File:EB1911 Lichens - Xanthoria parietina.jpg

DescriptionEB1911 Lichens - Xanthoria parietina.jpg	English: Xanthoria parietina: by the fusion of the hyphae in the middle of the mycelium a pseudo-parenchymatous cortical layer has begun to form (see legend below).
Date	published 1911
Source	Encyclopædia Britannica (11th ed.), v. 16, 1911, “Lichens,” fig. 1, p. 579.
Author	After Bonnier, from v. Tavel. From Strasburger’s Lehrbuch der Botanik.
Permission (Reusing this file)	Public domainPublic domainfalsefalse This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States.

1, Germinating ascospore (sp) with branching germ-tube applied to the Cystococcus cells (a).

2, Thallus in process of formation.

sp, Two ascospores.

p, Cystococcus cells.