HYACINTH CULTURE AT HAARLEM 145 



the single, except in the blossom. We have already followed 

 the gradual course of the growth of the bulb, and described 

 its general composition. We will now go back to the single 

 hyacinth, for in explaining its work of reproduction it is 

 easier and more convenient to dissect than the double 

 flower. 



The calyx or corolla forms at the base (through its shape) 

 a chamber or room in which the " ovary " is found, but 

 detached from it. At the point where the calyx is narrowed 

 in at the entrance of the ovary chamber are the stamens. 

 The parts of the corolla (or divided sections which curl 

 back in the hyacinth) are called petals. 



The stamens are attached to the interior of the calyx, and 

 from the base of the stamen to the pedicel (or little 

 connecting stalk) runs a fine fibre (which takes the place of 

 the filament which is detached in other flowers), and this is 

 seen from the outside as a line of colour a little darker than 

 the rest of the flower. 



The ovary (in the chamber at the bottom of the calyx) 

 is surmounted by the pistil, the narrow body of the pistil 

 is called the stylus, and the head is the stigma. 



The stamens of the hyacinth have no filaments, they are 

 sessile within the calyx, and the anthers are also attached at 

 their base (though there is the fine thread of darker colour 

 to be seen running through the calyx extending from the 

 stamen to the pedicel). 



The stamen is covered, when ripe, with a yellow dust 

 called pollen, this looks like little black grains when under a 

 microscope they are little bags full of a kind of clear juice, 

 these, when the stamens bend over and shed (as pollen), 

 are caught by the stigma at the head of the pistil. This 

 stigma, when seen under a microscope, is seen to be composed 

 of very fine valvular cells, which can hold the seminal juice 

 the juice passes through the narrow channel of the stylus (or 



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