oe 
Prunus depressa, Pursh. May. >. 
Preris aqualina? Linn. July. 2f. Fern 2 ft. high. Woods. An- 
thelmintic. 
P. atropurpurea, Linn. July. 2¢. Fern 6—10 in. Rocks. 
Prerospora Andromeda, Nutt. July. #%. 18—24in. Leafless. 
Plant yellowish brown or purple. Woods west of Troy. 
PycNANTHEMUM incanum, Mich. Wild Basil. w-r. 2f. July—Sept. 
2 ft. Hills south east of Lansingburgh, in woods. 
P. linifolium, Pursh. w. July, Aug. 
P. aristatun? Mich. ‘The different species are aromatic, diapho- 
retic, and stomachic; allied to Mentha. 
Pyroxa rotundifolia, Linn. w. July. 2{. 6—12 in. Woods. 
P. elliptica, Nutt. w. July. 2f. 6—10 in. Woods. 
P. asarifolia, Mich. g-w. July. 2f. 6—8 in. Dry woods. 
P. secunda, Linn. g-w. July. 2f. 3—6 in. Woods. 
P. uniflora, Linn. w. July. 2... 2—8 in. In damp woods, on the 
margin of a pond, 4 miles north east of Troy. Rare. 
Pyrus coronaria, Linn. Crab Apple. w-r. May. b. Tree 15—20 ft. 
Quercus tinctoria, Bartram. Quercitron Oak. May. 5. 60—70 ft. 
Woods. Bark used for dyeing yellow. 
Q. rubra, Linn. Red Oak. May. >. Large tree. Woods. 
Q. palustris, Mich. Pin Oak. May. 6. 40—60 ft. Swampy grounds. 
Q. Bannisteri, Mich. Shrub or Scrub Oak. May. b. 4—8 ft. Dry 
hills and barrens; acorns abundant. 
Q. alba, Linn. White Oak. May. 2. Large tree. Woods. 
Q. Chinquapin, Mich. Dwarf Chestnut Oak. May. 6. Shrub 3— 
4 ft. Acorns abundant. Barren situations. 
Q. montana, Willd. Rock Oak. Chestnut Oak. May. 5. 30—40 ft. 
Rocky situations. 
Q. bicolor, Willd. Swamp White Oak. May. 5. Large tree. Low 
grounds and swamps. 
Q. discolor? Aiton. Probably others undetermined. Bark of the 
different species astringent. 
Queria Canadensis, Linn. Fork Chickweed. w. July, Aug. %. 6 
—12in. Dry situations, banks of ravines, &c. Slender and 
branching. 
Ranvucutvus flammula, Linn. Small Spear-wort. y. July. 27. 12— 
18 in. Wet. 
R. reptans, Linn. y. July, Aug. 2f. Small, creeping. 
R. adortivus, Linn. y. July, Aug. 2f. 12—16 in. Damp situations. 
R. sceleratus, Linn. Celery Crowfoot. y. June—Aug. 2. 12— 
18 in. Wet. 
