396 



PHYSICAL GEOGRAPHY. 



Caulophyllum thalictroides. Cohosh. 

 Podophyllum peltatum. May-apple. 



WATER-LILY FAMILY. 



Brasenia peltata. Water-shield. 

 Nymphaea odorata. White water-lily. 



Cap sella Eursa-pastoris. Shepherd's 

 Purse 



Lepidium Virginicum. Wild Pepper- 

 grass. ...... 



(Introduced from southern U. S.) 



Cakile Americana. Sea-rocket. . 



*A 

 S 



Nuphar advena. Yellow water-lily.* ; |M Raphamis Raphanistrum.\ l ^ l J^ Radlsh ' 



"A 



*N. Kalmiana. 



PITCHER-PLANT FAMILY. 



Sarracenia purpurea. 



( Side-saddle flower. 

 I Pitcher-plant. 



POPPY FAMILY. 



Papaver somniferum. Poppy. 

 Chelidonium majus. Celandine. 

 Sanguinaria Canadensis. Blood-root. A 



FUMITORY FAMILY. 



Dicentra Cucullaria. 

 D. Canadensis. 



Corydalis glauca A 



Fumaria officinalis. Fumitory. 



MUSTARD FAMILY. 



Nasturtium palustre. Marsh Cress. . * 



N. sylvestre. 



N. Armoracia. Horse-radish. 



Dentaria diphylla. Pepper-root. 

 D. laciniata. 



Cardamine bellidifolia. 

 C. hirsuta. Bitter Cress. 



M 

 * 



Arabis laevigata. 



Rock Cress. 



Barbarea vulgaris. Yellow Rocket. 

 (Native in north-western U. S.) 



Sisymbrium officinale. Hedge Mustard. * 



Br as ska nigra. Black Mustard. 



B. campestris. Cale. . . . * 



Subularia aquatica. 



Echo lake, Franconia ; Gilmanton. 



VIOLET FAMILY. 



Viola rotundifolia. 



V. lanceolata. 



V. blanda. White violet. . 



V. palustris 



V. Selkirkii. 



V. cucullata. Common blue violet. 



V. sagittata. 



V. canina ; var. sylvestris. . * 



V. Canadensis. . 



V. pubescens. Yellow violet. . 



V. tricolor. Pansy. 



V. renifolia, Gray. 



Hanover ; a new species. 



ROCK-ROSE FAMILY. 



Helianthemum Canadense. 



Hudsonia ericoides. . 

 Conway, Concord. 



H. tomentosa 



Lechea major. . 

 L. thymifolia. . 

 L. minor. Pinweed 



SUNDEW FAMILY. 



Drosera rotundifolia. 



D. longifolia. Sundew. 



ST. john's-wort family. 



Hypericum pyramidatum. 

 Charlestown. 



H. ellipticum. 



H. perforatum. Common St. yohiCs- 

 ivort. ...... 



H. corymb osum. .... 



H. mutilum. ..... 



M 



fM 

 . C 



A 

 S 



A 

 S 



*A 



* On Tuckerman's authority. 



