BY REV. F. R. M. WILSON. ISf^ 



The family of Lichenac^, or lichens properly so called, 

 includes all the other species, and is divided into six series. 



The Epiconiodei, or dusty fruited series (Greek epi, upon, 

 conia, dust) are readily distinguished from all the other 

 families by the pulverulent sjDores on the surface of the 

 apothecium. 



The Cladodei, or shoot-like series (Greek dados, a shoot) 

 have peculiarly fungoid apothecia growing mostly on the 

 summit ot podetia, or stems rising from a foliaceous thallus. 



The Eamalodei, or branch-like series CLatin ramale, a 

 branch) have apothecia with a thalline margin, which grow 

 on a generally pendulous thallus. 



The Phtllodei, or leaf-like series (Greek phy lion, a leaf) 

 have their thallus depressed to the substratum, and lobed. 



The Placodei, or plate-like series (Greek plax, sl plate) 

 have a crustaceous thallus, 



The Pyeenodei, or nut-like series (Greek pyren, a nut) are 

 marked by the fructification being in closed receptacles. 



5. Tasmanian Lichenology. — The lichens of Tasmania 

 have had more attention paid to them than those of Australia. 

 As far back as 1802, Mr. Robert Brown, who accompanied 

 Minders on his voyage round Australia, collected and named 

 a number of lichens, which have been examined in the light 

 of more modern knowledge and re-named by Rev. Mr. 

 Crombie in a paper given to the Linnasan Society of Londou 

 (Journ. Linn. Soc.,vol. 17 pp. 390-401). Of these 50 are from 

 Tasmania. 



In 1839-1843, Mr. Joseph D. Hooker accompanied Sir 

 James Clark Ross in a voyage of discovery to the Antarctic 

 regions, in Her Majesty's ships the Erehiis and Terror. Mr. 

 Hooker was assistant surgeon of the Erebus and naturalist of 

 the expedition. Among other places visited was Tasmania. 

 There they found several zealous botanists, who had beea 

 inspired by a Mr. Robert Lawrence, and who assisted Hooker 

 in making a botanical collection in the island. On returning 

 to England, Hooker drew up and published in 1847, under 

 authority of the Lord Commissioners of the Admiralty, au 

 account of the botany of the voyage. The third and fourth 

 volumes contain the Flora Tasmanise, in which Rev. J. C. 

 Babington and Mr. Mitten describe the lichens, Mr. Mitten 

 undertaking the crustaceous kinds. They enumerate 92 in 

 all, two of them being described as new. The names of the 

 collectors are given : Hooker, Lawrence, Ivonald C. Gunn, 

 Charles Stuart, employed by Mr. Gunn, William Archer, of 

 Cheshunt, Dr. MiUigan, of Hobarton, Dr. Scott, and A. Old- 

 field. After Hooker's return to England the lichens sent to 

 him were submitted to Mr. Thomas Taylor, and his determina- 

 tions were published in the London Journal of Botany, 184dw 

 1847. 



