ICOSANDRIA. 325 



cimens of this family in Engl. Bot. t. 1383, 706, 

 841, 842. The Myrtle tribe is another natural 

 order, comprehended chiefly under Icosandrla Mo- 

 nogynia, abounding in a fragrant and wholesome 

 aromatic oil. These are plentiful in New Holland. 

 See Tr. of Linn. Soc. w. 3. 255, also Evot. Bot. 

 t. 42, 59, and 84. Caryophyllus aromaticus, 

 the Clove, should on every account be removed 

 hither. 



52. Pentagynia. In this order it is most convenient 

 to include such plants as have from two to five 

 styles, and occasionally, from accidental luxuriance 

 only, one or two more. An example of it is the 

 very natural family of the Pomacece, as Pyrus, the 

 Apple, Pear, &c., Engl. Bot. t. 179, 350, 337; 

 and Mespilus, t. 1523, Exot. Bot. t. 18, 85. In 

 this family some species of the same genus have 

 five, others three, two, or only one style, and a cor- 

 responding number of seeds. Spiraa, nearly allied 

 to it, stands here, most of its species having five 

 styles, though some have a much greater number ; 

 see Engl. Bot. t. 284, 9^0. Mesembryantliemum, 

 a vast and brilliant exotic genus, of a succulent 

 habit, abounding in alkaline salt, and a few genera 

 naturally allied to it, make up the rest of the order. 



3. Polygyriia* An entirely natural order of genuine 

 Rosaceous flowers, except possibly Calycanthus. 

 Here we find Rosa, Engl. Bot. t. 187, 990 2; 



