3 
‘theses, foliowed by the proper citation of the authority who first 
spells the name correctly. 
Rule 5. In conformity with the accepted rules of generic and 
specific nomenclature, no family name shall be accepted on the 
autnority of any work published prior to the first edition of 
Linné’s Species Plantarum, in 1753. 
The words “order” and “ family” have usually been used in- 
terchangeably in botany, but judging from the present tendency it 
appears likely that in the future the name “order” will be re- 
stricted, as has long been the case in zodlogy, to groups of higher 
rank than families. For this reason the word family has been 
used in the proposed rules. 
It will be well, perhaps, to elucidate the various points touched 
upon by the rules, by giving a few illustrations. 
Rule 1. The family name should consist of a generic root with 
the termination -aceae. Thus the family founded on the genus , 
- Triuris (root: TRIURID) should be called 7riuridaceae, Lindl., not 
7nuraceae, Gardn., nor yet 7rzuriaceae, Miers. 
It should be based on the name of a recognized genus. 
‘ Palmaceae’”’ is not founded on a genus, and cannot stand. 
‘«« Aquifoliaceae”’ is founded upon the genus Agwifolium, which is 
not now usually recognized, but is considered a section of //ex. 
‘The author who thus disposes of Aguzfolium cannot consistently 
use the name Aquifoliaceae. 
It should be founded on the accepted name of a genus. The 
genus on which Lindley established his family Roxburghiaceae is 
still recognized, but its accepted name at present is the older one 
Stemona, and hence for the family must be accepted the newer 
name Stemonaceae. 
Rule 2. Over twenty-five names have been proposed ending in 
-aceae and founded upon genera now included in the family Lili- 
aceae. Of these the oldest which fulfills the conditions of Rule 1 
is the one just mentioned, which was proposed by Adanson in 
1763. 
Rule 3. In 1819 De Candolle published the new families which 
_ he called, in French, “ Fumariacées ”’ and Frankeniacées ” (Théor. 
Elém. 244), but they were not published in Latin for two years, 
when S. F. Gray published Frankeniaceae, and De Candolle him- 
