68 



NOMENCLATURE. 



102. 



Beside the proper organs for secreting the honey, there 

 are other parts which preserve it, the nectarothecte. These 

 are cavities, sacks, or spurs {calcar). These parts belong 

 often essentially to the corolla. 



There are other organs which serve for protecting the ho- 

 ney. These are called nectar ilymata, and are formed either 

 by tufts of hairs, as in the Geranium, or by scales and subor- 

 dinate leaves, as in Phyhca, (Tab. II. Fig. 15.) ; or, lastly, 

 by the situation and direction of the petals themselves. 



Lastly, We must not overlook the nectarostigmata. These 

 are^ for the most part, coloured parts, lines, or spots, which 

 lead to the proper nectaries, as we see them marked out in 

 Pelargonia especially. 



Vll. Sexual Parts. 

 103. 



Sexual paints are those organs which serve for the propa- 

 gation of the plant. 



As in all the higher forms of organized nature, we observe 

 two sets of organs, the one of which, as being the active and 

 impregnating, are called the male organs, and the other, as 

 being more passive and adapted for being impregnated, are 

 called the female jf;fl!r^.9 we distinguish also, according to 

 this idea, the male and female parts of plants. 



The time at which plants arrive at the full exercise of their 

 functions is called puberty ; before this time, they are called 

 impuberes, and afterwards effoeta. 



Dichogamy consists in that arrangement, by which the sex- 

 ual organs come not at once, but after one another, to ma- 

 turity. The dichogamy is androgynous, when the antherae 

 come first ; and gynandrous, when the stigmata come soonest 

 to maturity. Tfcj former is the case in Tropaeolum, the 

 latter in Euphorbia, (331.) 



A flower is called neutral (neuter), when no sexual or- 

 gans are produced in it ; it is called hermaphrodite {herma- 



