50 
IOWA ACADEMY OF SCIENCE 
BROUSSONETIA L’Her. 
308. Broussonetia papyrifera (IX) Vent. Paper Mulberry. Rare but 
established near Riverside. 
MORUS L. 
309. Moras rubra L„ Red Mulberry. Cultivated and sparingly occur- 
ring in woods. 
URTICA (Tourn) L. 
310. TJrtica gracilis Ait. Nettle. Common in waste places. 
LAPORTEA Gaud. 
311. Laportea canadensis (L.) Gaud. Wood Nettle. Scarce in damp 
woodlands. 
PILEA Lindl. 
312. Pilea pumila (L.) Gray. Clear Weed. Common about springs 
and streams in woodlands. 
BOEHMERIA Jacq. 
313. Boehmeria cylindrica (L.) Sw. False Nettle. Scarce in damp 
wooded places. 
PARIETARIA (Tourn) L. 
314. Parietaric » pennsylvanica Muhl. Pellitory. Not uncommon in 
woodlands. 
SANTALACEAE. 
COMANDRA Nutt 
315. Comandra umbellata (L.) Nutt. Bastard Toad Flax. Very com- 
mon in open places and edges of thicket. 
ARISTOLOCHIACEAE. 
AS ARUM (Tourn) L. 
316. Asarum canadense L. Var. reflexum (Bick.) Rob. Reflexed Wild 
Ginger. Not scarce in woods. 
317. Asarum canadense L. Var. acuminatum Ashe. Acuminate Wild 
Ginger. Abundant in woodlands. 
