M arcliantiacece 
183 
a xerophyte. Besides, there can be little doubt that the spores of 
many of the Marchantiales are dispersed by water rather than by 
air-currents. In this connexion, some interesting observations are 
made in a recent paper by Yeates (70), with reference to the 
distribution and dispersal of some British representatives of the 
Marchantiales and thalloid Jungermanniales ; though it must be 
remembered that these groups are very poorly represented in 
Britain, and hence conclusions drawn from the scanty Hepatic flora 
of this country can hardly be applied to the liverworts as a whole. 
Still, Campbell notes the apparently complete absence of Hepaticae 
from the new flora of Krakatau, as an indication that the spores of 
these plants are not generally well adapted for wind dispersal. 
LITERATURE. 
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Bot. Gazette, vol. 28, 1899, p. 110. 
2. Andreas, J. “ Ueber den Bau der Wand und die Oeffnungsweise des 
Lebermoossporogons.” Flora, vol. 86 , 1899, 58 pp. 
3. Barnes, C. R., and Land, J. G. “ Bryological Papers. I.—The Origin 
of Air Chambers.” Bot. Gazette, vol. 44,1907, p. 197. 
4. Barnes, C. R., and Land, J. G. “ Brj-ological Papers. II.—The Origin 
of the Cupule of Marchantia.” Bot. Gazette, vol. 46, 
1908, p. 401. 
5. Beauverie, J. “ Etude d’une Hepatique thalle habite par un champignon 
filamenteux.” Comptes rendus, 1902, p. 616. 
6 . Blakeslee, A. F. “ Sexual Condition in Fegatella." Bot. Gazette, vol. 46, 
1908, p. 384. 
7. Bolleter, E. “ Fegatella conica, eine morphologisch-physiologische Mono¬ 
graphic.” Beihefte zum Bot. Centralblatt, vol. 18, 
1905, p. 327. 
8 . Campbell, D. H. “ Structure and Development of the Mosses and Ferns.” 
2nd ed., 1905. 
9 . M “ On the Distribution of the Hepaticse, and its Signifi¬ 
cance.” New Phytologist, vol. 6 , 1907, p. 203. 
10. Cavers, F. “ Explosive Discharge of Antherozoids in Fegatella conica." 
Annals of Botany, vol. 17, 1903, p. 270. 
U, “On Saprophytism and Mycorhiza in Hepaticae.” New 
Phytologist, vol. 2, 1903. 
