SEED-STRUCTURE. OF RAFFLESIACEH AND HYDNORACEA. 313 
In the seed from which this preparation was taken, from some cause 
or other, apy fully developed, the em abel fe had not attained its 
permanent a ee r of the endosperm and the embryo, are no 
The seeds of Apilinihin Casearia, Poit., are closely related in 
Seistare. to those of the allied genus Pilostyles.t| The embryo is here 
as in the former surrounded by a layer of endosperm cells. The com- 
pression of the inner cells of the endosperm, that is to say if such ever 
existed, was so complete that no trace of them was left, at least in 
d 
an embryo-cord, and as such we may ee be justified in consider- 
the testa is formed of two la ers, an re tas consisting of t 
= fragile almost empty cells—not juicy as in peta 
an inner composed of excessively dense, thick, brownish-red cells. 
The cell-membrane _of the inner layer, soon completely consaliate 
t 
* Seeds of this nature have otherwise not come under my observation; bu ut 
from a number of drawings which I had the opportunity, through Strasburger’s 
kindness, of oe over, it appears that he found several of the same rat 
‘haps it was se the fruit of his specimen was a nl younger than 
t Through he kindness of Professors Eichler and Warming, I receiv a ripe 
fruit of this Chat collected in the vicinity of = Sans by laziou. I have 
Acoma the opportunity of examining so eeds from Poiteau’s original 
Fed ething quite similar occurs in the seeds of Monotropa Hypopitys. Just 
as in Apodanthes, we have here, what in the young stage was clearly an embryo- 
a thin thr y 
ble. The originally spherical soap also suffers compression, an 
eventually assumes an irregular angular form. In passing, I may mention 
two. The five are arran yers in such 4 manner 
Ay Bypophysi3 he is 1-celled, Ory the two others each 2-celled. In un. 
ontents of the seed which have been rendered transparent, there ia only one 
pesiton In fries nyt the cells are visible. If turned } farther the cages appears 
Consist of three cells one above the other, or even of only two, as the exceed- 
ingly small lower cell is uften no longer to be seen. See the pate 10 and 11. 
