ts) 
A. phlogifolius, Willd. 6. Aug. 2f. 18 in.—2 ft. Dry hills in open 
woods. 
A. undulatus, Linn. 6 & y. Sept. 2. 2—3 ft. Dry woods and bushy 
pastures. 
A. paniculatus, Aiton. w. y. Aug.—Oct. 2f. 2—4 ft. Dry situ- 
ations. The white rays change to blue, and the yellow disk to 
purple or brown. 
. cordifolius, Linn. w. p. Sept.—Nov. 2{. 2—3 ft. Woods. 
. corymbosus, Aiton. w. July, Aug. 2. 2 ft. Ravines. 
. puniceus, Linn. b-p. Aug.—Nov. 2{. 4—7 ft. Damp situations. 
. conyzoides, Willd, w. July. 2f. 18 in.—2 ft. Woods and copses. 
. miser, Linn. w. Aug.—Nov. 2f. 1—3 ft. Fields. 
A. eminens, Willd. 7-w. Sept.—Nov. 2{. 2—4 ft. Low grounds. 
AstraGaLus Canadensis, Linn. w-y. Milk Vetch. June. 2f. 2 ft. 
River banks. 
ATRAGENE Americana, Linn. p. May. June. 5. Stem climbing. 
Azatea nudiflora, Linn. Honeysuckle. Pinxter Blomachee. 7. May. 
b. 2—6 ft. Dry woods. 
Baptisia tinctoria, R. Br. Wild Indigo. y. July, Aug. 2f. 2—8 ft. 
Dry woody hills. 
BarBarea vulgaris, R. Br. Water Radish. Water Rocket. y. May. 
2r- 12—18 in. Banks of rivers. Wet lands. 
Betuta populifolia, Willd. White Birch. Poplar Birch. May. 6. 
30—40 ft. Rocky woods and swamps. 
B. excelsa, Aiton. Yellow Birch. May. 5. 40—80 ft. Low grounds, 
woods. 
B. papyracea, Aiton. Paper Birch. Canoe Birch. May. 5. 40—60 
ft. Woods. 
B. denta, Linn. Spicy Birch. Black Birch. May. 5. 50—80 ft. Low 
grounds and woods. 
B. glandulosa? Scrub Birch. May. 5. 2—8 ft. 
Bivens cernua. Water Beggar-ticks. y. August, Sept. %. 1—2 ft. 
Wet meadows, about ponds and ditches. 
B. chrysanthemoides, Mich. Daisy Beggar-ticks, y. July—Sept. #%. 
Wet. 
B. frondosa, Linn. Burr Marygold. y. Aug. Sept. %. 3—4 ft. 
Woods and fields. 
B. Beckii, Torrey. Water Marygold. July, Aug. y. 2f. Pond near 
Schenectady. 
Burtum virgatum, Linn. Slender Blite. r. June—Sept. 6—12 in. 
Fields and roadsides. 
> > > > Pp 
