346 EXTRACTS AND NOTICES. 
Lapponum, witonag a single rather large plant, growing in a 
osition near one of the beaten tracts; was it planted ? 
tolerable abundance. Chara canescens (fide Groves), Little Sea, 
Studland, Dorset, 1879.—Boxtron Kine. 
Extracts and Notices of Books and HMemotrs. 
EXTRACTS Pike, THE REPORT FOR 1880 OF THE BOTANICAL 
HANGE CLUB OF THE BRITISH ISLES. 
[Eprrep py Mr. James Grovus]. 
(Coneluded from p. 317.) 
P. heterophyllus, Schreb., form ies broad-based submerged 
leaves. Kirbister Loch, Orkney, July, 1875.—J. T. Bosw 
P. pectinatus, L., genuinus.— Loch of Rirkister, Orphir, Orkney, 
August, 1880.—J. T. Boswell. 
P. filiformis, Nolte—Mud at bottom of brackish water near 
“ ee of Brogar, Loch of Harray, Orkney, 24th September, 
—H. Halcro Johnston 
F Dacbatlce polycarpa, Nolte, var. tenuissima, cea ——Kirbister 
Loch, Orphir, Orkney, August, spe gS 
Ruppia rostellata, Koch, var a, Bos w.——In Oyee of Firth, 
Orkney, August, 1880. Stem | PRR aeholls buried in the mud, 
which is shi by the sea Se. high water. Peduncles very short, 
curving downwards, so as to bury the fruit in the silt ; stalks of 
the nuts heal shorter than i in the ordinary form of R. rostellata, 
but many times longer than the nuts; nuts very oblique and 
rostrate, as in R. rostellata; leaves setaceous; sheaths not swollen. 
This plant is much like No. 205 of Balansa’s ‘ Plantes d’ Algérie,’ 
1852, named R. maritima, var. acaulis, J. Gay, from ‘ Bords de la 
ep 
The Orkney plant has some resemblance to R. brachypus, Gay, but 
has shorter stems, narrower sheaths, and much longer stalks to 
bo _ which are less swollen and distinetly rostrate.—John T. 
we 
Zostera angustifolia, Reich.—Oyce of Firth, Orkney, August 
and — 1880.—J. T. Boswell and H. Halero Johnston. 
seudacorus, L..—_Swampy meadow, Kelvedon, Essex, June, 
1880.~E. G. Varenne. This appe — to me to be the I. pseudo- 
Boreau, Flore du Centre, 8me éd., tome u., 5. 
“Botanical Exchang e ‘Club Report, : 3878, p. 19. L. acoriformis, 
Bor., the more widely distributed and common form, is readily (as 
far as my experience goes) distinguished by the different colour 
