OF NORTH AMERICA, 
01 
&c. A very small sp. well described by Nut- 
tal, creeping pedal, found from New England 
to Ohio. Almost a peculiar Genus by the shape 
of calix, but petals as in E. muricatus — Thus I 
have nearly rectified this G. and 8 sp. of it. 
My N. sp. are distinct from E. verrucosus and 
latifolius of Europe which I have. 
Natural family of SPIRADIA. 
The Linnean Genus Spire a has been kept 
nearly entire by Decandole but divided into 
subgenera, that differ so much in habit and 
characters that they ought to become Genera. 
Filipendula of Tournefort Aruncus of Adanson, 
Gillenia of Mench, now generaly adopted, and 
Purshia of Decand. are certainly peculiar Gen- 
era, as well as my G. Thecanisia, Epicostorus 
& c. As early as 1815 I formed a new family 
the Spirades in my Analysis of Nature page 
173 with these Genera, adding Rhodalix, Ba 
silima, Drymopogon; the Genera Tigarea, Neil 
lia ? Tetracera, Suriana, 4* c probably belong 
to it. This natural family is quite distinct from 
the Poterides and Senticoses by the fruit cap- 
sular with lateral styles and opening valvular. 
Gillenia , Ar uncus, Thecanisia , Filipendula 
that are not frutescent will be illustrated else- 
where and in my fl. tellur. I now propose to re- 
vise the shrubby Genera chiefly, which are Spi- 
rea, Physocarpa, Basilima, Schizonotus and 
Epicostorus. The Monographs of Spirea by 
Smith in Rees, Poiret in Cych and Scringe in 
Decandole are by no means perfect even as to 
species and synonyms and 1 shall rectify them. 
I have verified many kinds by the figures of 
Pallas in flora Rossica, which had not always 
been properly applied and quoted. 
