32 NEW YORK STATE MUSEUM 



Polygonum Hydropiper L. 

 Rumex brittanicus L. 

 Iris versicolor L. 

 Lysimachia thrysiflora L. 

 Utricularia macorrhiza LeConte 

 Scutellaria galericulata L. 

 Typha angustifolia L. 

 Spirodella polyrhiza (L.) Schleid. 

 Sparganium eurycarpum Engeltn. 

 Alisma subcordatum Raf. 



Cornus Baileyi Coulter & Evans 

 Thickets on the sand dunes along Lake Ontario near Woodville. 

 House 8460, June 24, 1921. 



Lathyrus palustris L. 



Common in the meadows and marshes along the shore of Lake 

 Ontario, near Woodville. House 81/2, June 23-24, 192 1. 



L. myrtifolius Muhl. (no. 8173) with its somewhat glaucous 

 foliage, practically wingless stems and smaller flowers, stands out 

 with great distinctness, and no intermediate forms were observed. 

 InL. myrtifolius, the lobes of the calyx are always shorter 

 than the calyx tube, the three lower lobes being triangular-ovate to 

 triangular-lanceolate, acuminate and tapering evenly from the base 

 to the apex. In L. palustris, the three lower calyx lobes are 

 equal to or longer than the tube and broadly lanceolate in shape, 

 often tinged with purple. All parts of the flower are uniformly 

 larger than in L. myrtifolius which seemingly can not be 

 regarded as a variety ofL. palustris. 



In L. palustris var. linearifolius Ser. (no. 8174), the calyx 

 lobes usually average shorter in length and approach the 

 shape of those in L. myrtifolius, but the narrow leaflets 

 without any glaucous indument, and the winged stems relates it 

 closely to L. palustris, and intermediate forms are not rare. 



In the specimens here collected the pods of the var. lineari- 

 folius are taper pointed in nearly a straight line from the dorsal 

 surture of the pod, while inL. palustris, the pods taper about 

 evenly from both the dorsal and ventral surtures to an elongated 

 tip. Further observations in other localities will be necessary to 

 determine whether this is a character of value or not. 



Comarum palustre L., var. villosum Pers. 



(Potentilla palustris var. villosa Lehm.) 



Marshes along the shore of Lake Ontario, near Woodville. House 

 8196, June 23, 1 92 1. 



The very dense, closely appressed silky indument of the whole 

 plant excepting the petals is very conspicuous and renders the 

 varietal name rather inappropriate. The petioles and peduncles are 

 copiously glandular as in the typical form. 



