i 7 8 
Madeline Carson. 
under date of January 27th, 1905, the writer expressed the belief 
that Codonotlieca is the “male spore-bearing organ of the Neuro- 
pteris type” of Cycadofiliccs. In a letter to Mr. David White, 
dated March 20th, 1905, the writer expressed the belief that some 
one of the seeds at Mason Creek and Codonotlieca would ultimately 
be found to represent respectively female and male fruits of the 
Cycadofilicinean genus and species Neuroptcris decipiens. Similar 
views were expressed toother palaeontologists. The several important 
new types of fructifications since described by various writers from 
the early deposits appear to the writer to lend support rather than 
discouragement to the hypothesis of the Cycadofilicinean relations 
of Codonotlieca. 
ON THE ASSIMILA TORY TISSUE OF MANGROVE 
SEEDLINGS. 
By Madeline Caiison, B.Sc. 
[Text-Figs. 8—10.] 
I N making a study of some seedlings of Rliizophora and Bruguiera 
my attention was drawn to their mode of nutrition. As is 
well known, the seedlings of these and other mangrove plants* 
remain attached to the fruits for a considerable time, during which 
they obtain their food from the parent plant. In Bruguiera , 
according to the researches of Haberlandt 1 , the endosperm consists 
of the cells, some of which form a connection with the cotyledons 
and with the ovular integument by haustorial processes. 
But, as this method seemed to me not sufficient to provide all 
the food material necessary for so large a seedling, often attaining 
a length of a foot or more, I concluded that the seedling itself 
might undertake some carbon assimilation particularly as Professor 
Weiss, who gathered the seedlings at Mombasa, informed me that 
when fresh they had distinctly green colour beneath the yellowish 
epidermis. 
' Haberlandt G. Die Ernahrungder Keimlingeund die Bedeutung 
des Endosperms bei viviparen Mangrove-pHanzen. Annales 
du Jardin de Buitenzorg, Vol. XII., 1895. 
