150 TRANS. OF THE ACAD. OF SCIENCE. 
Ser ; perhaps, however, by its subtherebinthinous property 
and other characters accountable of rutaceo-xanthoxylous 
ity. 
Apetalism abounds in Malpighiacex, Acerine, and Fraxinee, 
and a correct clue as to what other depauperated forms repre- 
sent is certain! it. If, with most authors, we assume 
for us ace an affinity to epigynous Cupulifere, 
we have once more attic at an epigynous, nuciferous, eupu- 
late, caryopse form, resembling, in these points, Synantheree. 
Datisca, apetalous and of peel habit, has much of a 2 
indaceous: character, also the open carpels of Reseda, 0 
essentiall y gruinal connection and therefore no less infin 
tial in vindicating to Datisca a sapindaceous neighborhood. 
Tt ean not be denied that, in florition, the female flower of 
Datisca has exactly the appearance of that of Juglans, after- 
wards alienated by a different development of seed; Juglans 
ise however, has an ossified epigynous achenium for a fruit, 
included i in a cortical cupule. 
ae we assume the tt a achenium of Betula for the 
pigy s form: of p A ous Ulmnus, their es juxtapo- 
uglandew connect, b erocarya, 
My oa, Whose | fruit is 
1 Carpinus, join Canna 
ma ity between Carya and 
aoa Endlicher to bie 
et wil wdiacee, violently separating t 
rnatural location with other Amentacee. D oe 
of Anac require to be 
