186 EIGHTEENTH ANNUAL REPORT ON THE STATE CABINET. 



After Thlaspi ARVENSE, p. 62, the species : 



CAKILE, Tournefort. Sea-rocket, 



Americana, Nuttall. American Cakile. 



Sandy beaches. Frequent on the shore of Lake Ontario, from a few miles 



north of Oswego, to Sodus point, Wayne county, where it is in force, and 



Braddock's bay, Monroe county. July - October. 



To Parnassia caroliniana, p. 64, the stations : 



Abounding in an extensive swamp among the hills of Warren, near Jordan- 

 ville, south Herkimer county: the only station that has been observed south 

 of the Mohawk valley. 



Before Medicago LUPULINA, p. 72, the species : 



SAT IV A. L. Lucerne. Purple, Sown Medicago. 



Gravelly banks, borders of grass-lands. Deerfield creek, in meadows on the 

 flats and on sloping bases of the gulf-sides. scarce. June, July. 



After Phaseolis perennis, p. 74, the species : 



DIVERSIFOLITJS, Persoon. Varied-leaved Phaseolus. 



Shore of Lake Ontario between Irondequoit hay and Charlotte mouth of 

 Genesee river, Monroe county, on a low sandy bar thrown up by the water, 

 at the shady base of a ridge-side and along the end of a marsh near its outlet. 

 A small dwarfed state, only a foot and a half long, prostrate, having entire 

 dark green leaves, peduncles shortened, no longer than the petioles, borne in 

 the axils throughout the length of the stem, all bearing large deep-purple 

 flowers with keels curving to one side : a singular and very pretty form. 



Rare. August, September. 



To Apios tuberosa, the habitat : 



Common on the borders of marshes northeastward of Oswego, and abundant 

 westward near the Lake shore. 



To Cassia marilandica, p. 75, the station : 



Banks and hillsides west of Owasco lake, Cayuga county. 



After Potentilla norvegica, p. 77, the species : 



PARadoxa, Nuttall. Strange-fruited Potentilla. 



Decumbent at the base, pubescent; leaves pinnate ; leaflets 7-9, obovate- 

 oblong, incised, the upper ones confluent ; stipules ovate, mostly entire ; 

 peduncles ( alar ) solitary, recurved in Iruit ; calyx-segments all nearly 

 equal, acute, about the length of the obovate petals ; receptacle villous ; 

 achenia striate, 2-lobed, the lower portion (the enlarged base or insertion 

 filled with starch) as large as the proper carpel : Nuttall, mss. in Torr. 

 Sf Gray Fl. 



Specimens of ordinary size have single erect stems cymosely branching ; 

 but the largest plants send out two to five in addition, which are prostrate 

 and spreading. Leaves all radical. Flowers small. Appendages to the 

 achenia quite conspicuous. 



Sandy shores. Beach of Lake Ontario at Braddock's bay, Monroe county; 

 abundant on the point between the bay and the lake. 



Rare. July - September. 



Before Lythrum salicaria, p. 80, the species : 



AMMANNIA, Houston. Ammannia. 



humilis, Michaux. Low Ammannia. 



Bog-borders. Around sandy pools and banks of rivulets in the Pine barrens 

 between Albany and Schenectady, near the Central railroad and Centre sta- 

 tion. Rare. July, August. 



