D I 



The fecond order in each of the firft thlrteea 

 clafTes, except the ninth, in the Linnaean fy- 

 ftem ; it comprehends thofe plants in whofe 

 frudlification there are two PljUlla, which are 

 confidered as the female parts of generation. 



DIMIDIATUM Capitulum, [dimidius, half J 

 hemifpherical, refembling half a head. 



. DIOECIA [hi, hh, & Oi>c(^, domm, a 

 Jioufe] The twenty-fee ond clafs in the Linnae- 

 an fyftem, confifting of thofe plants which, ha- 

 ving no hermaphrodite flowers, produce male 

 and female flowers on feparate plants ; inares et 

 femm<s habitant in diver fis thalamis & domicilii s. In 

 every fpecies of this clafs there is both a male 

 and a female plant diftindlly. The males are 

 produced from the female feeds, which how- 

 ever require the vicinity of a male plant, with- 

 |)ut which they do not propagate. It is necef- 

 fary to obferve, with regard to the diftinguifla- 

 ing chara£ler of this claft, that there are fome 

 particular plants excluded, notwithftanding that 

 they produce male and female flowers on fepa- 

 rate plants, as in the Moras, Urtica, Croton, Ru- 

 tnex, Silene, Carex, Rhus, Laurus, Valeriana, 

 Rhamnus, Cucubalus, &c. but it does not run u- 

 niformly through the whole genus in any of 

 them. The orders arc fourteen, viz, Mo- 



H 2, NANDRIA, 



