20 THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. 
insubricum distributed through Baenitz ‘ Herb. Europ.,’ by its much 
narrower and more acute leaflets. Yet its cymes evidently keep it 
away from G. erectum, Huds. I think Herr Freyn is correct in refer- 
ring it to Galitim diwietorum, Jord., which by Rouy and Foucaud in 
' Flore de France ’ is made a variety of the sub-species G. elatum^ 
Thuill, characterised as having “ Feuilles oblongues-lineaires ; pedi- 
celles fructiferes etales dresses, courts ; panicule a rameaux tres 
etales ; corolle blanchatre.” — G. C. D. Agrees much better with 
the var. Bakeri, Syme, in Hooker and Babington, than insnbricuin. 
— E. S. Marsh.\ll. 
Galium erecluniy Huds. Near Tring, and near Hampden 
Bottom, Bucks, July 1903. The latter typical erectum — G. Cla- 
RiDGE Druce. 
Valerkviella rimosa^ Bast. Near Little Marlow, Bucks, July 
1903, but noticed in Bucks long ago. New record for 24, the type 
leiocarpa. — G. Claridge Druce. 
Erigeron canadense, Linn. Bury Fields, Odiham, N. Hants. — 
C. E. Palmer, 9 Sept. 1903. 
Alatricaria discoidea, Linn. A recently introduced alien, grow- 
ing by the side of the road between Twyford and Hurst, Berks, 
new to the county, August 1903. — G. Claridge Druce. 
Scnecio squalidus, Linn. Possibly crossed with A. vulgaris, as 
it grew with both species near the railway at Reading, and at once 
conspicuous from the much smaller flowers than those of A. squalidus, 
which now grows there in vast quantity. As I have elsewhere 
stated, the leaf outline of squalidus varies greatly, but 1 think I 
see evidences of vulgaris in the leaves of this plant, although on 
the whole A. squalidus greatly preponderates. The plant is near 
to, but not identical with, specimens which Mr. J. G. Baker called 
A. crassifolius, but which are I think a hybrid of S. squalidus . — G. 
Claridge Druce. I thank you very much for the curious speci- 
men of Senecio you have kindly sent me. At first sight it looks, 
indeed, like a hybrid, but after a more careful examination I am 
doubtful. The shape of the leaves of A. squalidus is very variable, 
at least in Italy; the flower-heads are like those of squalidus, ihe 
ligules are rather large, the ribbed fruits seem to be perfect. I'here- 
fore 1 think there are too few characteristical marks of vulgaris 
for supposing it of hybrid origin. All the dififerences, however, 
will be seen much better in living specimens. Many hybritls look 
very much like one of the parents, and therefore it would not 
be prudent to judge from dried branches only without examination 
of pollen, &c. — W. O. Focke. The plant distributed is allied to 
the plant found near Oxford by Sir W. Thistleton Dyer on the 
site of the old workhouse at Jericho in 1867, for which he pro[)osed 
the name S. squalidus, var. parvijlorus. See ‘Rep. of Lond. Exc. 
