ECHITES. 75 
lum and which are invariably directed upwards, and 
in contact with the placental tissue. 
That no nucleus is visble until the tubes have effected 
their ends, that a subcentral cavity appears some time 
after the tubes have become applied to the foramen, 
which cavity appears filled with granules of an ana- 
logous appearnce with those of the boyaux. 
That the agency of insects or of any foreign thing does 
not appear to be necessary, since a mere falling from the 
anther will be sufficient to lodge the pollinia in the de- 
sired place. 
7. That sphacelation about the grooves is very general, 
but that it does not take place along the styles. 
Addenda: That the discoid head of the stigma is very 
readily separable from the base, that the passage of tubes to 
the ovula does not appear to be essential, as in by far the 
greater number of cases I have not been able to trace them 
in the placenta, although a section of this demonstrates it to 
Contain abundance of mobile granules, that these or ana- 
logous granules appear to abound in the ovula after impreg- 
Nation that they do not move while in the tubes, but are 
very rotatory when freed from restraint. 
Mergue : November 21st, 1834. 
y 
D 
APOCYNEJE. 
Ecuirss. 
Echites, 
ES Frutex scandens volubilis ramulis compressis ciliis inter- 
E Petiolaribus, majusculis, fol lanceolatus acuminatis subtus 
b albido-glaucis, et reticulatis cymis axillaribus alternis, foliis 
Ut plurimum brevioribus, bis dichotomis, floribus albis, suave 
tis; Sepala 5, ovata. Cor. hypocraterif. tubo medium 
Paulo infra ampliato, parte ampliata lacinus, opposite sulcata, 
- lacinis 5, subobovate, torte radiantes, basi ut etiam faux pu- 
