14 
perforatum, 
spherocar- 
pum? 
angulosum. 
POLYANDRIA, DI-PENTAGYNIA. 
250. HYPERICUM. Gen. pl. 1224. (Hyperica.) 
Calix 5-parted, segments equal. Petals 5. 
Stamina numerous, scarcely united at the 
base. Capsule roundish; cells equal with 
the number of styles; 4, 2, 3, and 5.— 
Nutt. 
1. H. erect, branched; stem ancipital, leaves ob- 
Jong, obtuse, transparently dotted ; panicle ter- 
minal, brachiate-leafy; petals longer than the 
acute-lanceolate calix.— Willd. and Pursh. 
H. Virginicum, Walt. 
; nig Fi. Dan. 1043. Eng. Bot. 295. Curt. FI. 
40nd. 
Common St. Johin’s-wert. 
About a foot or eighteen inches high; flowers as in all the 
following species, yellow. This plant has become a most pes- 
tiferous weed, every where throughout the Union. It is ac- 
cused of injuring horses. Introduced originally from Europe. 
In fields, and by road and fence sides, every where unfortu- 
nately, abundant. Perennial. From June till August. 
2. H. erect, very smooth; leaves oblong; pani- ° 
cle naked, dichotomous ; all the forks one-flow- 
ered; styles coalescing, capsule globose.—Mich. 
H. spherocarpum, Mich. ? 
About ten or twelve inches high. Flowers pale-yellow, 
small. This plant may not be the H. spherocarpum of Mich., 
but it comes very near it; and for the present I have thought 
with Mr. Nuttall, that it had best be referred to that species. 
On the borders of a ditch, surrounding a meadow on the east 
side of the road to Woodbury, near the “ causeway,” abun- 
dant. I have found it no where else. It has also been found in 
Jersey, by Mr. Collins. Perennial. June, July. 
8. H. erect; stem four-angled, leaves oblong, 
acute, narrowly sessile; panicle terminal, di- 
chotomous; branches divaricate, with the flow- 
ers arranged on them distantly alternate; 

