E-Flora BC: Electronic Atlas of the Flora of British Columbia

Summary:
Monilinia demissa produces sclerotia in mummified overwintered fruits. Fruiting bodies are cup-shaped, later flat, and the stem is long. Conidia (Monilia) are produced on living leaves, twigs and fruits of the common choke cherry. The conidia are in unbranched chains, ovoid to spherical, colorless, cream colored in mass, simple, and 7-14 x 3-9 microns.

Monilinia demissa was originally described from WA (Seaver). There is a collection from BC at the Pacific Forestry Centre.

Upper surface:
at first cup-shaped, later flat

Stem:
1-3.5cm, "long-stipitate"

Microscopic:
spores 9-15 x 5-6 microns, elliptic, one end narrower than the other, uniseriate, colorless; asci 8-spored, reaching a length of 150-160 microns and diameter of 7 microns; paraphyses slender