388 BOTANICAL GAZETTE [NOVEMBER 
anomalous monocotyledons, rather than as anomalous dicotyledons 
as suggested by Morrrer. 
3 SUMMARY. 
1. The development of the embryo sac is practically the same in 
all species. 
2. In all species the endosperm nucleus divides and the daughter 
nucleus in the antipodal end enters a nucellar tube or sac which 
penetrates the nucellus. 
3. This nucellar tube or sac is apparently for the purpose of 
transferring food from the nucellus to the endosperm, from which it 
is transferred to the embryo. 
4. The endosperm is of two types: the cellular in Nymphaea and 
Castalia, and the nuclear followed by the cellular in Brasenia pur- 
purea and Cabomba piauhiensis. 
5. The character of the endosperm in the late stages of Brasenta 
purpurea and Cabomba piauhiensis indicates a greater importance 
in germination than in the other genera. J 
6. The embryo of Nymphaea advena( ?) originates as a spherical 
mass of cells and later develops a cotyledonary ridge and suspensor, 
while the other species develop embryos consisting of a single row of 
cells, from which is formed a spherical embryo supported by a sus- 
pensor. A crescent-shaped cotyledonary ridge is then developed, — 
ranging from two-thirds to almost the entire distance around the 
embryos. 
7. With the development of the cotyledonary ridge, two cotyle- 
donary lobes are produced which may readily be mistaken for two 
cotyledons. 
Estaci6n CENTRAL AGRONOMICA, 
Santiago de las Vegas, Cuba. 
Note: The material from which these studies were made was submitted 
to specialists in taxonomy. There was some difference of opinion as to whether 
the Nymphaea was a large-leaved form of N. advena or another closely ae 
species. Castalia pubescens is an introduced species from eastern India, Philip- 
pines, Java, and Australia. It was collected in a large lagoon near San A 
de las Bafios in Havana Province. Nymphaea advena(?) was collected in oe 
river at San Cristobal and in a small lagoon south of Herredura in Pinar a 
Rio Province; all other species in this same small lagoon. Specimens ff 
these species have been deposited in the New York Botanical Garden. 
