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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
Phyllopsora santensis (Tuck.) Swinscow & Krog

Lichenologist 13: 236 (1981)

Lecidea santensis Tuck., Amer. J. Arts Sci.,ser. 2, 25: 428 (1858).

T: Santee Canal, Berkeley Co., South Carolina, U.S.A., 1849, H.W.Ravenel 182; holo: FH-TUCK n.v.

  Thallus squamulose, effuse. Prothallus indistinct to partly well developed, white to red-brown. Squamules 0.3–1.0 mm wide, adnate to ascending, isodiametric to elongate, scattered when young, later often contiguous or imbricate, crenulate to incised, plane to weakly convex, medium green, glabrous on the upper side, usually faintly pubescent along the margins. Isidia common, laminal or marginal, globose to cylindrical, usually simple, rarely branched. Upper cortex of type 2, 15–25 μm thick. Apothecia rather common, 0.8–1.5 mm wide, rounded when young, later irregular in outline, mostly solitary, plane to moderately convex, pale to mid-brown, with an indistinct darker glabrous to slightly pubescent margin. Proper exciple pale brown, tinged red in patches. Epihymenium and hypothecium colourless. Ascospores simple, narrowly ellipsoidal to fusiform, 7–13 × 2.5–3.0 μm. Pycnidia common, partly immersed in the thallus, tan, yellow-brown or orange-brown. Conidia bacilliform, 11–14 × 1.0–1.5 μm.
CHEMISTRY: Cortex and medulla K–, C–, P+ orange; containing argopsin (major), norargopsin (minor), atranorin (minor).
  This species is rare on bark in monsoon vine forest in the N.T.; also in North and Central America and in Asia.  
  Elix (2009h)  

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

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