94 History of Hingham. 



Arabis, L. 



Canadensis, L. Sickle-pod. 

 Barbarea, R. Br. 



vulgaris, R. Br. Winter Cress. 



Sisymbrium, Tourn. 



officinale, Scop. Hedge Mustard. 



Brassica, Tourn. 



nigra, Koch. Black Mustard. 

 campestris, L. Rutabaga. 



Capsella, Medic. 



Bursa-pastoris, Mcench. Shepberd's Purse. 

 Thlaspi, Tourn. 



arvense, L. Field Penny Cress. Rare. 

 Lepidium, Tourn. 



Virginicum, L. Peppergrass. 



rudera/e, L. 



campestre, L. Field Pepper Grass. Rare. 

 Cakile, Tourn. 



Americana, Nutt. Sea-Rocket. 

 Raphanus, Tourn. 



Raphanistrum, L. Wild Radisb. 



8. cistace^. (Rock-Rose Family.) 



Low, shrubby plants with regular flowers, possessed of no 

 marked properties. 



Helianthemum, Tourn. 



Canadense, Mx. Rock-rose. Frost Weed. 



Lechea, Kalm. 



major, L. Pin Weed. 



thymifolia, Mx. 



minor, L. 



minor, L., var. maritima, Gray in herb. 



tenuil'olia, Mx. 



9. violace^s. (Violet Family.) 



A family well known by the profusion of flowers of several 

 species found everywhere within the town. Only one genus is 

 represented in Hingham, — the Viola. All its species here are 

 stemless, with a single exception. The Pansy and the great 

 Purple Violet of the gardens belong to this order. The roots 

 generally possess an acrid, sometimes an emetic property, which 

 has led to their use in medicine. 



Viola, Tourn. 



lanceolata, L. Lance-leaved Violet. 



primulasfolia, L. Primrose-leaved Violet. 



blanda, Willd. Sweet White Violet. 



palmata, L. Common Blue Violet. 



palmata, L., var. eucullata, Gray. Rolled leafed Violet. 



sa^ittata, Ait. Arrovv-h-aved Violet. 



