Apiosporina collinsii
Apiosporina collinsii (Schwein.) Höhn., Sber. Akad. Wiss. Wien, Math. -naturw. Kl., Abt. 1 119: 439 (1910).
≡ Sphaeria collinsii Schwein., Trans. Am. phil. Soc., New Series 4(2): 211 (1832) [1834].
Index Fungorum number: IF 122234; Facesoffungi number: FoF 06355, Fig. 1
Description: see Sivanesan (1984); Zhang et al. (2011).
Material considered: see Sivanesan (1984); Zhang et al. (2011).
Fig. 1 Apiosporina collinsii (collections from M., re-drawn from Fig. 55 in Schubert et al. 2003). a Conidia. b Conidiophores. c Base of conidiophore arising from superficial hyphae. Scale bar = 10 μm.
Importance and distribution
Apiosporina is the causal agent of black knot in Prunus virginiana and other Prunus species in North America (Canada, the United States). Infection by Apiosporina causes losses in the plum growing regions (Zhang et al. 2005). Apiosporina is of quarantine significance and considered as a pest of concern by EPSA (2018). Apiosporina is listed in Annex IIAI of Directive 2000/29/EC. There are six Apiosporina epithets in Index Fungorum (2022), but three species have been transferred to Basiseptospora, Lasiostemma and Pseudomassaria. Apiosporina comprises three species known on Amelanchier (Rosaceae), Ceanothus sp. (Rhamnaceae), Cotoneaster sp. (Rosaceae), Harungana (Hypericaceae), Prunus emarginata (Rosaceae) and Pyrus sp. (Rosaceae).
Barr ME – The Venturiaceae in North America. Canadian Journal of Botany 46, 799–864.
Sivanesan A. 1984 – The bitunicate ascomycetes and their anamorphs. J. Cramer, Vaduz, p 701.
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