60 EIGHTEENTH ANNUAL REPORT ON THE STATE CABINET. 



LACUSTRE, Gray. Lake Cress. 



Muddy banks, streams, lakes. In the St. Lawrence river near Ogdensburgh, 

 Crawe. Gray in Rare plants of Northern N .Y. .jtefferson county, Crawe in 

 herb. Ham. Coll. Oneida lake, where it is very abundant in water two to five 

 feet deep, Gray. Along the shore of Oneida creek near its mouth, growing 

 erect twelve to eighteen inches. Rare. June - August. 



sARMORACM, Fries. Horseradish. Water»side Nasturtium. 



Waste places, walls, along water-courses. Frequent on the banks of the 

 Mohawk. E.xtensively naturalized. May- July. 



DENTARIA, L. Toothworts. Pepper-roots. 



DiPHYLLA, L, Two-leaved Dentaria. 



Moist woods. Common. May. 



MAXIMA, Nuttall. Many-leaved, Great Dentaria. 



Sbady ravines. "Western part of the State of New-York, Nuttall. Water- 

 town, N.Y., Crawe, Gray bot. Abundant in the ravine of Deerfield creek, 

 north of Utica, in deep moist soil. Among the headwaters of this creek on 

 the hills, along wooded rivulets, the flowers are purple and racemes elongated. 

 Leaves three, alternate, distant: root deeply interrupted. Rarely from the 

 axil of the highest leaf a smaller secondary stem springs, having two leaves 

 and a raceme. Rich bottoms of Starch-factory creek, east of Utica: the true 

 form. On the west side, along the border of the gulf, in moist places, a form 

 ' occurs between this species and D.diphylla ; having denticulate rootstalks, 



three alternate remote leaves and white flowers. Both forms usually send up 

 a radical leaf, beside the stem. Rare. Early in May. 



LACINIATA, Muhl. Necklace Pepper-root. Cut-leaved Dentaria. 



Rich shady woods. Frequent. April. 



HETEROPHYLLA, Nuttall. Variahle-leaved Dentaria. 



Deep woods. Near Watertown, Jefferson county, Knieskern. Along bottoms 

 of gulf-sides in Deerfield creek, and woodland ravines on the hills. Leaves 

 two, sometimes four, alternate, remote, deeply divided into narrow lobes, 

 slightly toothed. Root moniliform, frailly connected. Rare. May. 



C ARDAMINE, L. Spring Cresses. 



RHOMBOIDEA, DC. RhomUike-leaved Cardamine. 



Wet meadows and miry places in woods. Abundant. May, June. 



var. PURPUREA, Torr. Purple-Jlowered Cardamine. 



Low grounds along shaded streams. Frequent. April, May. 



PRATENSTS, L. Cvckoo-Jlower. Meadow Cardamine. 



Swamps in the western part of the State, particularly in Oneida county, 

 Torr. Fl. N .Y. Wet meadows and bogs on the flats of the Mohawk. Oriskany 

 swamp, Vasey. Plenty on Hidden lake, Litchfield, Herkimer county. Seneca 

 and Gorham, Ontario county, Sartwell. Rare. April - June. 



HIRSUTA, L. Bitter Cress. Hairy Cardamine. 



Rocks, hillsides, springs, ditches brooks, swamps, muddy places in woods. 



Very common. Throughout the season. 



AEABIS, L. Wall-cresses. Rock-cresses. 



LYRATA, L. Lyrate-root-leaved Rock-cress. 



Clefts of rocks. Abundant on the cliffs at Littlefalls. Trenton falls, Knies- 

 kern. Frequent. April - October. 



DENTATA, Torr. 4" Gr. Dentate-leaved Rock-cress. 



Banks of streams. Near Utica, Gray, Torr. Fl. N.Y. Rare. May. 



