162' GROSSULARIACEAE 



tains. Nat. in Pa. — Pennsylvania : Northampton, Easton, escaped ; 



Al,I,EGHENY. 



Family 7. ITEAOEAE Agardh. ITEa Family. 

 1. ITBA L. 

 1. Itea Virginioa L. Virginia Wii,i,ow. (Man. p. 485 ; I. F. /. 

 1864.) In wet places, N. J. and eastern Pa. to Fla. and La. — Penn- 

 sylvania : Cumberland, on the Susquehanna. 



Famii<y 8. HAMAMELIDACEAE Lindl. Witch-hazei, Famii^y. 



Calyx and corolla present : ovule solitary in each cavity, pendulous. 



1. Hamamelis. 

 Calyx and corolla wanting : ovules several or many in each cavity, horizontal. 



2. LiQBIDAMBAR. 



1. HAMAMELIS h. 



1. HamameHfl Vlrglniana I/. WiTch-hazel. (Man. p. 489; I. F./. 

 iSyp.) In low woods, N. B. and N. S. to Out., Minn., Fla. and Tex. — 

 Pennsylvania . Monroe ; Northampton ; Bucks ; Chester ; Lancas- 

 ter ; Lebanon ; Phii,adei<phia ; Frankwn ; Somerset ; Erie ; Del- 

 aware ; Allegheny. 



2. LIQUIDAMBAR L. 



1. Llquidambar Styraciflua L. SwEET Gum. (Man. p. 489 ; I. F./. 

 1880.) In low woods. Conn, to Mo., Fla. and Mex. — Pennsylvania: 

 Bucks ; Philadelphia ; Delaware. 



Family 9. GROSSULARIACEAE Dumort. Gooseberry Family. 



1. RISES L. 



Plants armed with firm spines : peduncles 1-3-flowered ( gooseberries) . 

 Calyx-lobes shorter than the limb : berry prickly. i. JR. Cynosbati. 



Calyx-lobes longer than the limb : berry smooth and glabrous. 

 Calyx-lobes shorter than the tube and hypanthium : stamens not long-ei- 

 serted. 

 Calyx-lobes oblong, as long as the stamens. 

 Peduncles normally i-flowered : stems usually with 3 spines to- 

 gether. 2. R. Uva-crispa. 

 Peduncles normally 2-flowered : stems with small or obsolete spines. 



3. R. oxyacanihoides. 

 Calyx-lobes linear, shorter than the stamens. 4. R. rotundifolium. 



Calyx-lobes much longer than the limb and hypanthium ; stamens long- 

 exserted. 5, R. Missouriense. 



Plants unarmed (or in R. lacusire with spines and numerous bristles) : pedun- 

 cles many-flowered {currants). 

 Berries bristly. 

 Stem bristly and spiny. 6. R. lacustre. 



Stem smooth and glabrous. 7. R. prostratum. 



Berries smooth and glabrous. 

 Hypanthium tubular : sepals narrow : berry black. 8. R.floridum. 

 Hypanthium campanulate : sepals broad: berry red. 9. R. rubrum. 



