THE GENUS RHOPALOSTROMA

Images of R luzonense (C. G. Lloyd) D. Hawksworth are given on the left. Information on the genus can be found below.
* Hawksworth, D. L. 1977. Rhopalostroma, a new genus in the Xylariaceae s.l. Kew Bull. 31: 421-431.
* Hawksworth, D. L., and A. J. S. Whalley. 1985. A new species of Rhopalostroma with a Nodulisporium state from Thailand. Trans. Brit. Mycol. Soc. 84: 560-562.

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: present or absent
stromatal conidium-bearing discs: absent
stromatal bases: stipitate or, if sessile, conspicuously constricted
stromatal aggregation: not forming a crust
stromatal shapes: other than wiry
coremial pegs or remnants: absent
subiculum: absent
substrates: associated with substrates other than dung or insect nests
ascomatal number per stroma: mostly multiperitheciate
ascomatal ostioles: present
ascomatal configurations: not valsoid
ascomatal orientation: mostly oriented vertically
ascal apical rings: absent
ascus height vs width: unknown
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: Nodulisporium-like
cultural gross morphology on oatmeal agar: not highly furrowed or distorted