CARMARTHENSHIRE PLANTS 83 
but does not displace all the air which has entered during 
exposure, the result being that the alga becomes buoyant. At 
Vannes, where Col ia is found growing on the oyster-beds, 
the “ Ballons” frequently bring with them to the surface the 
young ei o* which they are attached; large numbers of these 
are thereby 
n sus om general appearance oR sinuosa resembles 
Leathesia difformis Aresch. ( = L. tuberiformis 8. F. Gray), with 
which it has often been confused. It may be seer rae from 
that plant by the thinner, wei eee Rear and by the struc- 
ture, which is cellular and not filamentous. Leathesia also is 
usually lobed, even when quite cores said possesses a resiliency 
which is cco in Col 
sons rece which ‘Colpomenia may be found are not 
accurately know It may occur more or less throughout the 
entire year, but reutlatiiiia is in full growth, at all events on the 
French coast, during March and April. The plant occurs as an 
epiphyte, usually immediately above the level of.low water, and is 
frequently found washed ashore. 
The writer would be glad to learn of any fresh localities in 
which the alga may be detected, and would suggest to those who 
possess dried collections the possibility of Colpomenia having been 
put away as Leathesia. 
CARMARTHENSHIRE PLANTS. 
By Artuur BENNETT. 
Tus list of species for Carmarthenshire, yeaa es to those 
sneescet } in Topographical Botany, “i a 1883, has been drawn up 
ainly to record a series of specim sent ee ie (dee 
Knight, of Llandovery, during the sabiliontiias of the Supplement 
in this Journal in 1905, but too late for inclusion therein. 
It is evident from recent records that Wales has a much richer 
— than was formerly supposed; while pani . the care 
resent problems not easy to solve. Among s are 
and i | 
the French (normal), Spanish (D. Dedeana Boiss.), Italian o. Ber- 
toloniz Nyman), or % Sonne rman (D. Beckeri Kern.), forms considered 
y on. 
inabe Botanists’ Guide (1805) fifteen species of plants only 
rded for Carmarthen; these are si sisaply soiabed. shSae 
Botanists’ Guide (1835), and no additions are made in sae 
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