240 



RECEPTION OF FLOWER-SEEKING ANIMALS AT THE FLOWER. 



known climber Cobcea scandens, the insertion of each stamen is inclosed in a regular 

 felt, and these five felty tufts form, as it were, a sort of diaphragm which cuts off 

 the honey-secreting, basal region of the flower from the main cavity of the bell 

 (see fig. 263 ^). Again, in the Tulip (fig. 263 *), each stamen secretes honey at its 



263. — Tufts of Hair as a Protection to Flowers. 



1 Longitudinal section of the flower of tlie Bearberry (Arctostaphylos ITva-ursi). 2 Longitudinal section of flower of E£(i 

 Valerian (Centranthus ruber). 3 Transverse section of the same flower. * Portion of the flower of Tulipa sylvestrU. 

 5 Longitudinal section of flower of Cohxa scandens. ^ Longitudinal section of flower of Daphne Blagayana. ? Longi- 

 tudinal section of flower of Lonicera alpigena. 8 Longitudinal section of flower of Vinca kerbacea. ^ Single stamen of 

 Vinca. 10 Style and stigma of Vinca. ^ Natural size. All the other flgs. magnified. 



base in a little depression of the filament on the side directed towards the perianth. 

 Tufted hairs completely cover the nectary, so that insects have to lift the whole 

 stamen to get honey. In Daphne Blagayana (fig. 263^) the stalked ovary is- 

 enveloped in hairs, by which the honey formed at the base of the flower is protected 

 from unbidden guests. 



