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PHYSICAL GEOGRAPHY. 



Caulophyllum thalictroides. Cohosh. 

 Podophyllum peltatum. May-apple. 



WATER-LILY FAMILY. 



Brasenia peltata. Water-shield. 

 Nymphaea odorata. White water-lily. * 



Nuphar advena. Yellow water-lily.* ; f M 

 *N. Kalmiana. 



PITCHER-PLANT FAMILY. 



Sarracenia purpurea. 



< Side-saddle flower. , . 

 I Pitcher-plant. 



POPPY FAMILY. 



Papaver somniferum. Poppy. 

 Chelidonium majtis. 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. Armor acia. Horse-radish. 



Dentaria diphylla. Pepper-root. 

 D. laciniata. 



Cardamine bellidifolia. . . . M 

 C. hirsuta. Bitter Cress. ... * 



Arabis laevigata. Rock Cress. 



Bar bar ea vulgar is. Yellow Rocket. 

 (Native in north-western U. S.) 



Sisymbrium officinale. Hedge Mustard. * 



Brassica nigra. Black Mustard. 



B. campestris. Cale. . . * 



Subularia aquatica. 



Echo lake, Franconia ; Gilmanton. 



Capsella Bursa-pastoris. Shepherd's 

 Purse. ......* 



Lepidium Virginicum. Wild Pepper - 

 grass ....... *A 



(Introduced from southern U. S.) 



Cakile Americana. Sea-rocket. . . S 



Raphanus Raphanistrum. 



VIOLET FAMILY. 



Viola rotundifolia ..... C 



V. lanceolata. 



V. blanda. White violet. ... * 



V. palustris ...... M 



V. Selkirkii. 



V. cucullata. Common blue violet. . * 



V. sagittata. 



V. canina ; var. sylvestris. . * ; |M 



V. Canadensis. * .... C 



V. pubescens. Yellow violet. . . * 

 V. tricolor. Pansy. 



V. renifolia, Gray. 



Hanover; a new species. 



ROCK-ROSE FAMILY. 



Helianthemum Canadense. . . A 



Hudsonia ericoides ..... S 

 Conway, Concord. 



H. tomentosa ...... 6" 



Lechea major ...... A 



L. thymifolia ...... S 



L. minor. Pinweed ..... *A 



SUNDEW FAMILY. 



Drosera rotundifolia. 

 D. longifolia. Sundew. 



ST. JOHN'S-WORT FAMILY. 



Hypericum pyramidatum. 

 Charlestown. 



H. ellipticum. 



H. perforation. Common St. Johrfs- 

 wort ....... * 



H. corymbosum. .... * 

 H. mutilum. * 



* On Tuckerman's authority. 



