MONOGRAPH OF THE GEJ^US PYllOLA. 
Habitat in orse occidentalis Americae borealis Insula 
Sledge dicta. Nelson V. (v. s. in Herb. Banks.) 
Radios repens. Folia numerosa, subrotunda, membrana- 
cea, obsolete denticulata, reticulatim venosa, duplo minora 
quam P. minore, iitrinque viridia. Petioli sesquipoUicem 
longi, paginam fblioriim duplo excedentes. Scapus erectus, 
gracilis^ filiformis, 5-pollicaris, triqueter. Racemus 3 — 5- 
florus. Pedicelli decurvati, bracteam ovato-oblongam acu- 
tam aequantes. Flores globosi, penduli, lactei, magnitudine 
P. rotundifoliiE. Calycis laciin^z oblongsg, obtusse, petali^ 
fere duplo breviores. Petala orbiculata, reticulatim venosa, 
staminibus longiora. Stamina erectiuscula : Jilamenta gra- 
cilia : anthertE breves, foraminibus sessilibus hiantes. Pis^ 
tillum petalis multo longius : stylus declinatus, apice incur- 
vus : stigma annulatum : disco brevi, 5-lobo. 
The above species has been determined, and named by 
Mr Brown, in the Banksian Herbarium ; from excellent 
specimens collected in Sledge Island, on the north-west 
coast of America, by Mr David Nelson, an industrious 
botanist, who accompanied Captain Cook in his third 
voyage, and who has enriched the Banksian Herbarium 
with numerous specimens of new plants, collected by him in 
those regions. It resembles P. minor in general habit, but 
is much smaller, and possesses characters widely different. 
It cannot be confounded with P. chlorantJia. The long tu- 
bular pores of the antherse of the latter, with its oblong 
petals, and very short lacini^ of its calyx, as well as its co- 
riaceous orbicular retuse leaves, and other enumerated dis- 
tinctive marks, abundantly separate it. 
5. P. elliptica, foliis ellipticis ovatisve membranaceis ser-r 
rulatis petiolo dilatato longioribus, racemo paucifloro, brac- 
teis lanceolato-subulatis apice recurvis, laciniis calycinis 
