(32) THE BOTANICAL EXCHANGE CLUB OF THE BRITISH ISLES. I72 
“ It belongs to Anacyclus, different from Anthemis by its largely 
winged achoenia (at least the outer ones) and in the section Di- 
orthodon also by the unequally 5 cleft disk florets with 2 (sometimes 
but i) longer, upright lacinise. I think it is the widely distributed 
Mediterranean species A. clavaius, though I knew- this species only 
with purely white ray-florets. I cannot identify it with the yellow- 
rayed A. radiatus^ because the involucral bracts have no ‘ dia- 
phanous dilatation above ’ referred to by Babington, ‘ Manual,’ 
Ed. 8, p. 195. At all events I think it improbable that the Welsh 
plant with yellow rays represents a hybrid between A. clavafus 
and A. radiaius, rather than a ray-colour variation of the former. 
I think it is not quite sure that the two species are really different 
As to the brown- margined involucral bracts your plant 
belongs to the variety marginatus {Anac. margin. Guss.), cf. 
Willkomm and Lange ‘Prodr. FI. Hisp.’ II., p. 84.” The plants 
all grew in one circumscribed area, and unfortunately do not appear 
to have survived the winter. 1 could find no trace of them in 
July 1904, and have not been able to make extended obser- 
vations. The specimens, however, though gathered late, afford 
accurate detail. A careful examination of them in the light of 
Professor Ascherson’s remarks has convinced me that they are 
separable into two distinct forms, corresponding (apparently) to 
A. clavaius, var. marginatus, and A. radiaius. I have accordingly 
divided them into two bundles, in one of which the labels are 
marked A, in the other B. A. Specimens in A are light-rayed, 
white with a tinge of yellow, or pure white ; the involucre bracts 
usually narrow to the top and have sometimes a narrow scarious 
margin, — very rarely a broad one. B. Here the rays are coloured, 
of a lemon to golden yellow (does this variation depend on the 
age of the anthode?), and are accompanied by a broader-topped 
bract which expands into a ‘diaphanous dilatation above.’ This 
broad scarious margin becomes opaque and brown with age, and 
is quite common ; indeed its absence in B seems as rare as its 
presence in A. Its breadth often exceeds that of the bract 
itself. I put A accordingly to A. clavaius, var. marginatus, and 
B to A. radiaius. But the differences, if they stand alone, are 
so slight as to justify Prof. Ascherson’s hesitation in keeping the 
forms apart. The two forms grew side by side and to some 
extent intermingled. A very few doubtful plants, intermediate 
at least in colour, I have not distributed, as they were too few : 
but they suggest a possible hybridisation, or in any case 
a completer series of forms than I am able to send now. — 
H. J. Riddelsdell. 
Senecio vulgaris, L., var? Waste ground, Aylestone, Leics., 
16th June 1905. — A. R. Horwood. Suggested to be a variety with 
leaves much more amplexicaul and with larger auricles than 
