ment of tufts of hair, or of processes like the pabites of person- 

 ale flowers, until all insects were excluded except bees. 

 These have kept on visiting the flowers until now they enter 

 completely closed flowers like those of Linaria." Weed 

 observes that owing to a change in color, the bee is able to 

 select the younger nectar-bearing flowers. In our Gentiana 

 quinquefoUa Lam. the corolla is funnel form and open with 

 a row of conspicuous glands between the bases of the fila- 

 ments. 



Sweet William. The common cultivated 

 o emomaceae. p^^^^ maculata L. bears numerous pur- 

 ple flowers in an ample panicle. It has a pleasant odor and 

 is frequently pollinated by species of Sphinx. The related 

 P- paniculata is proterandrous, according to Mueller. 



Many of the Borraginaceae are adapted 

 to short-tongued visitors, as in Myosotis; 

 others are adapted to long-tongued insects, as in Mertensia, 

 Liihospermum, etc. These are adapted to long-tongued 

 bees and are also visited by Ltpidoptera. The colors of the 

 flowers vary from the yellow of the puccoons and blue of 

 Mertensia to the white and blue of Myosotis- 



In Lithospermum canescens the flowers are diptopo- 

 gamous or very variable. The L. angustifolium produces 

 long, tubular, conspicuous flowers in early spring but as the 

 season advances they become gradually , shorter and are 

 finally cleistogamous. 



Symphytum officinale L. Common Comfrey produc- 

 es a tubular, five-toothed corolla, inflated above. The 

 throat is closed by five small scales which prv)bably serve to 

 compel the insect to thrust its proboscis between the proxi- 

 mately closed anthers anrt to bar out useless visitors. The 

 stigmas and stamens mature at the same time. 



