JULY. 265 
numerous and of a bright yellow. It is useful in rock work, 
and for covering unsightly ground, as it spreads rapidly. 
Lystmacuia vuueaRis. Great Yellow Loose-strife. In 
appearance a very different plant to the two mentioned 
above. It is erect, from two to three feet high, with large 
oval leaves on short stalks opposite to each other, or three 
together. A large branched cluster of flowers terminates 
the stem, the corollas of which are large, yellow, and hand- 
some. It grows on the sides of rivers and wet shady places. 
There are two other species; but they are rare. 
PENTANDRIA. MoNnoGynIiA. 
CoROLLIFLOR2. GENTIANACES, 
ERYTHRAA. (Cenravury.) 
Generic Character. Calyx five-cleft. Carolla funnel-shaped, 
and divided at the top into five parts. 
Eryturza Crentavrium. (Plate XVI. Fig. 62.) Common 
Centaury. Frequent in dry pastures, and on old walls. Its 
pretty red blossoms are not very unlike Jessamine in shape ; 
but so sensible of moisture that it is only seen expanding 
during the brightest sunshine ; indeed it begins to close 
