MONOGRAPH OF THE GENUS PYROLA. 231 
Radian repeiis. Folia pluria, ssepius reniformia, coriacea, 
glabra, lucida, repando-crenata, Petioli S-S-unciales, dila- 
tati, margine membranacei, pagina foliorum duplo longiores, 
^capi palmares, acute triquetri v. spithamei, squamis paucis 
scariosis con volutis instruct!. ^fl!C<?mw«y elongatus,multiflorus. 
Pedicelli remoti, undique versi. Bractece lanceolatae, acu- 
minatse, pedicellorum longitudine. Flores globosi, cernui, 
albo-virentes, magnitudine P. rotundi/blia. Calycis lacmice 
ovatae, acutse, appress^. Petala orbiculata. Stamina ad- 
scendentia, petala aequantia: Jilamenta glabra, alba, basi 
dilatata : antJiercE flavse, basi vix fissse • forammibiis sessi- 
libus. Pistillum starninibus duplo longius : stylus declina- 
tus : apice adscendens, clavatus, annula cinctus. Stigmatis 
discum elongatum 5-dentatom. 
The leaves of this species appear to me to be subject to 
some slight variations ; but in the true state they are of a 
reniform shape, nearly about the size and form of those of 
Asarum europceum : this remarkable character, if constant, 
would alone have been sufficient to distinguish it from 
every other species, The plant itself, is about the size of 
P. rotundjfolia, which it greatly resembles in the figure and 
disposition of its flowers, which are of a greenish-white 
colour. The above description is taken from very fine spe- 
cimens, collected in Upper Canada by the late Mr Pursh, 
author of the Flora of North America, during his travels 
in 1815. It is but justice to his memory, as a botanist, to 
state, that, if he had lived, he intended to publish a Flora 
of Canada, for which he had collected ample materials : 
these are now in the possession of A. B. Lambert, Esq. 
Mr Nut TALL, in his little work, has erroneously confound- 
ed it with the following species. 
S. P. chlorantha^ foliig orbiculatis retusis obsolete crenu- 
