Botryotinia globosa
Botryotinia globosa N. F. Buchw.
Sclerotiniaceae
Conservation status. Endangered [EN B2ab(ii,iv)].
Morphology and biology. Fruit-bodies (apothecia) arising single or couple from black lenticular sclerotium 2–15 × 1–3 mm in size; disc 1–2.5 mm in diameter, deeply cup-shaped, pale brown on a slender, smooth stalk up to 8 mm long; flesh consist of slender, interwoven, thin-walled hyphae, 6–12 µm wide. Spores ellipsoid, 18–27 × 9–11 µm, asymmetrical, unicellular, hyaline. Anamorph: Botrytis globosa Raabe, with globose conidia, 12–18 µm in diameter. IV–VII.
Habitats and populations. Anamorph parasitizes on living leaves of Bear onion (Allium ursinum), which grows in wet and shady places in forests and bushes over alt 1000 m.
Distribution in Bulgaria. Rila Mts (along Chairska River).
General distribution. Cosmopolitan.
Threats. Habitat changes as result of livestock, wood, tourism, fires.
Conservation measures taken. Included in the Red List of Fungi in Bulgaria. The locality is situated on the territory of the Rila National Park and in a site of the European ecological network Natura 2000 in Bulgaria.
Conservation measures needed. Research into the species biology and ecology; inclusion in the National biodiversity monitoring system; preservation of the locality of the species.
References. Hinkova 1960; Gyosheva et al. 2006.
Author: Evtimiya Dimitrova
