PLANTS AND FERNS. 57 



^scuLus glabra, Willd. Little Buckeye, y-io. M. ^ 20 ft. 



Cultivated. 

 A. hippocastanum, Linn. Horse Chesnut. y-w. r. J. ij 25 ft. 



Introduced. 

 Agrimonia eupatoria, Linn. Agrimony, w. Ju. 21 2 ft. Dry woods. 

 A. parv [flora, Ait. w. Ju. IJ. 18 i. With the last which it closely 



resembles. 

 Agropyron repens, P. de B. Couch grass. J. 2/ River banks. 

 Agrostemma githago, Linn. Cockle, r. J. © Cornfields. 

 Agrostis vulgaris, S. Red top. J. ^ 18 i. 

 A. aZ5a, Linn. White top, Bonnet grass. J. ^ 18 i, 

 A. lateriflora, Mx. Au. 11 2 ft. 

 A. tenuijlora, Muhl. Ju. 2^ 3 ft. 

 A. virginica, Linn. Aug. ^ 1 ft. 

 AiRA ^exMosa, Linn. Hair grass. J. ^ 18 i. 

 ALETRis/annosa, Linn. False Star grass, y-w. % 2 ft. 

 Alisjvia ^Zania^o, Linn, Water Plantain, xo. Ju. % 1 — 2 ft. In 



water. 

 Allium canadense, Linn. Meadow Garlic, r-w. M. 1/. 18 i. 



Meadows. 

 A. vineale, Linn. Field Garlic, r-z:?. J. 2/ 18 i. Meadows. 

 A. ceniMwrn, Roth. Nodding Garlic, r-w. Ju. 2/ 18 in. On the 



limestone rocks along the Monocacy. 

 Alnus serrulata.1 Willd. Alder, r-g. Ap. Ij 15 ft. Swamps. 

 A. glutinosa, WiWd. Ap. Ij 10 ft. Swamps. 

 Alopecurus pratensis, Linn. Foxtail-grass. J. 2/ 2 ft. 

 A. geniculatus, Linn. Floating Foxtail-grass. Ju. 2/ 18 i. Wet 



meadows. 

 Amaranthus aZiws, Linn. g-w. Ju. <v) is i. 

 A. retrqflexus, Linn. ^-w>. Au. Road sides. 

 A. spinosus, Linn. ^-i^. Au. © Road sides. 

 A. lividus, Linn. g'. Ju. Road sides. 



Ambrosia trifida, Linn Tall Hogweed. g-y. Au. 4 — 8 ft. 

 A. elatior, Linn. Hogweed. ^-j/. Ju. (v) 1 — 3 ft. Old fields. 

 Ampelopsis quinquefolia, Mx. Creeper, g. Ju. \ Climbing. 

 Amphicarpa monoica, Ell. b-w. Ju. Twining. Damp thickets. 

 Anagallis arvensis, Linn. Scarlet Pimpernel, r. J. © 6 i. 

 Andromeda mariana, Linn. w. J. \i 3 — 6 ft. Open woods. 

 A. j9oZ(/bZta, Linn. r-w. M.. 13 18 i. Sphagnous swamps. 

 A. arhorea, Linn. Sorrel tree. w. J. Tj 40 ft. Eastern Shore. 

 A. paniculata, Ph. White Bush. w. J. }z 1 — S ft. Dry woods. 

 A. racemosa, Linn. w. J. ^2 2 ft. Swamps. 

 A. calyculata, Linn. ic. M. h 2 ft. Swamps. 

 8 



