PLANTS AND FERNS. 61 



Astragalus carolinianus, Linn. w-y. Ju. 21 2 — 4 ft. Fred. co. 



west of the Catoctin Mts. 

 Atriplex laciniata, hmn. ^. J. © 15 i. River shores. 

 Atropa physaloides, Linn. iv-b. Jii. 2 — 3 ft. 

 Ay^nx prcecox, F. deB. Dwarf oats. J. © 3 — 10 i. Sandy dry 



woods. 

 A. elatior, Linn. J. ^ 3 ft. Open woods. Arrenatherum 



avenaceum, P. de B, 

 Azalea nudiflora, Linn. Early Honeysuckle, r. M. ij 2 — 6 it. 



Dry woods. 



A. viscosa, Linn. ?p. J. Ij 3 — 5 ft. With the last. 



Baccharis halimifolia, Linn. Groundsel Tree. to. S. Ij Shores of 



the Patapsco. 

 Baptisia tinctoria, Br. Wild Indigo, y. Ju. ^ 2 — 3 ft. Dry woods. 



B. coerulea, Mx. h. Ju. ^ 2 — 4 ft. Banks of the Potomac, Fred. co. 

 Barbarea vulgaris, Br. Water Radish, y. M, ^ i — 2 ft. Wet 



meadows. 

 Batschia canescens, Mx. Puccoon. ?/. Ju. J^ 6 — 10 i. Hills 



around Franklin. 

 Berberis vulgaris, Linn. Barberry, y. M.. ^2 6 ft. Rocky woods. 

 Betvla. populifolia. Ait. White Birch. Ju. h 40 ft. Rocky woods. 

 B. papyr ace a. Ait. Paper Birch. M. \i 50 ft. Woods. 

 B. lenta, Linn. Black Birch. M. Ij 40 — 80 ft. Low woods. 

 B glandulosa, Mx. Scrub Birch. M. Ij 4 — 6 ft. Mountain swamps. 

 BiDENs cernua, Linn. Water Beggar-ticks, y. Au. 1 — 2 ft. Wet 



ditches. 

 B. chrysanthemoides, Mx. Daisy Beggar-ticks, y. Au. © 12 — 18 i. 



Wet. 

 B. frondosa, Linn. Burr Marygold. y. Ju. 3 — 4 ft. Fence 



corners. 

 B. hipinnata^ Linn, y. Ju. @ 2 — 4 ft. Rocky dry woods. 

 BiGNONiA radicans, Linn. Trumpet Creeper, r. ?/. Ju. Jj Rich 



alluvial. 

 Blitum virgatum, Linn. Slender Elite, r. J. 12 i. Fields. 

 Boehmeria cyllndrlca, Willd. False Nettle, g, Ju. 21 1 — 3 ft. 



Damp woods. 

 Botrychium virginicum, Swartz. Rattlesnake Fern. J. 2/ 1 — 2 ft. 



Damp woods. The B. gracile, Ph. evidently a smaller variety of 



this is often found with it. 

 Brachyelytrum erectrum, P. de B. Ju. 21 2 — 3 ft. Rocky hills. 

 Bromus secalinus, Linn. Chess. J. 2 — 3 ft. Corn fields. 

 B. ciliatus, Linn. J. 2/. 2 — 3 ft. River banks. 

 B. pubescens, Muhl. Broom grass. J. 21 2 — 4 ft. Wnr>r?<! 



