PLANTS AND FERNS. 59 



Aralia spmosa, Linn. Shot Bush. y-w. Au, h 10 — 15 ft. Rocky 

 woods. 



A. racemosa, Linn. Spikenard, tv. J. 2/ 3 ft. Shaded banks. 



A. nudicaulis, hinn. Wild Sarsaparilla. iv. M. 1J. 18 i. Woods. 



Arctium lappa, Linn. Burdock, r. Au. 11 Introduced. 



Arenaria serpylifolia, Linn. xo. J. © 6 i. Sandy fields, 



A. stricta^Mx. w. M. If. 6— 12 i. Rocky banks. 



A, lateriflora, Linn. lo. J. 11 6 i. Wet meadows. 



A. peploides, Linn. r-w. Ju. 21 10 in. Shores of the Chesapeake. 



A. canadensis, P. r- J. © 3 — S i. Brackish meadows. Probably 

 synonymous with A. rubra Linn. 



Argemone mexicana, Linn. Prickly Poppy, y. Ju. @ 12 i. Rocky 

 banks of Potomac in Fred. Co. 



Ari s TiDA dic/to/oma, Mx. Beard grass. Au. 1}. 12 i. Sandy fields. 



A. purpurascens, Foir. S. ^ 18 i. Sandy fields. 



A. gracilis, E\\. S. 21 IS i. Approaches the A. dicAofo/raa in cha- 

 racters. 



Aristolochia serpenlaria, Linn. p. J. 11 12 i. Rich woods. 



Arnica nudicaulis, N. Leopard's Bane. y. Ju. 2/ 2 — 3 ft. Sandy 

 woods. 



Aronia arhutifolia. Ell. Red Choke Berry, w-r. M. Ij 3 — 6 ft. 

 Swamps. 



A. hotryapium, P. June Berry, w. Ap, Ij 8^ — 30 ft. Woods. 



A. melanocarpa, Tor. 70. M. \i 3 — 6 ft. Swamps. 



Artemisia canadensis, Mx. Wild Wormwood, to-y. Au. ;^ 3 ft. 



Arum dracontium, Linn, Green Dragon, g. J. 2/ 18 i. Low 

 banks of streams. 



A. atrorubens. Ait. Brown Dragon. M. if Wet woods. 



A. triphyllum, Linn. Indian Turnip, p-g. to. M. 11 I — 3 ft. Wet 

 woods. 



Arundo canadensis, Mx. Reed grass. Au. If. 3 — 4 ft. Low grounds. 



A. coarctata. Tor. Ju, 2/ 8 — 5 ft. With the last often in water. 



AsARUM canacfense, Linn. Wild Ginger, g-p. M. if 6 — 12 i. Rich 

 woods. Root strongly aromatic. 



Asclepias syriaca, Linn. Milkweed, w-p. Ju. if 3 — 5 ft. Road- 

 sides and waste lots. 



A. obiusifolia, Mx. p. J. if 2 ft. Open woods. 



A. phytolaccoides, Vh. w-g. Ju. If 2 — 4 ft. Shaded banks, 



A. purpurascens, Linn. p. Ju. if 2 ft. Rocky woods. 



A. variegata, Linn. r. r-zo. to. Ju. ;2;[ 1 — 2 ft. Open woods. 



A. incarnata, Linn. r. Ju. ^ 2 — 4 ft. Banks of streams and wet 

 meadows. 



A. quadrifolia, Jac. p-w. M. if 1 — 2 ft. Open rocky woods. 



