Lambiella, Hertel

Kantvilas, Gintaras, 2022, The genus Lambiella Hertel (lichenised fungi) in Tasmania: new combinations, new species and a revised key, Phytotaxa 549 (2), pp. 209-218 : 216

Key to the Tasmanian species of Lambiella

1. Occurring on bark, wood, humus-rich soil or over bryophytes and other lichens ............................................................................. 2 Occurring directly on rock.................................................................................................................................................................. 6

2. Thallus pale blue-grey to grey, composed of rather effigurate, scattered or contiguous areoles over a conspicuous black prothallus; apothecia broadly adnate .................................................................................................................................................................... 3 Thallus whitish or pale cream and areolate-verruculose, or inapparent; prothallus lacking; apothecia basally constricted.............. 5

3. Thallus containing lobaric acid; apothecia conspicuous, 0.3−1.7 mm wide, with a markedly lobate to flexuose margin ................ 4 Thallus lacking lichen substances; apothecia roundish in outline, barely visible, at most to 0.13 mm wide ................... L. plumbea

4. Ascospores broadly ellipsoid, 6–10.5 × 4–6 µm; found on shaded, smooth bark in cool temperate rainforest ............. L. applanata Ascospores globose or almost so, 5–8 × 4.5–7.5 µm; found on soil or overgrowing terricolous lichens and bryophytes in open habitats......................................................................................................................................................................... L. globulispora

5. Thallus whitish or pale cream, areolate-verruculose, containing porphyrilic acid; apothecia typically in botryose clusters of up to 20 or more; epihymenium olive-brown, K–, C–; ascospores 7–13 × 4–6 µm; common in wet forest, especially at high elevations, growing on soft, moist bark at the bases of large trees, or on mounds of humus and peat ......................................... L. hepaticicola Thallus inapparent, lacking lichen substances; apothecia solitary, scattered; epihymenium grey, K+ violet, C+ violet; ascospores 10–15 × 7–10 µm; very rare in heathland, growing on fibrous bark.............................................................................. L. asteriphila

6. Epihymenium greyish, K+ violet, C+ violet ...................................................................................................................................... 7 Epihymenium a shade of olive or brown, never reacting violet in K and/or C.................................................................................. 8

7. Thallus olive-brown, containing gyrophoric acid (K–, C+ reddish in squash preparations), often overgrowing the thallus of Ramboldia blastidiata Kantvilas & Elix in dry sclerophyll woodland; ascospores 9.5–14 × 6–9 µm ...................... L. ramboldiana Thallus pale to dark grey or brownish grey, containing norstictic acid (forming red, needle-shaped crystals upon the addition of K to squash preparations, C–), strictly autonomous; found on exposed, montane rocks; ascospores 12–21 × 6.5–13 µm.. L. psephota

8. Thallus dull grey, containing norstictic acid (forming red, needle-shaped crystals upon the addition of K to squash preparations) 9 Thallus variously coloured, not containing norstictic acid............................................................................................................... 10

9. Occurring at lowland elevations; thallus areoles convex, contiguous and highly adnate ........................................ L. parvipsephota Occurring in exposed, alpine environments; thallus areoles concave with a paler grey, inrolled margin, dispersed over the substratum in loosely attached clumps.......................................................................................................................................... L. circumgrisea

10. Thallus olive-brown, areolate to subsquamulose, becoming plicate and pulvinate, containing confriesiic acid (all reactions negative); ascospores 7–12 × 6.5–11 µm ....................................................................................................................... L. campestris Thallus variously coloured, areolate to squamulose, never plicate or pulvinate; secondary chemistry various but never with confriesiic acid.................................................................................................................................................................................. 11

11. Thallus vivid white, containing pannarin (P+ pale orange, K+ pale yellow)............................................................ L. albotessellata Thallus a shade of dull grey or brown; chemical composition and spot tests variable but never including pannarin ..................... 12

12. Apothecia aspicilioid, lacking a proper exciple but surrounded by a thin, inrolled thalline margin; 2’- O -methylperlatolic acid present (K–)................................................................................................................................................................. L. aspicilioides Apothecia lecideine, with a thin proper exciple; thallus chemistry variable but never including 2’- O -methylperlatolic acid........ 13

13. Thallus dark blue-grey to grey, containing lobaric acid; prothallus black and prominent; apothecial disc typically plane to concave, rarely gyrose; in moist, sheltered, shaded crevices on highly siliceous, hard quartzitic rocks ...................................... L. umbratilis Thallus brownish to pale grey-brown, lacking lobaric acid but with bourgeanic acid (usually in trace amounts); prothallus not apparent; apothecial disc gyrose or umbonate; on dolerite ......................................................................................... L. coppinsiana