4 io BIBLIOGRAPHY 



Wachter, W. (i897 2 ) Beitrage zur Kenntniss einiger Wasserpflanzen. III. 

 [P- X 59] Flora, Bd. 84, Erganzungsband zum Jahrgang 1897, 



PP- 343-348- 



[This paper is a continuation of the first part of Wachter, W. 

 (I897 1 ). It contains an account of experiments upon the 

 heterophylly of Castalia, showing that the production of the 

 different forms of leaf in this genus is dependent upon external 

 conditions, just as in the case of the Monocotyledons previously 

 investigated;] 



Wager, H. See Scott, D. H. and Wager, H. (1888). 



Wagner, R. (1895) Die Morphologic des Limnanthemum nymphaeoides 

 [p. 39 and Fig. 23, (L.) Lk. Bot. Zeit. Jahrg. 53, Abt. i. 1895, pp. 

 p. 41] 189-205, i pi.. 1895. 



(A general descriptive paper dealing with the development, 



branching, etc. of this species.) 



Walker, A. O. (1912) The Distribution of Elodea canadensis, Michaux, in 

 [p. 212] the British Isles in 1909. Proc. Linn. Soc. London, 



I24th session, 1912, pp. 7177. 



(This paper gives the result of enquiries made in 1909 among 

 local natural history societies as to the degree of success 

 attained by Elodea in establishing itself in this country.) 



Walsingham, Lord, Shooting (Moor and Marsh). Badminton Library. 

 and Payne-Gallwey, xiii + 348 pp. London, 1886. 



R. (1886) (The authors mention, pp. 158 and 165, that Brent Geese feed 



[pp. jor 302] on Zostera, and that these birds are almost confined to those 



parts of the coast where Zostera occurs.) 



Walter, F. (1842) Bern erkungen iiber die Lebensweise einiger deutschen 



[pp. 15, 17] Pflanzen. Flora, Jahrg. xxv. Bd. u. 1842, pp. 737- 



748, i pi. 



(A picturesque account of Walter's discovery of tuber- formation 

 and heterophylly in Sagittaria sagittifolia.) 



Warming, E. (1871) Forgreningen hos Pontedenaceae og Zostera. Viden- 

 [p. 135] skab. Meddel. fra den naturhist. Forening i Kjoben- 



havn for Aaret 1871, pp. 342-346, i text-fig. 

 (This Danish paper deals with the nature of the shoot system 

 in the plants mentioned.) 



Warming, E. (1874) Bidrag til Kundskaben om Lentibulariaceae. Viden- 

 [p. 100] skab. Meddel. fra den naturhist. Forening i Kjoben- 



havn for Aaret 1874 (1874-5), PP- 33~58, 3 P ls - 

 (This paper, which is in Danish, deals with Genlisea and 

 Utricularia. The germination of Utricularia is described.) 



Warming, E. (1881, Familien Podostemaceae. Kongel. Dansk. Videnskab. 



1882, 1888, 1891) Selskabs Skrifter. Sjette Raekke. i. Vol. n. 1881, 



[pp. 112, 118, 310] pp. 1-34, 6 pis. 2. Vol. u. 1882, pp. 77-130, 9 pis. 



3. Vol. iv. 1888, pp. 443-514, 12 pis. 4. Vol. vn. 



1891, pp. 133-179, 185 text-figs. 



(This important monograph is in Danish, but each part is 



followed by a French resume ) 



