372 BIBLIOGRAPHY 



Goebel, K. (1896) Ueber Jugendformen von Pflanzen und deren 



[p. 156] kiinstliche Wiederhervorrufung. Sitzungsber. d. 



math.-phys. Classe d. k. b Akademie d. Wissensch. 



zu Miinchen, Bd. xxvi. 1897 (for 1896), pp. 447-497, 



1 6 text-figs. 



(Pp. 487-491 are devoted to heterophylly in water plants. 

 The author regards the band-shaped submerged leaves of many 

 Monocotyledons, not as representing a direct adaptation to 

 the medium, but as a juvenile form of leaf which may also be 

 produced at later stages in the life of the plant, if the external 

 conditions are unfavourable.) 



Goebel, K. (1904) Morphologische und biologische Bemerkungen. 15. 



[p. 104 and Fig. 70, Regeneration bei Utricularia. Flora, Bd. 93, 1904, 



p. 104] pp. 98-126, 17 text-figs. 



(Includes an account of the formation of adventitious shoots 

 from the leaves of the water Utricularias.) 



Goebel, K. (1908) Einleitung in die experimentelle Morphologic der 

 [pp. 161, 281] Pflanzen. viii + 260 pp., 135 text-figs. Leipzig and 



Berlin, 1908. 



(In this book heterophylly in amphibious plants is dealt with 

 at some length, with special reference to Myriophyllum pro- 

 scrpinacoides and Limnophila heterophylla.) 



Goebel, K. (1913) Morphologische und biologische Bemerkungen. 22. 

 [pp. 234, 344] Hydrothrix Gardneri. Flora, N.F. Bd. 5 (Ganze 



Reihe, Bd. 105), 1913, pp. 88-100, 9 text-figs. 

 (An investigation of a peculiar submerged member of the 

 Pontederiaceae with 'long' and 'short' shoots and cleisto- 

 gamic flowers.) 



Goppert, H. R. (1847) Ueber die Schlauche von Utricularia vulgaris und 

 einen Farbestoff in denselben. Bot. Zeit. Jahrg. 5, 

 1847, pp. 721-726. 



(An account of the structure and development of the bladder, 

 which the author regards as a metamorphosed "Fiederblatt- 

 chen." He records the occurrence of blue pigment in the cells 

 of the bladder.) 



Goppert, H. R. (1848) Ueber den rothen Farbestoff in den Ceratophylleen. 

 [p. 86] Bot. Zeit. Jahrg. vi. 1848, pp. 147, 148. 



(A record of the occurrence of a violet colouring matter, turning 

 brown with age, in the cellular processes at the tips of the leaf 

 segments in Ceratophyllum.) 



Graebner, P. (1901) Die Heide Norddeutschlands. (Engler, A. und 

 [p. 290] Drude, O. Die Vegetation der Erde, V.) xii + 320 



pages, i map. Leipzig, 1901. 



(This book contains some information about the flora of low- 

 land heath pools.) 



Graebner, P. See Ascherson, P. and Graebner, P. (1907). 



Gratiolet, P. See Cloez, S. and Gratiolet, P. (1850). 



Gray, A. (1848) Remarks on the Structure and Affinities of the Order 



[p. 309] Ceratophyllaceae. Annals of the Lyceum of Nat. 



Hist., New York, Vol. iv. 1848, pp. 41-50 (read 

 Feb. 20, 1837). 



(The author regards Ceratophyllum as allied to the Cabombaceae 

 and Nelumbiaceae and supports this conclusion by a com- 

 parison of the seed characters.) 



