Lyon : OBSERVATIONS ON EMBRYOGENY OF NELUMBO. 651 
number of Nympheacez will be studied during the coming 
summer. The Nymphezacee should be classified, in the natural 
system, in a subseries Nympheinez coérdinate with the 
Potamogetoninee, Alismineze and Butominez in the series 
Helobie. 
RECAPITULATION AND SUMMARY. 
1. Velumbo both in its anatomy and embryogeny conforms 
to the type of the Monocotyledons. 
2. The two fleshy bodies of the embryo arise through the bi- 
furcation of the originally single cotyledon. 
3. The membrane surrounding the plumule is, as conjectured 
by Wigand, a true endosperm arising within the embryo-sac. 
4. The family of the Nymphzacee should be classified 
among Monocotyledons in the series Helobiz. 
The writer wishes to express his obligations to Professor 
Conway MacMillan who has carefully followed the present in- 
vestigation, offering many suggestions which have been incor- 
porated in the general discussion. 
LITERATURE. 
The following bibliography includes the more important works 
dealing with the anatomy, morphology or affinities of Velwméo, which 
have been found of value in the present research. 
1. Baillon, H. (’71). Monographie des Nymphzacées. Histoire des 
Plantes, 3: 77-104. 1871. 
iS) 
. Barthelemy, A. (’74). De la respiration et de la circulation des 
gaz dans les végétaux. Ann. Sci. Nat. Bot. V. 19: 131-175. 1874. 
3. Barthelemy, A. (’76). Du développement de l’embryon dans le 
Nelumbium spectosum et de sa germination. Rev. Sci. Nat. 5: 
40-44. 1876. 
4. Brongniart, A. (’27). Memoire sur la Génération et le Développe- 
ment de |’Embryon dans les végétaux phanérogames. Chap. iv. 
Ann. Sci. Nat. 12: 225-296. 1827. 
5. Caspary, R. (’78). Nymphzacee in y. Martius. FI. brasiliensis. 
ase. 77. 130. 1878. 
6. Caspary, R. (’91). Nympheacee in Die Natiirl. Pflanzenfam. 
MY. Teil. 2 Abt. 1-10. 1891. 
. Caspary, R. (’57). Flora 717-718, also Bot. Zeit. 791. 1857. 
. Clos, M. D. (’91). Interpretation des Parties Germinatives du 
Trapa natans, de quelques Guttiferes et des Velumébczum. B.S. B. 
de France, 38: 271-276. 1891. 
ant 
