228 THE LIFE AND WoRK OF GEORGE DON. 
flexuosum, the _ nuts or earth chesnuts, in Scotland called by 
the name of Arn 
In the fields = the shore, in several places, is found the 
Centaurea intybacea of Willdenow’s Species Plantarum. I first 
distinguished this beautiful and rare plant some years ago: it is 
new to Britain, and must have been confounded with the Centaurea 
scabiosa, which it very much resembles, and often grows intermixed 
with. On walls about Dundee is found a variety of Poa compressa. 
On the walls of the old Tower of Dundee, is plenty of the Asplenium 
ruta-muraria, the only place where this little plant is to be found in 
plenty in Angusshire. 
Along the side of the Tay, to the westward of Dundee, may be 
seen the Sagina maritima, Allium viniale, Triglochin maritimum, 
Aster tripolium, Poa maritima, and a new species, which I propose 
to call Poa depauperata, from its starved-like appearance. There 
likewise grows on the banks of the Tay an uncommon species of 
Aira, which may perhaps prove to be a non-descript. In the 
woods, Paris quadrifolia occurs; and on rocks we find Asplenium 
septentrionale. Saxifraga nivalis grows on the higher hills, and 
should have been formerly mentioned. 
The larger plants contained in this List are to be seen in a 
growing state in my Botanic Garden at Forfar, where I have now 
the most extensive collection of hardy plants in Scotland. 
Sea PRODUCTIONS. 
The first to be noticed is the genus Fucus, not only on account 
of the great number of species, but because they are the most con- 
spicuous marine plants, and those generally understood by the 
term Sea-weeds. The following is a list of such as I have observed 
in the course of my botanical excursions along the shore: 
Fucus sinuosus Fucus alatus 
»  Sanguineus 3 entatus’ 
»  ruscifolius , laceratus 
5» _membranifolius »  laciniatus 
»  Ovalis »  Ciliatus 
s ew » _ bifidus 
»  ligulatu és palmate? the dulse 
me eceleitar: hen-ware of this country 
of a shire » edulis 
yo STE »  phyllitis 
~ vesiesiisads and var. »  saccharinus 
spiralis »  digitatus 
»  cerinoides »,  bulbosus 
