discovered in Canada in SS9 
POLYANDRIA POLYGYNIA. 
Ranunculus. 
Calyx pentaphyllus. Petala quinque, intra ungues poro mel- 
lifero. Semina nuda. 
Ranunculus rhomhoideus, foliis pubescentibus, radicalibus longe 
petiolatis rhomboideis integris serratis, caulinis palmatis, flo- 
ribus profunde laciniatis, calyce patente piloso. PL XI. f. 1, 
Hab. In dry sandy fields^ near Lake Simcoe, Upper Ca- 
nada. FI. July. 
Root fasciculato-fibrpse. }Vhole plant rather thickly pubes- 
cent, almost woolly. Stem about 6-8 inches high, angled, 
bearing very few leaves ; those springing from the root are 
almost exactly rhomboid, undivided, crenato-serrate in their 
upper half. About two of the stem-leaves are obovato-palmate, 
tapering down into a foot-stalk ; the uppermost or Jloral leaves 
are sessile, small, and deeply laciniated. Flowers terminal, four 
or five, small, yellow. Calyx with a few longish scattered hairs. 
Petals ovato-oblong, somewhat clawed, standing apart from each 
other. Pericarps forming a nearly spherical fruit, smooth. 
I do not know of any species from which the present one is 
not entirely distinct, although it has a considerable affinity, in its 
general habit, with the Ran. Peruvianas of Decandolle, and of 
Delessert^s leones Selecta^ t. 37. That species, however, has 
the root fibrillose at the summit, the leaves semi-orbicular (not 
rhomboid), the calyx very hairy, and the petals nem-ly orbi- 
cular, 
DIADELPHIA HEXANDRIA. 
CORYDALIS. 
Calyx diphyllus. Corolla ringens. Filamenta duo, membra- 
nacea, singula antheris 3. Capsula siliquosa, polysperma. 
Corydalis canadensis^ scapo nudo simplici paucifioro, foliorum 
laciniis linearibus calcaribus duobus brevibus, stigmate por- 
recto quadrilobo. 
Hab. Near Montreal. 
Whole plant not more than 6-8 inches high, slender. Root 
tuberous and scaly. Leaves glaucous beneath, bipinnate, pin- 
nae pinnatifid, with the segments linear, rather obtuse, simple or 
again divided, especial^ the lower ones. Sfape with a single 
