17 
KANTIA SUBMERSA IN BRITAIN. 
By Atsert Wiutson, F.L.S., anp J. A. Wuextpon, F.L.S. 
In June, 1900, we collected a fine hepatic on Cockerham Moss, 
West Lancashire, which was for a time laid aside as a 
Kantia trichomanis. We submitted a sai of our forms of Kantia 
recently to Mr. Macvicar, with a view to the separation of K. 
Sprengelii (which was found to be of frequent occurrence with us), 
and he suggested that the Cockerham Moss plant might possibly 
prove to be Kantia submersa Arne After examining a further 
supply, Mr. Maevicar was convinced that our plant should be referred 
to that species; but as material for comparison was not available, 
and the species had not been recorded as British, he suc reei 
that we should refer it to Herr H. W. Arnell, of Upsala, for con- 
mat i 
That authority on the genus kindly informs us that the plant is 
te paaT Kantia submersa Arnell, and that our o secagsios are specially 
interesting on account of the presence of gonidia-bearing sureuli, 
which had not been observed on the species previously. Kantia 
submersa was first found by Dr. O. Novdateds in Lake eb rig 
Sandhem, in the province of Vestergétland, Sweden, and its de- 
scription by Herr H. W. Arnell (in Rev. Bryologique, 1902, p. 80), 
to which we have added that of the gonidia, is as follows :— 
‘* Sterilis, submersa, foliata 2-3 mm. lata, inferne obscure viri- 
dis, superne juvenilis ee luteo- viridis. Caulis simplex vel hie illic 
amum emittens, 4-5 cm. longus, fragilis, viridis, Meow ga nigres- 
cens, oellulis ccckueanbud circiter 20, elongate rec angularibus, ex 
axillis amphigastriorum ae inas paucas et ‘breves Tateaee Folia 
applanate disticha, sat remota, qualia, longitudinaliter affixa, 
plana vel in apice parum datlexs, e basi lata et inferne decurrente 
paullulum oblique ovata, in apice integra sed obtusissime acuminata ; 
llule basilares majores 0-045-0-065 mm. longe, 0:03 mm. later, 
elongate hexagonales, _— minores 0°03-0°35 mm. ee e 
late, Hex andinos: quadrate, membranis tenuibus, ad angulos no 
incrassatis, granulis elceophylliferis uniseriatis in circuitu callie 
sitis, media parte luminis hyalina. se stria modo in innova- 
a] 
Cetets ignot 
Hab. Syeden (Nordstedt). Denmark (Jensen). England, 
West Lancashire. 
With us Kantia submersa grows immersed in pools in the wettest 
parts of sphagnum bogs, and forms large intricate patches of a light 
— green above, becoming dark lurid-green below. The 
tems are elongate, e, with neatly bifarious leaves remaining of 
Journan or Botany. Vou. 41. [Jan. 1908.] c 
