Department of the Environment and Water Resources home page

About us | Contact us | Publications | What's new

Header imagesHeader imagesHeader images

Australian Biological Resources Study

Checklist of the Lichens of Australia and its Island Territories
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References
Thelotrema rugatulum Nyl.

Bull. Soc. Linn. Normandie, sér. 2, 7: 168 (1873)

T: Andaman Islands, 1867, S.Kurz 57; lecto: H-NYL 22495, fide M.E.Hale (in herb., 1972).

Tremotylium australiense Müll.Arg., Flora 65: 500 (1882); Phanotylium australiense (Müll.Arg.) Clem., Gen. Fungi 81 (1909). T: Toowoomba, Qld, C.H.Hartmann s.n.; holo: G.

Tremotylium nitidulum Müll.Arg., Hedwigia 32: 132 (1893). T: Brisbane, Qld, 1891, F.M.Bailey 367; holo: G.


  Thallus endophloeodal to epiphloeodal, to c. 200 µm thick, pale yellowish grey to pale greyish green, dull to slightly glossy, usually smooth, occasionally becoming partly eroded, then uneven to porous, rarely continuous, usually rugose and verrucose, ±rimose to areolate. Protocortex ±discontinuous, to 25 µm thick, occasionally becoming conglutinated and forming a true cortex of periclinal hyphae. Algal layer usually well developed, continuous or discontinuous; calcium oxalate crystals abundant, small to large, clustered. Vegetative propagules not seen. Ascomata conspicuous or not, to c. 1 mm diam., ±rounded, perithecioid to apothecioid, erumpent to sessile, solitary to rarely marginally slightly fused, immersed, rarely emergent, usually verrucose-hemispherical, rarely urceolate. Disc not visible from above, rarely becoming partly visible, greyish, pruinose. Pores variable, small to gaping, to c. 0.3 (–0.8) mm diam., ±rounded to irregular, the proper exciple apically to completely visible from above, usually free only in the upper parts, off-white, often somewhat shrunken, usually entire to slightly split, in apothecioid ascomata split, occasionally layered, incurved. Thalline rim margin ±rounded, small to gaping, entire to slightly split, sometimes eroded, thin to thick, incurved, concolorous with the thallus. Proper exciple apically free, rarely completely free, thin to thick, with a thick hyaline part internally, pale yellowish to yellowish brown marginally, apically sometimes covered with greyish to dark grey granules, occasionally amyloid. Hymenium to c. 250 µm thick, not inspersed, moderately conglutinated; paraphyses parallel or slightly interwoven, unbranched, the tips slightly thickened; lateral paraphyses often inconspicuous, to c. 25 µm long; columellar structures absent. Epihymenium hyaline and without granules, occasionally thin with small greyish granules and small crystals. Asci 1 (–2)-spored; tholus initially thin to thick, not visible at maturity. Ascospores muriform, cylindrical to oblong-ellipsoidal or broadly fusiform, with ±rounded to narrowly rounded ends, hyaline, occasionally pale yellowish when old or decayed, faintly to rarely strongly amyloid, 80–220 × 15–45 µm, with numerous locules; locules ±rounded to angular, subglobular to irregular; transverse septa thin, distinct, usually regular; ascospore wall and endospore thin; wall often with a thin to thick halo. Pycnidia not seen.
CHEMISTRY: Thallus K–, C–, P–; no secondary compounds detectable by TLC.
  Corticolous in eastern Qld and N.S.W., usually inrainforest, at altitudes to 900 m, rarely in mangroves; also in the Andaman Islands.  
  Mangold et al. (2009)  

Checklist Index
Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References

This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced by any process without prior written permission from Australian Biological Resources Study. Requests and inquiries concerning reproduction and rights should be addressed in the first instance to Dr P. McCarthy. These pages may not be displayed on, or downloaded to, any other server without the express permission of ABRS.

Top | About us | Advanced search | Contact us | Information services | Publications | Site index | What's new