JUNE. 226 
SPERGULA ARVENSIS. Corn Spurrey. (Plate XIII. Fig. 
51.) A small plant, common in corn-fields, on light sandy 
soil. Its stems are from six to twelve inches long, swollen 
at the joints. Leaves very long and narrow, growing in 
whorls. Cluster of many flowers, petals white, rather longer 
than the calyx. It is a weak plant, and reclines much on 
the ground. 
SperGuLA Noposa. Knotted Spurrey. A curious little 
plant, not above three or four inches high, with minute 
leaves on the stem, but much longer at the root, and quite 
narrow. Flowers rather large for so small a plant, white, 
and proceeding from the end of the stalk. Growing in wet 
and sandy places. 
DECANDRIA. DIGYNIA. 
CALYCIFLORZ. ROSAceE&. 
AGRIMONTA. (Agerimony.) 
Generic Character. Calyx swollen, covered with hooked 
bristles, five cleft, and below the fruit. Petals five, fastened 
upon the calyx. Stamens from seventy to twenty. 
AGRIMONIA EuPATORIA. (Plate XIII. Fig. 52.) Common 
