433 
cambrica is limited to the Principality. — J. E- Little. 
I have no ‘ Hudson,' but in Smith’s Brit. FI. Ill, 440 (1829) 
are some interesting notes on the varieties of this very poly- 
morphic species : e.g. “ Swiss specimens . . . are even more 
various than those of Britain, especially in the size of the 
flowers.” Among my Welsh specimens labelled var. cambrica 
the only ones with larger flowers than the rest were gathered 
by myself at Rhaiadrdu Falls, Dolgelley, 1902. Apparently 
we must not assume that very dwarf plants with somewhat 
broad root-leaves which grow on rocks of mountain streams in 
Teesdale, Cornwall, etc., are var. cambrica. But has anyone 
cultivated this variety ? — H. S. Thompson. 
Anacyclus Valentinus L. Grain-sifting alien. Allotments, 
Splott, Cardiff, Glam., v.c. 41, Nov., 1927. — A. E. Wade. 
Comm. National Museum of Wales. Native in the Pyrenees 
Orientates, Spain, Liguria, and N. Africa. — H. S. Thompson. 
Arctium majus Bernh. (Achenes). Purwell, Hitchin, 
Herts., Sept. 6, 1925. — J. E. Little. This is from the only 
station known to me in North Herts., where A. majus is appar- 
ently very scarce. I have seen it this year in Cambridgeshire 
(Littleport) and in Norfolk (Wretton Fen) ; also in 1925 at 
Shouldham Warren.— J. E. Little. 
Arctium minus Bernh. (Achenes). Purwell, Hitchin, 
Herts., Sept. 6, 1925. — J. E. Little. These two series of 
Arctium achenes should be very useful. — H.S.T. 
Centaurea •. Pipe near Hereford, July 21, 1927. — 
R. J. Burdon. An interesting series of plants practically 
uniform in characters, making an approach to C. pratensis 
Thuill. by reason of the ovate or roundish discs of the phyllary- 
appendages, and radiate outer florets. It would be interesting 
to learn if the material contributed was obtained from one 
plant, or if this form was plentiful. I surmise that it was 
an individual variation. In spite of the characters mentioned, 
the correct position of this form would appear to be under 
C. nemoralis Jord., of which it is probaoiy an" aberration, 
such as is occasionally met with. Inat it is not C. pratensis 
appears evident to me, from the features of the teeth of the 
appendages, which by their length, flexuousness, and extent 
of ciliation, indicate that this is a nigra form. — C. E. Britton. 
The Rev. Preb. Burdon informs me that “this Centaurea 
was growing in several patches along a lane near Pipe Church. 
