712 



Araliaceae 



Hippuris 



50 



Map 1505 



Pros"erpinaca palustris 

 var. crebra Fern. & Grisc. 



~W 



Map 1507 



Aralia nudicaulis L. 



1. Proserpinaca palustris L. var. amblyogona Fern. (Rhodora 11: 120. 

 1909.) Map 1504. This is a form with the angles of the fruit rounded. 

 My Kosciusko County specimen might be referred to this variety although 

 it is not well marked. Fernald cited O. E. Lansing's no. 2509 from a ditch, 

 Roby, Lake County, Indiana as the type. 



Lake Huron, Ont., Ind., and Mo. 



la. Proserpinaca palustris var. crebra Fern. & Grisc. (Rhodora 37: 

 177-178. 1935.) (Proserpinaca palustris in part, of Gray, Man., ed. 7 

 and in part, of Britton and Brown, Illus. Flora, ed. 2.) Mermaid Weed. 

 Map 1505. All reports for Proserpinaca palustris L. should be referred 

 to this variety or the preceding one. In the low sedge borders of lakes, 

 in swamps, dried-up ponds and sloughs, and cypress swamps. Infrequent 

 to rare. 



N. S. to Wis., southw. to Ga. and Okla. 



5837. HIPPURIS L. 



1. Hippuris vulgaris L. Mare's Tail. Map 1506. Our only specimen is 

 one collected by E. J. Hill, July 5, 1880 in a millpond near Otis, La Porte 

 County. This specimen is in the herbarium of the University of Illinois. 

 The species has been reported from Kosciusko and Lake Counties and from 

 the Lower Wabash Valley by Schneck, who says it is "rare in ponds and 

 streams." 



Lab. to Alaska, southw. to N. S., Maine, Vt., N. Y., Ind., 111., Nebr., 

 N. Mex. and Calif. ; also in Eurasia and S. A. 



227. ARALIACEAE Vent. Ginseng Family 



[.eaves alternate, compound, the ultimate divisions pinnate; inflorescence compound; 



carpels 5; fruit black 5881. Aralia, p. 713. 



Leaves 3 (rarely 4) in a whorl, palmately 3-7-foliolate; inflorescence simple; carpels 



2 or 3 ; fruit red or yellowish 5883. Panax, p. 714 



