British Wild Flowers and Trees 219 



though they are grown in some botanic gardens. 

 R. acris pleno and R. repens pleno are double forms 

 of the wild kinds, and worth growing, from their pretty 

 ' bachelor's-button ' flowers, bright yellow, neat, double, 

 lasting longer in flower than the single kinds. 



Then we have the Marsh Marigold (Caltha palustris), 

 which makes such a glorious show in spring along 

 moist bottoms, or by river banks in rich soil — notably 

 on the banks of the Thames, where, when in high 

 tide, the ground for many feet under water looks as 

 if strewn with gold, the water having overflowed 

 numbers of these showy flowers. Even where common, 

 m the woods and fields, this handsome plant, single 

 or double, deserves a home beside all garden waters, 

 or even in moist ground, because it makes a truly 

 fine spring - flowering plant. There is a double 

 variety sold in Covent Garden in early summer, 

 bearing double flowers of large size, which, like the 

 double Crowfoots, last longer than the single bloom. 

 Apart from the double garden forms of the Marsh 

 Marigold, these'^re the kinds now recognized as 

 belonging to our flora. 



Caltha. 



palustris (Linn.). 



a. vulgaris (Schott). 



b. Guerangerii (Boreau). 



c. minor (Syme). 

 radicans (Forster). 



Trollius europaeus is the Globe-flower, well worthy 

 of a garden home from its fine form, colour, and 



