16 ELEMENTS OF STRUCTURAL BOTANV. 



corolla, must be rej^ai'decl as a calyx, and the flowei* it- 

 self, therefore, as apetuluus. 



21. Kemove now these coloured sepals, and what is 

 left of the flower very much resembles what was left of 

 our Buttercup, after the removal of the calyx and cor- 

 olla. The stamens are very numerous, and are inserted 



on the receptacle. The carpels are 

 also numerous, (Fig. 21) are inserted 

 on the receptacle, and are free from 

 ( '«gg?' each other [ai>uciirpoiis). And if you 



rig. 21. Fig. 22. examine one of the carpels (Fig. 22) 

 you will find that it contains a single ovule. The 

 flower, in short, so much resembles that of the Butter- 

 cup that you will be prepared to learn that the two be- 

 long to the same Order or Family of plants, and you will 

 do well to observe and remember such resemblances as 

 have just been bi-ought to your notice, when you set out 

 to examine plants for yourselves, because it is only in 

 this w'ay, and by slow steps, that you can acquire a 

 satisfactory knowledge of the reasons which lie at the 

 foundation of the classification of plants. 



22. Marsh-Marigold. This plant grows in wet 

 places almost everywhere, and is in flower in early 

 summer. 



Note the entire aosence of nairs on the surface of ine 

 plant. It is thei'efore (flahrous. 



The root, like that of the Buttercup anu of ihe He- 

 patica, is Jihrous. 



The stem is hollow and furrowed. 



The foliage-leaves are of two kinds, as in the Butter- 

 cup. The radical leaves spring from the base of the 

 stem, whilst the higher ones are cauline. The leaves 



i 



