O L 



which includes 26 genera, viz, Tnpcsolum, Of- 

 beckioy Rhexia^ Oenothera, Gaura, Epiiobiumj 

 Mellcocca, Amyris, GriJIea, Combretum, Jlophyl- 

 lus, Ximenia, Munufops, 'Jambol'ifera, Santalumj 

 A'Iemecylo)7, Lawfonia, Vaccinium, Erica^ Daphne^ 

 DircUy Gnid'io, Stellera, Pajfer'ina, Lacbnea^ 

 Bieckea i Digynia, containing 3 genera, viz. 

 Gahnia^ JVcinmannia^ Moehringia ; Trigynia, 

 containing 5 genera, viz. Polygonum, Coccoloba^ 

 Prndllniay Cariiiofpermum, Saptndus ; Tetra- 

 GYNIA; containing 3 genera, viz. Paris, Adoxa, 

 Elatim. 



OCULUS, an eye : the gerrtma fo called, by 

 Ludwig, when proceeding from the ala of 

 leaves. 



OFFICINALIS {pfficina, a fhop] of the 

 fhops ; ufed in medicine, and therefore kept 

 in the fhops of apothecaries, as Valeriana offi- 

 dnalis, &c. Ufed to diftinguifh the fpecies of 

 particular plants. 



OLIGANTHER^ \0\ly^, exigmis, fmall, 

 few, & Anthera~\ The fixteenth clafs in Royen's 

 fyftem : it contains thofe plants whofe petala 

 or fegments equal or exceed their number of ^ 

 Stamitia ; hence it includes many of the plants 

 in Linnseus's firfl five clafTes. 



OPER- 



