78 



Elementary Work in Botany. 



Fig. 56. cEnothera ovata. s. sur- 



face of the ground, r. Rootstock from 

 which grow the leaves and sessile 

 nowers. No stem, not even a ped- 



The word corolla, then, need 

 not be used in the description of a 

 flower which has distinct petals; 

 and the word petal is not neces- 

 sary when the petals are united. 



Classify your flowers by put- 

 ting in separate groups (i) those 

 with distinct petals and (2) those 

 with united petals. Note the co- 

 hesion of the sepals. Take in turn 

 each of the flowers in which any of 

 the organs are coherent and try to 

 discover whether the union is of 

 any use in the work of making 

 seed. Find the nectaries. Have 

 any of your flowers slender tubes ? 

 Decide in each case what kind of 

 an insect would best assist in 

 cross-fertilization. Are the carpels 

 distinct in any of your flowers? 

 Are they completely united in 

 any ? Describe one of the flowers. 

 Your description of a mallows 

 blossom ought to be like this: 

 " Mallows flowers are half an inch 



1 - 1 - 



Or leSS 1U breadth OU peduncles 



kss than an inch long. The five- 

 lobed calyx bears three bracts near 



