On Plants of the North-West. 63 
Kalmia glauca Jit. Willd. With the preceding. _ 
Pyrola rotundifolia LZ. Savannah portage, July 10th. 
Dieynta, 
Mitella diphylla L. Shores of Lake Huron May 10th. 
Tiarella cordifolia L.  (Paa-sewung.) Root mucilagi- 
nous. Petals lanceolate acute, attenuated at the base, 
three-nerved. Shores of Lake Huron. 3 
PENTAGYNIA. 
Cerastium uw. sp. Cespitose, pubescent. Leaves lan- 
eeolate-oblong erect, acute shorter than the joints : flowers 
are long terminal peduncles; leaflets of the calyx oblong ; 
corolla obovate two-cleft twice the length of the calyx. San- 
dusky, May 8th. About eight inches high. 
This species is allied to C. termafolium of Pursu, but the 
leaves are much broader, and the calyx obtuse. The pe- 
tals are only twice instead of thrice the length of the calyx. 
With the C. glutinosum of Nuttall, it has also much affinity, 
but that plant is much larger and viscous, and the capsule is 
double the length calyx, while in our plant it appears to be 
oblong and shorter than the calyx. 
ICOSANDRIA. 
Monogeynia. 
Prunus virginiana L. Willd. 2 Gores Of Take Twn: 
Cerasus virginiana Mx. 
Depressa Ph. With the preceding. 
Penvacynta. 
Crategus pyrifola Ait. Willd. (Wild Apple.) Detroit, 
May 30th. 
— punctata At. Willd. With the. preceding. 
Pyrus ovalis Willd. arb. , On the river St. Ma- 
Mespilus Amebanchien. Wax. § ry’s 
