136 Scientific Intelligence. 
confirmation), stand only as a tribe of that order. We perceive however 
that in Ranunculacee, subtribes appear (probably left by an oversight.) 
and that in ee both swborders and tribes are admitted, the for- 
mer in what we take to be the proper sense of the term, viz.; where 
the type is so far looladie or the characters of such moment, that a rea- 
sonable question ree be raised whether the groups are not entitled 
to ordinal rank; e.g. Fumariee, ma the like. Of course there can be 
no question of suborders in such an order as Cruc = bes 
Following the conspectus of the true genera of each order, excluded 
close of the account of the genus to which they are referred. Abnormal 
forms, or exceptions to the general character of an order, are pata 
specified in paragraphs which follow the ordinal character,—a great help 
to the student. 
Finally, the general sequence of the orders is based upon that 
Candolle, which has become so familiar, prs dat with the Polypetalons 
op a with Ranunculaceae, &c. ; scheme however being re- 
cation of its immediate prodéoomior Sst four years, and this was a 
wonderful performance for a single person. Considering the greater 
amount of botanical research which the present plan requires, and the 
vast accession of materials to be elaborated, we cannot look for an eat- 
lier completion of this formidable undertaking from the ie pears 
of two of the best furnished and most industrious of bota A. 
one in the Sierras near San Juan, the other said to be on Scott’s Moun- 
pees over 200 miles northwest. The plant is very abundant in one small 
locality, on a Creo with southern exposure; where a small stream of 
running water makes a narrow swamp; the soil gravelly ; and with but 
_ little cannot matter. All the older leaves contained many dead i 
but none contained water. . . . . The station is at the altitude of between 
2300 and 2500 feet, where snow falls during winter, but is exposed to 
clear mesionded sun for some months in the summer. I shall f phe | 
seeds to sev pe bona! in the hope that this interesting plant may be 
