Berkeley’s “Introduction,” p. 341, fig. 76.
“Annals and Magazine of Natural History,” April, 1849.
In “Gardener’s Chronicle” for 1873, p. 1341.
“Grevillea,” vol ii. p. 147, in note.
W. Archer, in “Quart. Journ. Micr. Sci.” vol. xiii. p. 217; vol. xiv. p. 115. Translation of Schwendener’s “Nature of the Gonidia of Lichens,” in same journal, vol. xiii. p. 235.