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 



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



1 Longitudinal section of the flower of the Bearberry (Arctostaphylos Uva-ursi). 2 Longitudinal section of flower of Ked 

 Valerian {Centranthus ruber). s Transverse section of the same flower. ■* Portion of the flower of Tulipa nylvestris. 

 5 Longitudinal section of flower of Cobcea scandens. 6 Longitudinal section of flower of Daphne Blagayaiia. ' Longi- 

 tudinal section of flower of Lonicera alpigena. 8 Longitudinal section of flower of Vuica herbacea. » Single stamen of 

 Vinca. lo Style and stigma of Vinca. ' Natural size. All the other figs, magnified. 



base in a little depression of the filament on the side directed tow^ards 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. 



I 



