184 the botanical exchange club of the BRITISH ISLES. 
will be able to spring up. Mr. Arthur Bennett kindly named this 
plant, and compared it with the fine specimens at Kew. — Alfred 
Fryer. 
Pulicaria dysenterica^ Gaertn. A form with much longer rays than 
usual occurs on the coralline oolite, near Oxford, both in Berks and 
Oxon. The specimens sent are from Wytham, Berks, and are not the 
extreme form. — G. C. Druce. 
Bidens minima^ L. On the margin of the lake surrounding Tabley 
Old Hall, Cheshire, 27th August, 1887. I presume this plant is a 
mere state of cernua^ in whose company it grew in a dense under- 
growth. It was somewhat remarkable to see large solitary plants of 
the type standing out from a mass of dwarf minima. — Charles 
Bailey. 
Pyrethrum coiymhosum., W. On the quay, Bangor, where it has 
been established eight or ten years, 20th August, 1887. — J. E. 
Griffith. “ I named this plant for Mr. Griffith with some hesitation, 
as it has a much more condensed inflorescence than the ordinary 
continental species. It is the stunted inflorescence, and the absence 
of the ray florets, which have led to its being passed over as Tanacetiim 
vulgar e. As far as I know, it has not previously been recorded 
amongst aliens in Britain.” — Charles Bailey. 
Matricaria maritima.^ Lamk. Below Rousdon, Undercliff, S.E. 
Devon, July, 1887. — J. Cosmo Melvill. Messrs. J. G. Baker and 
W. H. Beeby regard this as variety ^alina. 
Senecio squalidus^ L. Oxford, June, 1886. A form with leaves 
much more entire than usual.' — G. C. Druce. 
Senecio squalidus x vulgaris. This, Mr. Groves, of Florence, 
agreed with me in considering a hybrid. The ray is much shorter and 
more contiguous than in squalidus ; the leaves are more crisped, and 
of thicker texture. It grew with both species on waste ground. On 
the walls squalidus is fairly constant; on waste ground, where vulgaris 
grows with it, great variation occurs. Dr. Boswell Syme named one 
of these intermediates vernalis.^ W. et K., but neither the Oxford nor 
the Cork specimens agree with the plant of Waldstein et Kit. — 
G. C. Druce. 
Senecio crassifolius., Willd. On waste ground (but rarely) about 
Oxford, June, 1886. — G. C. Druce. 
A. Jacohcea^ L., \'2X.flosculosus. Smerwick Harbour, Kerry, 17th 
August, 1887. — Augustin Ley. 
Car dims crispus^ L., var. polyanthemos. Sellack, Herefordshire, 
first week in August, 1887. — Augustin Ley. 
Centaurea decipiens., Thuill. Ilsley Downs, Berks, in great 
quantity, 6th August, 1887. — W. Moyle Rogers. 
Hieracium Pilosella., tending towards the variety Peleterianum. 
Dovedale, Derbyshire, 23rd June, 1886. — W. H. Purchas. 
H. collinum^ Fries. Hort., Bangor, July, 1887. — J. E. Griffith. 
This I compared at the Kew Herbarium with Mr. Baker, and it is H. 
pratense^ Tausch. 
H. melanocephalum^ Tausch. Ben-na-Bourd, S. Aberdeen, loth 
August, 1887. — W. R. Linton. 
