. The vegetable kingdom : or, The structure, classification, and uses of plants, illustrated upon the natural system. actly the same aswhat is observed in the coroUa of Polygala, where there are only 3 petals v\ith 5 sepals ;but the suppression has more analogy -with what concerns the stamens, since with aquinary number in the calyx each Order has eight antheriferous filaments. In this view I fully agi-ee. The imsjTn-metrical flowers, moie especiallymanifested in the reduction of thenumber of carpels to 2 or 3 in astructure other\\-ise quinary, thedefinite o\ades,the twuaing habit ofComesperma
. The vegetable kingdom : or, The structure, classification, and uses of plants, illustrated upon the natural system. actly the same aswhat is observed in the coroUa of Polygala, where there are only 3 petals v\ith 5 sepals ;but the suppression has more analogy -with what concerns the stamens, since with aquinary number in the calyx each Order has eight antheriferous filaments. In this view I fully agi-ee. The imsjTn-metrical flowers, moie especiallymanifested in the reduction of thenumber of carpels to 2 or 3 in astructure other\\-ise quinary, thedefinite o\ades,the twuaing habit ofComesperma,the samaroid fruit ofSecuridaca, and it may even beadded, the deleterious qualities ofsome Polygalas, together with thesaponaceous secretions of theMonninas, are all arguments ofthe strongest kind in favoui* ofMilkworts and Soapworts belong-ing to the same Alliance. Certain anomalous genera, be-longing as I think to this Order,liave been elevated to the rank ofNatural Orders. Of these Trigo-nia, a genus of tropical Americantrees, has been divided fromMilkworts because of its leavesbeing opposite and having sti-. Fig. CCLXIII. Pig. CCLXIII.—Trigonia crotonoides.—^. de St. Hilaire. , with the petals displayed in their natural position; 3. a6. cross section of a seed. a flower seen from the side; 2. thtpistil; 4. cross section of the ovary Sapindales.] POLYGALACE^. 377 pules, of some supposed difference in the relative position of the laigest petal, theanthers openuig longitudinally, and the presence of some fleshy glands between the ovaryand stamens; I cannot, however, concede anything like ordinal importance to thesecircumstances. Trigonia may be regarded either as an approach on the part of Milk-worts to the Sapmdaceous structui-e, as is indicated by the longitudinal dehiscence ofits antliers, the greater symmetry of its flowers, and its 3-valved fruit; or as actually amember of the Soapworts, approaching Milkworts. The supposed relation between it andSpindle tree
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