrients and water.

2) About Lichens & Mosses

In past articles, I've already written about the basic attributes and the biology of Mosses & Lichens, so a repeat at this place wouldn't make sense. So, if you want to know more about these very interesting organisms in detail, just look at my other Articles about the the last field trip and the basics about lichens.

3) List of Species

4) Pictures


C. citrina

 C. concolor (yellow)

Cladonia chlorophaea

Cladonia subulata

  Cladonia furcata

 Evernia prunastri - here on a wall and not on a tree

 Flavoparmelia caperata

 Hypogymnia tubulosa

Hypogymnia physodes

Lecanora dispersa

 Lecanora muralis

Stereocaulon vesuvianum

Physcia caesia


 Grimmia pulvinata

 Bryum caespiticium

Polytrichium juniperinum

Bryum argentum

 Bryum barnesii

Ceratodon purpureus

 Funaria hygrometrica

Tortula ruralis

Other species

 Dacrymyces stillatus (orange spots on wood)
 Paranectria oropensis (orange spots on the lichen)

Geastrum triplex


  1. Are you sure the moss you have marked as Funaria hygrometrica isn't Bryum capillare or similar? F.hygrometrica has setae that are curved throughout its length. The capsules are shorter and rounder too.

    1. Thank you for the feedback. It was said, that this is F. hygrometrica, but I will contact the organisators of the Field Trip and ask them. The problem is, that we were a large group, which split over the areal. Maybe, we made a mistake and there was no expert to correct it.