HISTORICAL ] 
Srr WILLIAM JACKSON HOOKER (1785-1855). A new 
era in the study of Hepatice was inaugurated when the 
British Jungermannie was published in 1812-16—the 
date of each part is given by A. Gepp in Journal of 
Botany, 1906, p. 177. His Flora Scotica was published 
in 1821. I gather that Hooker added the following to 
our flora:—Metzgeria pubescens, Haplozia sphwrocarpa 
var. lurida, Anastrepta orcadensis, Leptocyphus Taylori, 
Cephaloziella byssacea?, Bazzania trilobata, B. triangu- 
luris, Plewroclada albescens, Blepharostoma trichophyllum, 
Scapania umbrosa, Madotheca levigata, and Cololejewnea 
calcared. 
Robert KAYE GREVILLE (1794-1866) published his 
Flora Edinensis in 1824. In this work the only hepatic 
not mentioned in Hooker’s Flora Scotica is Haplozia 
crenulata var. gracillima. He added to the flora of 
Scotland, besides this variety, Riccia fluitans, Reboulia 
hemispherica, Metzgeria conjugata, M. hamata, Gymno- 
mitriwm corallioides, Jamesoniella Carrington, Lophozia 
eylindracea, Sphenolobus saxicolus, Cephalozia lunule- 
Folia, Mastigophora Woodsvi, Seapania cwrta, Marchesinia 
Mackau, Frullania microphylla, and F. germana. 
Davin Don (1799-1841) appears to have added Odonto- 
schisma Sphagni. 
GEORGE A. WALKER-ARNOTT (1799-1866), Professor of 
Botany, Glasgow, does not seem to have made any addi- 
tions to our flora, but I have not had the opportunity of 
examining his herbarium. 
WILLIAM WILSON (1799-1871), the author of Bryologica 
Britannica, 1855, appears to have added Plagiochila 
tridenticulata. 
JOHN Hurron Batrour (1808-84), Professor of Botany, 
Edinburgh, who made numerous botanical expeditions over 
the greater part of Scotland, did not, unfortunately for our 
subject, make a special study of Hepatice. Hence his 
only addition to our list appears to be Anthelia 
Juratzkana, He included a short list of hepaties in Trans. 
Bot. Soc. Ed., vol. i., in a catalogue of plants gathered in 
the Outer Hebrides in 1841. 
ALEXANDER CROALL (1809-85) collected in many parts 
of Scotland. His additions to the flora are:—Riccia Les- 
