Stigmatomyces limosinae Thaxt.

THALLUS yellowish, (225-) 350-600 µm long.




RECEPTACLE consists of three cells; cell I (rscI) 45-85 µm long, with a dark-coloured foot (f); cell II (rscII) as long as cell I or shorter, sometimes even isodiametric; cell III (rscIII) elongate, not tapering towards the base.

APPENDAGE (app) (40-)60-105 µm long, slightly arcuate, with its axis consisting of (7-)10-16 fertile cells. The cells are flattened, positioned obliquely, and have convex outer walls; the basal cell is darkened.


ANTHERIDIA slender, with rather long necks directed towards the perithecium.

PERITHECIUM (p) (130-)160-275 µm long; its venter is slightly inflated and darker than the other part of the thallus; the neck (np) is cylindrical, 2-3 times longer than the venter; the apex is slightly narrowed towards and rounded at the tip or has an indistinct small teeth.

Stalk cell of perithecium (scp) comprises two cells; cell I (scpI) elongate, as long as cell III of the receptacle stalk; cell II (scpII) usually of the same size and shape; together with two elongate basal cells, the stalk is frequently much longer than the appendage.

SPORES (s) hyaline, ca. 25 x 2.5 µm.



HOST AND DISTRIBUTION. The host of the specimens of S. limosinae presented here was a Rachispoda sp. (Sphaeroceridae).

Stigmatomyces limosinae has been reported from USA, Jamaica, and Mexico (Majewski 1994). Poland is the only European country in which the fungus has been revealed to date (Majewski 1994).

NOTES. According to Majewski (1994), S. limosinae is a very variable species, especially in length of its receptacle, perithecium stalk, and neck. Additionally, the perithecial apex of the fungus also vary.


Majewski T. 1994. The Laboulbeniales of Poland. Polish Bot. Stud. 7, 3-466.