THE GENUS ROSELLINIA

Images of R. corticium (Schwein.: Fr.) Sacc. and R. lamprostoma Syd. & P. Syd. are given on the left. More information can be found below.
* Petrini, L. E. 1992. Rosellinia species of the temperate zones. Sydowia 44: 169-281.

This genus has the following characteristics:

stromatal tissue quantity: distributed above, around, and beneath perithecia
stromatal layers: unipartite
stromatal surface level: erumpent or superficial
stromatal interior: essentially homogeneous
stromatal orange granules surrounding perithecia: absent
stromatal KOH pigments: absent
stromatal conidium-bearing discs: absent
stromatal bases: sessile and attached to substrate entirely
stromatal aggregation: not forming a crust
stromatal shapes: other than wiry
coremial pegs or remnants: absent
subiculum: present
substrates: associated with substrates other than dung or insect nests
ascomatal number per stroma: mostly uniperitheciate
ascomatal ostioles: present
ascomatal configurations: not valsoid
ascomatal orientation: mostly oriented vertically
ascal apical rings: present
ascus height vs width: usually higher than wide
ascospore cell number: one-celled
ascospore shapes: other than cuboid
ascospore color: colored
ascospore ornamentation: smooth
ascospore germination site morphology: slit-like
perispore dehiscence: indehiscent
anamorphs: Geniculosporium-like
cultural gross morphology on oatmeal agar: not highly furrowed or distorted