Graminella bulbosa Leger & Gauthier, 1937 ex Manier, 1962.

Valle, Laia Guardia & Stoianova, Desislava, 2020, First record of Harpellales, Orphellales (Kickxellomycotina) and Amoebidiales (Mesomycetozoea) from Bulgaria, including a new species of Glotzia, MycoKeys 67, pp. 55-80 : 55

publication ID

https://dx.doi.org/10.3897/mycokeys.67.52055

persistent identifier

https://treatment.plazi.org/id/78D22DC9-A2A8-5535-A187-40E3A3D5CD0E

treatment provided by

MycoKeys by Pensoft

scientific name

Graminella bulbosa Leger & Gauthier, 1937 ex Manier, 1962.
status

 

Graminella bulbosa Leger & Gauthier, 1937 ex Manier, 1962. Figs 11-13 View Figures 11–16

Specimens examined.

Site 2: slide BUL-2-5; Site 8: slides BUL-8-1, BUL-8-2.

Notes.

This species is characterised by the unusual formation of vegetative propagules from the bulbous basal cells (Fig. 12 View Figures 11–16 ), a feature only shared with the related genus Gauthieromyces ( Lichtwardt 1983). Graminella bulbosa was described from France ( Léger and Gauthier 1937; Manier 1962). The species is also known from Spain ( Valle 2007), Portugal ( Valle 2013a) and Italy ( Valle et al. 2013). Graminella bulbosa has been reported associated with various species of Baetis and related genera, very frequently within the hindgut of B. rhodani (Pictet). This species of mayfly is common and widespread in Europe and it also hosted Bulgarian specimens of G. bulbosa in the surveyed rivers, together with B. alpinus (Pictet). In fact, the genus Baetis bears different Harpellid species, including the more common Legeriomyces ramosus , occasionally sharing the same gut lumen with Graminella bulbosa . Bulgarian specimens of G. bulbosa show the typical small and numerous trichospores (Fig. 13 View Figures 11–16 ), measuring 8 -11 × 2 µm in our collections. These measurements are midway between G. bulbosa and G. microsporus (see discussion for further information). Unfortunately, only immature zygospores were observed (Fig. 11 View Figures 11–16 arrowhead).