Rhus 



Aquifoliaceae 



651 



o ~ 1o 

 Map 1353 



Rhus aromatica A 



o "30 



Map 1354 



Ilex decidua Walt 



and some of the forms have been named. The margins of the leaflets vary 

 from entire to serrate or somewhat lobed. The leaflets are acute but we 

 have one specimen with a rounded apex. The fruit is subglobose but we 

 have one specimen with elliptic fruit. 

 N. S. to B. C, southw. to Fla. and Mex. 



6a. Rhus radicans L. var. littoralis (Mearns) Deam, comb. nov. (Rhus 

 littoralis Mearns, Proc. Biol. Soc. Wash. 15: 148. 1902.) Map 1352. This 

 is an erect form with hairy, papillose fruit and is restricted to the Ohio 

 River Counties. 



Maine to Va., westw. to Okla. 



7. Rhus aromatica Ait. (Rhus canadensis Marsh.) Fragrant Sumac. 

 Map 1353. Infrequent throughout the state except on the dunes of Lake 

 and Porter Counties where it is frequent. Found on the dunes about Lake 

 Michigan, on the gravelly bank of the St. Joseph River, on rocky or gravelly 

 banks and bluffs of the Wabash River and its tributaries, and in southern 

 Indiana on bluffs and slopes of streams. 



Que. to Nebr., southw. to Fla. and Tex. 



8. Rhus triloba ta Nutt. var. arenaria (Greene) Barkley. (Ann. Mis- 

 souri Bot. Gard. 24: 408. 1937.) This shrub was formerly frequent on the 

 low dunes near Lake Michigan in Lake County but is infrequent in Porter 

 County. The building of Gary, Indiana Harbor, and Whiting has covered 

 most of its original habitat. 



Lake and Porter Counties in Ind. and in adjacent 111. 



157. AQUIFOLIACEAE Lowe. Holly Family 



Leaves never entire; petals united at the base; pedicels of fruit less than 1 cm long. 



4614. Ilex, p. 652. 



Leaves entire, rarely with a few teeth; petals not united; pedicels of fruit more than 



1 cm long 4615. Nemopanthus, p. 653. 



