Lathyrus Aphaca L. Par, Cornwall, v.c. 2, -June 25, 1901.— 
A. 0. Hume. Comm. S. Lond. Bot. Inst. First recorded in 
Britain in 1632, from about Dartford, Kent, and a colonist of 
“English” type according to H. C. Watson ; this is remarkably 
rare west of Somerset, though very widely spread over conti- 
nental Europe. In Ireland it has appeared as a casual near Cork 
and Belfast. — H.S.T. 
Prunus insititia L. Chichester, W. Sussex, March 31, June 13, 
1923. — R. J. Burdon. I agree. The size of the leaves, their ser- 
ratures, the dense pubescence along the midrib beneath, the size 
of the petals, and the pubescent peduncles, often in pairs, make 
this typical P. insititia. — J. Fraser. Yes, the pubescence on the 
peduncle is evident, and the velvety clothing on the shoots of 
1922 is persistent. The anthers were apparently pure yellow. 
I would suggest for observation the colour of the anthers in the 
three species (if they are really separable). So far as my 
present observation goes, those of P. spinosa and P. clomestica are 
more or less tinged with orange-red. Is spinosity of real value 
as a distinctive character 1 In Pyrus Malus it is only a growth 
condition. Large old bushes of P. spinosa can be practically 
spineless, at least above, or they can be extremely spinose. — 
J. E. Little. I believe so. — C. E. Salmon. 
Spiraea salicifolia L. Hedgerows, etc., Llangower and Llann- 
wchllyn, Merioneth., v.c. 48, August 9, 1923. — W. C. Barton. 
When was this N. American and Eastern European shrub intro- 
duced into Britain, and why is it chiefly found in the North and 
West, and in Ireland as a denizen? (Wales, Cornwall, S. Devon near 
Plymouth, and in Scotland). Babington says nothing to doubt its 
nativity. Smith says, “Mr. G. Don assures us that it is wild in 
Scotland.” Wm. A. Clark omitted it from his “First Records of 
Brit. Plants.” An ecological study of its present distribution in 
Britain would be interesting. Is it native in Europe at all ? Sir 
J. D. Hooker gave Arctic Europe (“Stud. FI.”), but Fries 
(“Summ. Yeg. Scand.”) said in 1846, “Advent, sed pi. 1. vere 
inquil.”— H.S.T. 
Pubvs caeresiensis Sudre. var. integribasis Rogers [1003]. 
Neighbourhood of Portmadoc, Carnarvon, v.c. 49, Aug. 24 and 
Sept. 15, 1922.— W. C. Barton. In quantity all around Port- 
madoc, v.c. 48 and 49, August and September, 1922. Also seen 
in 1923 near Dolgelly, v.c. 48. — Barton and Riddelsdell. 
Pi. hesperius Rogers [1002]. Tremadoc, Carnarvon, v.c. 49, 
Sept. 15, 1922. — W. C. B. At one locality in quantity: Tre- 
