Calyptra cordobensis
Calyptra cordobensis (Speg.) Theiss. & Syd., Annls mycol. 15(6): 478 (1918) [1917].
≡ Asterina cordobensis Speg., Anal. Soc. cient. argent. 10(1): 13 (1880).
Index Fungorum number: IF 165228; Facesoffungi number: FoF 12150, Fig. 1
Description:
Parasitic on dead leaves. Sexual morph: Ascomata 45–70 μm diam., 55–60 μm high, superficial, solitary, some in group, scattered, globose to sub globose, dark brown to black, mycelium appressed towards the base. Peridium 10–20 μm, composed of several layers of textura angularis. Hamathecium 2.5–3.5 μm comprising cellular pseudoparaphyses. Asci 19−21 × 12−16 µm (x̄ = 21.0 × 13.9 µm, n = 10), 8-spored, bitunicate, fissitunicate, subclavate-oblong, to clavate-subpyriforme, apex thickened, ocular chamber indistinct. Ascospores 10.5−11.5 × 3.0−4.6 µm (x̄ = 11.3 × 3.5 µm, n = 10), 2–3-seriate, narrowly obovoid to clavate, uniseptate, not constricted at the septum, upper cell wider, hyaline, guttulate, smooth-walled. Asexual morph: Unknown.
Material examined: The United States, Puerto Rico, On leaves of Eupatorium resinnifluum (Pittosporaceae), 19 July 1915, FL Stevens (ILL00086708).
Fig. 1 Calyptra cordobensis (ILL00086708). a–d Herbarium material and appearance of ascomata on the host surface. e Section through ascomata. f Peridium. g Cellular pseudoparaphyses. h–l Asci. m–q Ascospores. Scale bars: c = 5000 μm, d = 1000 μm, e, h–j = 20 μm, f, k, l = 10 μm, g, m–q = 5 μm.
Importance and distribution
Calyptra comprises eight species known from living leaves of Asclepias cornuti (Apocynaceae), Heterothalamus brunioides (Asteraceae), Plumeria tricolor (Apocynaceae), Vitis caribaea (Vitaceae), in soil and from river. Calyptra is reported from Asia (Iraq), Central America (Costa Rica), Europe (Germany, Spain), South America (Brazil) and the United States (Hawaii, Iowa, North Carolina).
Reference
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