BIBLIOGRAPHY 285 



Page of text 

 on which 

 reference 

 is made 



with anthocyanin, or to coloration with anthocyanin 



under certain conditions. p. 155 



458. Hildebrand, F., 'Ueber einige Variationen an Bliithen,' 

 Ber. D. bot. Ges., Berlin, 1893, xi, pp. 476-480. 



The author notes the occurrence, among the pale blue 

 flowers of Iris florenlina, of a sudden 'sport' (in some 

 individual flowers) which had a large portion of the 

 perianth dark violet. Also a hybrid Dahlia (from red x 

 white) was found to produce both red and white flowers 

 and pure red flowers at different times. p. 191 



459. Newell, J. H., 'The Flowers of the Horse Chestnut,' 

 Bot. Gaz., Bloomington, Indiana, 1893, xvm, pp. 107-109. 



Change of colour in flowers with age. 



460. Praeger, R. L., 'Colour- variation in Wild Flowers,' 

 Irish Nat., Dublin, 1893, n, pp. 174-175. 



The author gives a list of colour-variations he has noted 

 in British wild flowers: ex. Scabiosa succisa (white, pink), 

 Orchis mascula (white, flesh-colour), Jasione montana 

 (pink): white of Scilla verna, Vicia sepium, Tr (folium 

 pratense, JETpilobium montanum and many others. 



461. 1894. Chabert, A., 'Les variations a fleurs rouges de certains 



Galium,' Bui. soc. bot., Paris, 1894, XLI, pp. 302-305. 



In connection with a red-flowered variety of Galium 

 silvestre found by Gillot (see No. 457), the author objects 

 to its being called a new variety ; he believes ' ery thrism ' 

 on the contrary to be merely due to chemical nature of 

 the soil, etc. He quotes cases of occurrence of red- 

 flowered individuals of other species of Galium. p. 155 



462. Gillot, X., 'Variations paralleles a fleurs rouges des 

 especes du genre Galium,'' Bui. soc. bot., Paris, 1894, XLI, 

 pp. 28-30. 



Record of red-flowered varieties of Galium spp., the 

 types being normally white-flowered. 



463. Median, T. 5 'Contributions to Life Histories of Plants. 

 On Purple-leaved Plants, No. 11,' Proc. Acad. Nat. sci., 

 Philadelphia, Pa., 1894, pp. 162-171. 



Note on grafting of blood-variety of Betula on type. 



464. Pillsbury, J. H., 'On the Color Description of Flowers,' 

 Bot. Gaz., Madison, Wisconsin, 1894, xix, pp. 15-18. 



Attempt to classify and define terms used for colour by 

 means of a mechanical device. 



465. 1895. Prehn, J., 'Ueber das Vorkommen zuweilen weiss- 



bliihender Pflanzen,' Schr. natw. Ver., Kiel, 1895, x, 

 pp. 259-261. 



Author gives a list of white -flowered varieties he has 



