HITCHCOCK — PLANTS OF AMES, IOWA. ^17 



MoRUS RUBRA, L. Spec. 



Lowland woods ; scarce. 



Bottom- land of Skunk river; Squaw creuk, and woods near cemetery (Prof. 

 Pammel). 



Urtica gracilis, Ait. Hort. Ke\v.— U. dloica, Ait., var. procera, 

 Wedd. in DC. Prod. xvi. i. 



Lowland woods and waste places; infrequent, 

 Laportea Canadensis, (L.) Gmel. Bot. Voy. Urau. \%'2Q.— Urtica 

 Canadensis, L. Spec. 



Low woods; frequent. 

 PiLEA PUMiLA, (L.) Gray, Man. 1st ed.— Urtica pumila, L. Spec. 



Lowland woods in moist places ; frequent. 

 Parietaria Pennsylvanica, MuhL iu Willd. Spec. iv. 



Dry banks in woods; not uncommon. 



I'l.ATAJVACEyi:. 



Platanus occidentalis, L. Spec. 

 Lowland woods; not uncommon. 



JUG LAND A CEJE. 



JuGLANS ciNEREA, L. Spec. 2d ed. 



Lowland woods ; not uncommon. 

 J. NIGRA, L. Spec. 



Lowland woods; not uncommon. 

 HicoRiA/ OVATA, (Mill.) Britt. Torr. Bull. xv. 1888. — Juglans 

 ovata. Mill. Diet. — Carya alba, Nutt. Gen. 



Upland woods ; abundant. 

 H. :\[INIMA, (Marsh.) Britt. Torr. Bull. xv. 1888. — Juglans alba 

 minima. Marsh. Arbust. — Carya amara, Nutt. Gen. 



Lowland woods; abundant. 



* CUPULIFER^. 



CoRYLUS Americana, Walt. Fl. 



Upland woods and thickets; abundant. 

 OsTRYA ViRGiNiANA, (Mill.) Koch, Deudr. ii. 2. — Carjyimts Vir- 

 giniana^ Mill. Diet. iv. — O. Virginica. Willd. Spec. iv. 

 Upland woods; frequent. 

 QuERCUS ALBA, L. Spec. 



Upland woods ; abundant. 



A larg-e tree with liglit colored bark and smooth twigs; leaves obovate, usually 

 nearly equally lobed all around, the siDuses shallow or extending nearly to the 

 midrib. 



Q,. MACROCARPA, Michx. Hlst. Cheues, 1801. 

 Woods ; abundant. 

 A large tree with deeply furrowed bark and rough or corky-winged twigs, grow- 

 ing more commonly on the bottom-lands ; leaves obovate- rhomboidal, usually with 

 the lower half lobod, and the upper half or terminal lobe merely sinuate. 



