14 
BOTANICAL EXCHANGE CLUB. 
Malva borealis, Wallm. [M. He^iningii, Goldb.) This siiecies is 
now becoming one of the common mallows of the neighbourhood 
of London. From what we in England call ^[. rutundifolia of 
LiniifBus, which is the M. vuhjaris of Fries and many other conti- 
nental authors, it differs by its much smaller flowers and fruit- 
carpels marked on the back by distinct transverse ridges. It 
comes much nearer to the common South European M. parcijiora 
of Linnaeus, but in this latter the calyx is more markedly accrescent 
in the fruiting stage, and the dorsal ridges of the fruit-carpels are 
more strongly pronounced and produced into marginal teeth. I 
have not seen any British specimens of the true purcijiora. This 
year Mr. Nicholson has contributed specimens of three varieties of 
borealis, aU gathered in the neighbourhood of Kew, with characters 
as follows : — 
1. The type, as issued by Fries in his ‘Herbarium Normale ’ 
under the name of M. rotundifolia, and figured by Eeichenbach 
under the same name in his ‘ leones,’ tab. 4835, with slightly 
hairy fruit, a quarter of an inch in diameter, and a relatively 
small calyx with sepals hardly at all incurved at the tip. 
2. A form, a smaller fruit (one-sixth to one-fifth of an inch 
in diameter) not particularly hairy, with a calyx as large as in the 
type, which wraps over it so as nearly to hide it. This is probably 
ili. microcarjja, Eeich. Ic., tab. 4833, but not the plant so called by 
Desfontaines, which is a parrijiora form. 
3. A form with densely hispid fruit as large as in the type, but 
with the sepals incurved and wrapped over it as in the second 
variety. 
Scleranthus biennis. Sandy pastures at Milverton, Warwick. — 
H. Bromwuch. 
Lavatera sylvestris. A good supply of Scilly specimens this 
year from Mr. Ealfs and others. 
Geranium striatum. Shady hedge-bank at Penzance, W. B. 
Wateefall ; and the Cumberland side of Ulleswater Lake, Eev. A. 
Wood, gathered by W. Hodgson. 
G. PMhertiamim. Small-fiowered forms with more or less 
fleshy leaves this year, from the east side of Vazon Bay, Guernsey, 
Dr. Frasee ; shingly beach at Pett, E. Sussex, J. H. Jennee ; sea- 
beach west of St. Leonard’s, Sussex, C. Bailey ; rocky ground near 
Torquay, Mrs. Lomax ; and Stokes Bay, Hants, H. & J. Groves. 
Trifolium supinum and spmmosum. Waste ground on the Surrey 
side of the Thames, near Kew. — G. Nicholson. 
Fotentilla norvegica. A good supply sent by Dr. Arnold Lees 
with the folloAving note : — “ This occurs in two West Yorkshire 
localities, some twelve miles axiart, in both of which it has been 
known for over a dozen years. It continues to spread along 
certain lines of waterway. Along the banks of the canal, and 
Eiver Aire, from Lake Loch Stanley towards Castleford, in the 
vice-county of S. W. York, it is found for miles ; and also grows 
in XH’ofusion in the stonework of the canal between Armley Mills 
and Kirkstall in the vice-county of Mid-west York. It was first 
recorded in print in 1866 (‘ Naturalist,’ O.S., vol. ii., p. 80), by the 
