1 82 VERMONT FLORA. 



N. *ArmoracIA, Fries. Armoracia rusticana, Rupp. 

 Horseradish. Common about old gardens and 

 near dwellings where it has escaped from cultiva- 

 tion; June. 



Dentaria DIPHYLLA, L. ^'ppcr-voot. River banks; 

 rare; last of May. 



D. .maxima, Nutt. The only specimens of this rare 

 species that have come under my observation are 

 a half dozen that I discovered in a ravine near Bur- 

 lington; June. 



D. LAt:i>^lATA, Muhl \Vc|ods and interval meadows; 

 rather common; May. 



Cardamine rhomboidea, DC. Bitler Cress. Moist 

 ground ; not common ; May. 



C. ROTUNDIFOLIA, Michx. Water Cress. Reported 

 as found in Vermont by Dr. Robbins. 



C. PRATEXSis, L. Cite Leo- Floioer. Occurs chiefly 

 in the northern part of the state; May. 



C. IIIRSUTA, L. Covimon Cress. Common in wet 

 places; last of May. 



Arabls lvkata, L. Not common; May. 



A. IIIRSUTA, Scop. Not common; last of May. 



A. L.KVKJATA, DC. Not common; rocky ground; 

 June. 



A. Caxaukxms, L. Sickle-pod. Rocks near Win- 

 ooski Falls, Colchester; Prof J. Torrey; June. 



A. perfoliata, Lam. Rocky ground; June; C. C. Frost. 



Bardarea vulgaris, R. Br. Winter Cress. Mead- 

 ows ; rather common ; last of May. 



Erysimum ciieiraxtiioides, L. False Wall- 

 Flozuer. Brattleborough ; C. C. Frost. 



Sisymbrium *officixale, Scop. Common along 

 roadsides; June. 



S. Tiialiaxum, Gaud. Arabis Thaliana, L. Mouse- 

 ear Cress. Rocky and sandy places; A Wood. 



