4:1 



Delphinium The f lowers of the genus are conspicu- 

 ous. The European D. elatum L. as well as D. consolida 

 L. are frequently cultivated; D. azureum michx. flowers in 

 July. The /?. tricome, michx. is native to Southern Iowa. 

 In the D. elatum, L. the five blue sepals are conspicuous, 

 very irregular, the upper one prolonged into a spur. Petals 

 four, irregular, two arch over the entrance to the spur, the 

 hairs form a path-finder to the nectar which is secreted by 

 the petals and contained in the spur. The pistil matures 

 first and bends down before dehiscence, but when mature it 

 points upward. I have seen B. pennsylvariious '^a ^ i^con- 

 sin. It is also visited by Synkalonia, and such Lepidoptera 

 as Danais and Papilio- 



Aguilegia Oanadenisis, L- The American Columbine 

 is frequent in deep rich woods and flowers in early May. 

 The conspicuous, scarlet flowers are yellow inside and pendu- 

 lous. The five sepals are regular and colored like the petals. 

 Petals five, hoUo.wed out into long, nearly straight spurs, 

 the opening is wide enough to admit the head of a bumble 

 bee. The nectar, which is secreted by the fleshy part at the 

 end of the spur, occurs in the upper part of the same The 

 flower is adapted to long tongued bumble bees; these reach 

 the honey by haging on to the flowers, grasping the base of 

 the spur with fore legs, and with their hind legs to the col- 

 umn forward by the stamens and pistils. 



Several members of this order are culti- 

 vated for ornamental purposes. In the 

 common Barberry (Barberis vulgaris L.) 



The yellow flowers are borne in racemes and contain 

 some nectar, which is secreted by two fleshy, orange colored 

 glands at the base of each petal. The honey collects be- 



