building a Global Consortium of Bryophytes and Lichens as keystones of cryptobiotic communities
Lecidea plana
Lecidea plana(J. Lahm) Nyl.
Family: Lecideaceae
[Lecidea atroalba var. enteromorpha Flot., moreLecidea enteromorpha (Flot.) Vain., Lecidea enteromorpha f. ecrustacea (Nyl.) Vain., Lecidea enteromorpha f. enteromorpha (Flot.) Vain., Lecidea enteromorpha f. oxydata (Anders) Vain., Lecidea enteromorpha f. perfectior (Nyl.) Vain., Lecidea enteromorpha f. subpruinosa Räsänen, Lecidea enteromorpha f. subtumida (Vain.) Vain., Lecidella plana J. Lahm, Lecidella plana f. perfecta Arnold, Lecidella plana f. plana J. Lahm, Lecidella plana var. plana J. Lahm]
Ecology: Biotroph; lichenized; endosubstratic or episubstratic; substrate non-calciferous or metalliferous. Thallus: Areolate (primarily areolate), continuous throughout, dispersed along the periphery, continuous in the centre, or dispersed throughout and distinctly seperate; lobes angular or rounded at the front; separate thallus parts 0-1 mm thick. Thallus Size and Differentiation: Large; main branches basally not constricted. Thallus Outline: Margin concolorous the thallus centre. Upper Surface: White, lemon (citrine), brownish yellow, pale grey, or green (olivaceous), convoluted, plane or convex; not sorediate; without thalloconidia thalloconidia. Medulla: Iodine reaction in Lugol's solution negative. Ascocarps: Forming rarely on the pro- or hypothallus, soon sessile, slightly constricted or strongly constricted at the base, 25-200 per cm², .6-1.5-(2) mm in diam.. Margin: Not flexuose or slightly flexuose, persistent or excluded, 35-170 µm wide, epruinose. Disk: Plane, weakly convex, or strongly convex, black, epruinose, without an umbo. Exciple: Hyphae radiating outwards; 3-5 µm wide; grey; inspersed with crystals. Epithecium: Apical cells olive, green, or rarely black, cell pigment reacting with 10% HCl (in H2O). Hymenium: 35-59 µm high; white; iodine reaction: Lugol’s positive. Subhymenium: 30-86 µm high; white. Hypothecium: White, brownish yellow, or brown. Ascospores: Oblong, (7)-7.9-14.8-(16) µm long, (3)-3.5-5-(6.5) µm wide; wall not ornamented. Conidia: (11)-12.5-15-(17) µm long. Secondary Metabolites: Rarely not detected or present, planaic acid or 4-O-demethylplanaic acid. Spot Tests: Medulla: K –, C –, PD – ascocarp margin (in section): K –, C – disk: C – hypothecium: K – epihymenium: K –.