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34 CHAPTER 4 RESULTS 4.1 Lichen diversity Epiphytic lichens ...

34 CHAPTER 4 RESULTS 4.1 Lichen diversity Epiphytic lichens ...

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49<br />

Family MAGALOSPORACEAE<br />

MEGALOSPORA Meyen.<br />

Thallus crustose, superficial. Photobiont green algae; Dictyochloropsis,<br />

chlorococcoid. Ascocarps apothecia, sessile, rounded, biatorine, disc brown to blackbrown.<br />

Hymenium I- or I+ blue, with oil droplets. Paraphyses indistinctly septate,<br />

usually branched and anastomosing in the epithecial region. Aci Lecanora-type, with<br />

apical dome, ovoid-ellipsoid, 1-8-spored. Ascospores colourless, elongate, 1-many<br />

septate with thin septa.<br />

Megalospora sp.1<br />

Megalospora sp.2<br />

Figure <strong>4.1</strong>8 Megalospora spp., scale bar = 5 mm<br />

Family NEPHROMATACEAE<br />

NEPHROMA HELVETICUM Ach.<br />

Thallus foliose, dorsiventral, loosely attached, lobes rounded to slightly<br />

elongate. Photobiont green algae: Coccomyxa or blue-green algae; Nostoc.<br />

Upper surface smooth, matt or shining. Soredia sometimes present. Cortex<br />

pseudoparenchymatous. Medulla white or yellow. Lower surface tomentose,<br />

corticated. Ascocarps apothecia, sessile, rounded to reniform, disc pale brown to redbrown-black.<br />

Aci 8-spored. Ascospores pale brown, 3-septate.

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