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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
Letrouitia vulpina (Tuck.) Hafellner & Bellem.

Nova Hedwigia 35: 281 (1982)

Lecidea vulpina Tuck., in W.Nylander, Ann. Sci. Nat., Bot.,sér. 4, 19: 354 (1863).

T: Cuba, C.Wright, Lich. Cub. 233; lecto: FH n.v., fide J.Hafellner, Nova Hedwigia 35: 714 (1983); isolecto: G, GZU, L, MICH, PC, UPS, US n.v., M.

  Thallus greenish to yellow-brown or pale orange, ±smooth to cracked; soredia and isidia absent. Apothecia common and scattered, rounded to somewhat distorted, sessile, constricted at the base, 0.5–1.5 mm wide; disc red-orange to orange or rusty brown, ±plane, smooth; margin raised above the disc, yellow-orange to reddish orange, rather thin and inflexed, often somewhat paler than the disc, K+ purple; proper exciple consisting of hyaline radiating agglutinated hyphae; outer layer encrusted with orange anthraquinone crystals, colourless within. Epihymenium encrusted with red-brown anthraquinone crystals, K+ purple. Hymenium not inspersed, colourless, 80–110 μm thick; hypothecium colourless to yellow or pale brown. Asci usually 2-spored, rarely 3-spored, 60–75 × 15–25 μm. Ascospores broadly ellipsoidal, densely muriform, 24–40 × 15–20 μm. Conidia not seen.
CHEMISTRY: Thallus and apothecia K+ purple; thallus containing dioxodidymic acid and 8-chlorodioxodidymic acid (major), dioxocondidymic acid and 8-chlorodioxocondidymic acid (major), letrouitic acid (major), oxodidymic acid and 8-chlorooxodidymic acid (major); apothecia containing additional fragilin (minor) and parietin (minor).
  Known from the N.T. and north-eastern Qld; grows on the bark of various trees in rainforest and coastal forest. Also in Asia, Africa, North, Central and South America, Papua New Guinea, Vanuatu, New Caledonia and Tonga.  
  Elix (2009k)  

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

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