72 LONDON BOTANICAL EXCHANGE CLUB. 
Air a uliginosa, Weihe. This seems to have been gathered long ago 
by Mr. G. Don in the neighbourhood of Forfar, and by Mr. G. Jack- 
son at the Loch of Drum, in Aberdeenshire, and should be looked for 
again on swampy moors 
/ 
it is united by Fries and Andersson ; but it has been regarded as dis- 
tinct by Koch and many other French and German authors. The 
characters principally relied upon to distinguish it are its more consi- 
derable ligule (oblong-acute in shape, in contradistinction to the very 
/ 
/ 
as long as itself. (See 'Journal of Botany,' vol. iv. p. 177.) 
Lastrea dilatata, Presl., var. lepidota. This Lastrea, found near 
Aberdeen, and first brought into notice by Mr. Moore, is a well-marked 
form of the spinulosa series,with characters as follows: — Stem 4-6 inches 
long, densely clothed throughout with adpressed, spreading, or even 
recurved scales, w T hich are very unequal in size, the small ones lanceo- 
late, the largest ovate, 4^-6 lines long, 3 lines broad, nearly uniform 
in colour throughout. Frond not more that a foot long after it has 
been cultivated, 6-8 inches broad, ovate-deltoid in general outline, 
quadripinnatifid, the low r er pinnae decidedly the largest, and the pin- 
nules of the lower side larger than those of the upper one, these latter 
lanceolate-deltoid, the lowest in large specimens 2 inches long by half 
as broad, cut down to the rhachis into stalked lanceolate segments, 
with distinct toothed or pinnatifid lobes. Colour dark green, the 
rhachis chesnut-brown on exposure ; both the main one and those of 
the pinnae considerably chaffy, the under surface slightly glandular, 
and the involucre a little gland-ciliated. From the typical plant this 
recedes considerably in the cutting and outline of the frond, being much 
more divided, with the lower pinnae, as in L. amula, conspicuously and 
uniformly the largest. This character, and the density and uniformity 
in colour of the scales, another point in which it resembles L. amulet, it 
retains in the root, which has been grown at Kew for several years. 
The following species have been noticed in Middlesex by Dr. 
Trimen ; they are additions to the flora of the North Thames sub- 
province of the * Cybele Britannica:' 
Sagina ciliata, Fr. 
Vicia lathyroides, L. 
Epilobium obscurum, Schreb. 
Epilobium tetragonum, L. 
Lepidium Smithii, Hook. 
Galium elongatum, Presl. 
Hieracium murorum, L. 
Triticum caninum, uds. 
