BOTANICAL SOCIETY OF LONDON. 
39 
satisfactorily determined, from its blunt and entire segments 
and marginal sori ; though from its fondness for alpine situ- 
ations, I was almost inclined to doubt the identity of the 
specimens sent with the plant in question. 
The following are the four species forwarded : — 
Aspidium Oreopteris , 
spimdosum, 
dilatation, 
Blechnum boreale. 
( Third Part.) 
The first part of this Memoir concluded with a notice of 
the orders Labiatae and Scrophularineae, which are but 
sparingly dispersed in this immediate neighbourhood. It 
will, therefore, be best to proceed with those plants arranged 
under the class Tetradynamia of Linnaeus, or the order 
Cruciferae of Jussieu; among which, the first that I find 
sufficiently uncommon to demand notice, is the Cochlearia 
Armoracia, which is plentiful on the banks of the Chelmer, 
and to all appearance decidedly wild, though Dr. Hooker 
seems to doubt whether it is really a native. 
Cardamine Amara. On the banks of the Can, Chelms- 
ford, growing in such luxuriance as sometimes to attain 
the height of nearly two feet. 
Coronopus Didyma. This plant formerly grew on a hedge- 
bank near Chelmsford, from whence it was gathered ; but it 
is now extinct there, the seeds having probably been 
brought in some manure, which was deposited close to the 
spot. 
Erodium cicutarium. Little Baddow, near Chelmsford. 
Geranium Pyrenaicum. Danbury Hill, near Chelmsford. 
G. Columbinum. Growing with the last, but very spar- 
ingly. 
Corydalis claviculata. Hedge-banks, near Chelmsford. 
This very delicate little flower, which Hooker says, " is most 
abundant in the Highlands,” seems to be rare in this vicinity, 
growing only on shady banks, mostly excluded from the sun. 
Genista tinctoria. Galleywood Common, Chelmsford. 
Lathyrus Apliaca. In a clay-pit, near Chelmsford. 
L. Nissolia. Growing with the last, and probably else- 
where ; but, from its grass-like leaves, it is easily overlooked. 
That very rare species, the L. hirsutus , is found at Rochford, 
and also at Nazing ; both in Essex. 
