: e 
* rn ae 4 
TETRANDRIA, DIGYNTA. 107: 
Small herbs with trifid or biternately divided leaves, 
sheathing at their base; flowers sessile, in axillary clus- 
ters, or terminal and dichotomously corymbose. In 4. or- 
biculata the leaves are vound and lobed eee 
Species. 1. 4. arvensis. In the ficlds of Virginia. 
Crayton. (Iitroduced?) : : , 
Besides the preceding European species there are 3 
others indigenous to the alpine mountains of Peru. ~ 
160. HAMAMELIS. L. ( Witch-hazel.) 
Calix 4-cleft, persistent, with 3. bractes. Pe- 
tals 4, long and linear, with a short dilated fila- - 
ment at the base of each. Filaments and antiers 
united: anthers 2-celled, each cell having a ver- 
tical valve. Capsule coriaceous, (nut) 2-celled, 
2-lobed, 2-awned, apex 2-valved, valves cleft. 
Seeds 2, arillate. 
A small tree with the habit of Alnus; leaves alternate, — 
stipulate, obliqye at the base; flowers sessile, by threes, 
in axillary or lateral pedunculaie clusters; calix pubescenty 
' foliaceous, and persistent; petals ligulate, alternating with 
the stamina; capsule indurated, half inclosed in the base, 
of the persistent calix, bursting elastically; seeds arillate, 
black and shining; corculum flat, inclosed in a carneous 
perisperm, radicle descendant, opposite to the hilum. 
Species. 1. H. virginica. From Canada to Florida. 
_ &. macrophylia, leaves suborbiculate cordate, with elevat- _ 
_ ed scabrohg-spots on the under side —In Georgia, Purss, 
__. Catabaw mountains, (North Carolina) W.-y. "parvifolia, — 
leaves smaller, oblong obovate, upper part undulately and 
grossly crenate, the under side pubescent, somewhat hire 
_ Sute; segments of the calix oblong, stamens and perigy- 
Nous filaments often nearly eq A shrub every way 
~~ smaller than the common H. virginica, with the branches 
“Nearly erect, calix somewhat coloured and diaphanous, * 
petals bright yellow. From the mountains of Pensylvay _ 
Dia, v. ». in Hort. Landreth, Philadelphia. 
