no 
formes a la base, plus ou moins largement ailees au sommet ; 
echancrure ouverte, ordinairement peu profonde, a lobes plus 
courts que le style ou l’egalant.” I think we may safely leave 
it under T. silvestre. — J. E. Lousley. This plant seems 
scarcely to differ from the Mendip form. — H. W. Pugsley. 
In reference to a form of Thlaspi collected at Llanrwst, 
June 10, 1905, by A. 0. Hume and named by him occitanicum 
(Jord.), I wrote (Rep. W. E. Club, 1929-30, p. 15) “ This is 
not occitanicum Jord. The long style removes it from 
silvestre .... It would seem that long-styled plants of silvestre 
have often erroneously been taken for occitanicum . . . .” 
Though badly expressed, it is evident, I think, that I recognized 
the resemblance to silvestre Jord. However, Jordan’s figure 
(Obs. 3, pi. IB) shows fruits with the style not protruding 
beyond the wings, while in the text (p. 10) he writes “ sinus 
obtus, egal au style, rarement un peu plus court.” Rouy’s 
FI. de France, admirable and useful as it is, should not be 
used alone, without reference to the descriptions and figures 
which he cites so abundantly. I am now at work on these 
forms of Thlaspi, and I may state that the Llanrwst plant 
resembles T. Gaudinianum Jord. (Obs. 3, p. 14 and pi. 1 bis 
B) far more closely than T. occitanicum ; but it does not 
entirely agree with either of these Continental forms. In 
capsule and style it seems to be identical with Gaudinianum, 
but in the peclicel-characters it comes nearer to occitanicum. 
— E. Drabble. 
The style in these specimens is shorter than in H. S. 
Thompson’s Winterhead specimens, and this variation is 
allowed by Coste (Flore de la France ) under T. silvestre Jord. 
(T . alpestre G. G.) . ... T. alpestre and T. silvestre arc admitted 
to be biennial or perennial. I have specimens from near 
Settle, and from Llanrwst, both of which localities were 
recorded so long ago as 1870 as stations for T. occitanicum 
Jord. Neither of them agrees with the description. The 
description of alpestre by Linncus is good as far as it goes ; 
that of silvestre Jord. is more minutely detailed, and either 
might serve, but I see no variety in the Llanrwst specimens. 
— J. Eraser. 
Thlaspi alpestre L. aggr. Winterhead, near Shipham, 
N. Somerset. In broken, bushy ground on Dolomitic con- 
glomerate, May 16, 1931. — H. S. Thompson. This seems to 
be the Somerset plant which has been erroneously named 
