A homothallic species of Nectria producing a
Cylindrocladium-like anamorph was collected from bark of a fallen
tree in the
Amazonian forest in Ecuador. The anamorph, which is placed in a new genus,
Xenocylindrocladium, is characterized by forming
straight, cylindrical, 1-septate conidia borne on penicillate conidiophores
with coiled, avesiculate stipe extensions. The teleomorph,
which is best accommodated in Nectria, is distinct in forming
yellow-orange perithecia with red ostiolar regions, ellipsoidal, smooth,
hyaline, 1-septate ascospores, and long-stalked, cylindrical asci with
apical discharge mechanisms. Both the teleomorph and anamorph
states are newly described as Nectria serpens and
Xenocylindrocladium serpens.