PLATANACEAE. 171 



Leaves convolute in bud; stem unarmed; calyx-tube tubular, bright yellow. 



5. B. aureum. 



RIBES L. Gooseberry and Currant. 



1. RiBES Cynosbati L. Dog-berry. M. p. 486. Rocky woods. Spring. 



Lancaster — Columbia (Pr.). Berks — Monocacy (Me.), near Hamburg 

 (Wn.). 



2. Rises oxyacanthoides L. M, p. 487. Wet woods. Early summer. 



JSMcfcs— Narrowsville (Li.). Delaware— Chester Heights (Wn.). Lan- 

 caster — (P.). Northam'pton — Pen Argyl (Ja.). 



3. RiBES ROTUNDIFOLIUM Michx. M. p. 487. Rocky woods. Early summer. 



Bucks — Nockamixon (Fr.) (Ws.), Haycock Mountain (Ws.). Berks — 



Monocacy (Me.). Le/ii^/i— Idlewild, along the Lehigh (Kr.). North- 

 ampton — Easton (Ca.). 



4. RiBES FLORiDUM L 'Her. Wild Black Currant. M. p. 488. Woods. 



Spring. 



Philadelphia — Wissahickon (Je.), Shawmont (Sa.). Bucks — Near Sel- 

 lersville (Fr.), Narrowsville (Li.). Montgomery — Flat Rock Tunnel 



(Te.). Delaware— Ijansdowne (Pe.), Valley of Darby Creek (B. Sm.), 

 Middletown (W. Tr.). Chester— (P.). Northampton— Baston, Porter 

 (B.C.). Lehigh— Co-p\aj, mlt. (Kr.). 



Mercer — Princeton and along Assanpink Creek (C). Somerset — Pea- 

 pack (C). 



New Castle— 'Riddles, Tatnall; Pyle 's Mill, T. Burris ' Run and Center- 

 ville, Commons. 



5. RiBES AUREUM Pursh. Golden Currant. M. p. 488. In cultivation. 



Spring. 



RiBES RUBRUM L. Bed Currant. M. p. 488. Escaped from culti- 

 vation. Spring. 



Family 9. HAMAMELIDACEAE Lindl. Witch-Hazel Family. 



Ovules 1 in each cavity ; flowers perfect or polygamous ; shrubs or small 

 trees; fruit not spiny. 1. Hamamelis. 



Ovules several in each cavity; flowers monoecious; large trees; fruit glob- 

 ular, spiny. 2. Liquidavibar. 



1. HAMAMELIS L. 



1. Hamamelis Virginiana L. Witch-hazel. M. p. 489. Damp woods. 

 Autumn. 



2. LIQUIDAMBAR L. 

 1. LiQuiDAMBAR Styraciflua L. Swcet-guvi. M. p. 489. 



Philadelphia — Y alley of Delaware. Bmc/.s— Bristol (Fr.). Delaware — 

 U. Darby, Tinicum (B. Sm.). 



Family 10. PLATANACEAE Lindl. Plane Tree Family. 



1. PLATANUS L. 



1. Platanus occidentalis L. Sycamore, Buttonwood. M. p. 490. .\llu- 

 vial banks. Spring. 



