Threads in II Sets. X Males. Diad. Decand. 
543. Hop Medick, — M. lupulina. 
Spikes oval, pods kidney-shaped, with 1 seed 
in each, stem trailing. — Curtis. II. 57. 
Dry Pastures, June, A. Common. 
CLASS. XVIII. 
Character of the XVIIIth. Class. 
Threads in fnany Sets. Polyadelphia. 
, Many Sets. Many Males. Polyad. Polyand. 
St. John' s Wort. Hypericum. Gen. PI. 1224. 
Cup of 5 segments. Petals 5. Threads many, 
united at the base into 5 sets. A capsule. 
5^4. Common St. John's lVort.~¥{. perforatum. 
Three females in each fiovver, stem 2-edged, 
leaves blunfwith transparent dots. — Curtis. 
I. 57. Sowerby. 295. 
Hedges, August, P. Gommon. 
545. St. Peter's Wort. — H. quadrangulum. 
Three females in each flower, stem square, 
herbaceous.— Curtis. IV. 52. Sowerby. 370. 
Bogs and Ditches, July, P. Common. 
546. Trailing St. John's Wort. — H. humifu- 
SLim. 
' Three 
