14 
perforatum. 
sphserocar- 
pum ? 
aiigulosum. 
POLYANDRIA, DI-PENTAGYNIA. 
• 250. HYPERICUM. Gen. pi. 1224. {Hypenca.) 
Calix 5-parted, segments equal. Petals 5. 
Stamina numerous, scarcely united at the 
base. Capsule roundish ; cells equal ivith 
the number of styles; 1, S, 3, and 5. — 
JV* utt. 
1. H. erect, branched; stem ancipital, leaves ob- 
long, obtuse, transparently dotted ; panicle ter- 
minal, brachiate-leaty ; petals longer than the 
acute-lanceolate calix. — TFiltd. and Pursh. 
H. Virginicum, Walt. 
Icon. P'l. Dan. 1043. Eng. Sot. 295. Curt. FI. 
Lond. 
Common St. JoJin’s~wort. 
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. sphserocarpum, Mich. ? 
About ten or twelve inches high. Flowers pale-yellow, 
small. This plant may not be the H. sphcerocarpum of Mich., 
but it comes very near it ; and for the present I have thought 
with Mr. Nutlail, 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 Vv^oodbury, 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. 
3. 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; 
