Cercospora Vitis (Cladosporium viticolum), which has club-shaped spores of a green-brown colour, also attacks the leaves; but, unless the season is extremely unfavourable, it does little harm.
I, Each such body has a basal hollow portion (en) sur mounted by a glandular cushion (kl), from the centre of which projects a small, solid; club-shaped process or tentacle (t').
The antennae are usually elbowed, and often end in a club-shaped swelling.
The spores differ from those of ferns in their outer coat (exospore) being split up into four club-shaped hygroscopic threads (elaters) which are curled when moist, but become straightened when dry.
Gerbillus (or Tatera), with a large number of species, has a range coextensive with that of the sub-family; Pachyuromys, with two African species, has a short club-shaped tail and enormous auditory bullae; while the remaining members of the group, which are confined to North Africa, Eastern Europe and Asia, are arranged in the genera Meriones, Psainmomys and Rhombomys, the latter represented only by R.