JCOTES SUPPLEMENTAL TO THE FLORA OF BHISTOL 43 



flowers only with a few diminutive pinnatifid leaves shaped like the 

 usual uppermost leaves of the species. This "median Horal pi-olitica- 

 tion " is said to be most frequent in plants having their Howers 

 in close caj)itula. ' 



Erigeron canailense L. Many plants on ground lately used as a 

 mule camp oft" Yanley Lane, Long Ashton, 191G ! Still on Wapping 

 Wharf, Bristol Harbour, 1916 ! 



xE. Hulsenii Kerner. This hj'brid, observed by Miss Eoper in 

 1911 on the site of abandoned iron works at Ashton Gate, Avas still 

 there in Sept. 1916. Mons. G. Beauverd, who makes a special study 

 of Compositse, had never seen this plant, though he had searched for 

 it repeatedly in the numerous Swiss stations where E. acre and 

 E. canadense grov/ together : he was therefore glad to get an example 

 from Bristol. 



Eilago minima L. Still at Hanham, G., after an absence of some 

 years : about 30 plants in Fry's station, 1917 ; Miss Roper. On the 

 coast north of Clevedon, S., with Gnaplialium sylvaticum, 1916 ;; 

 Rev. E. Ellmun. 



Gnaplialium sylvaticum L. Drove in Asham Woods, S., 1917; 

 Miss Roper. 



Antennaria clioica Gaertn. Kough heathy jjasture, Failand, S.,. 

 1913 ! Mrs. Inglis. A genuine locality, though there is but a single 

 patch of a yard square. Small and scarce on the j^eat near Ashcott, 

 Station, 1913 ; O. Perren in Fl. Som. Suppl. 



Chri/santliemum Leiicantliemnvi L. In July 1916 a member of 

 the University of Bristol Botanical Club exhibited some Moon Daisies, 

 in which the normal outer ring of ligulate florets was replaced by a 

 row of tubular ones. These grew in a pasture near Alveston, G., and 

 were thinly scattered over a space of aboiit ten acres, a wide interval 

 separating each plant fi-om its fellow with plenty of the ordinary 

 form intervening. The altered ray-florets are perfectly white and in< 

 most cases regular in shape, but they vary in size and length, the 

 smaller heads with shorter flowers being the more quaint and pretty. 

 In a few plants partial and irregular dialysis of the ray corollas had 

 taken place, showing transitional changes between the ligulifloral and 

 tubulifioral conditions. Changes of form in flowers from an irregular- 

 condition to that of symmetry come under the general head of 

 Peloria. In his work Variation in Animals and Plants Dar\vi» 

 alludes to the tendency that peloric plants have to revert to the usual 

 form, as shown by the fact that when some peloric flowers Avere 

 crossed Avith pollen from flowers of the ordinary shape, and vice versa, 

 not one of the seedlings in either case bore peloric flowers. A similar 

 remark has been made Avith reference to malformation in general by 

 other observers. Hence it may be concluded that these i)ai'ticular 

 Moon Daisies are unlikely to increase and spread to any great extent, 

 as their peculiarity would not be perpetuated unless the peloric 

 heads had been self-fertilised ; this consideration may possibly explain 

 how it is that the individual plants at Alveston are so widely 

 separated from each other. AVe may suppose that a considerable 

 proportion of the original colony has been replaced by reversions to 

 normality. 



Artemisia Absinthium L. In ])lenty about quarried rock under 



