186 LINN^AN CLASS XIV. XVII. 



CLASS XIV.— TETRADYNAMIA. 



Order L— SILICULOSA. Pod short. 

 Order II— SILIQUOSA. Fod long. 

 The genera of this class make the Natural Order Cruci/ercc, 13. 



CLASS XV.— MONADELPHIA. 

 Order IIL— TRIANDRIA. 



Sisyrinchium. Perianth 6-leaved. Stamens 3, usually monadelphous. 

 Capsule triangular. Small plant with grass-like leaves. Iridacccc, 124. 



Order V.— PENTANDRIA. 



Passijlora. Calyx 5-parted, with a campanulate tube. A filamen- 

 tous crown inserted in the throat. Stigmas 3, clavate. PassifloracecEy 53. 



Achyranthes. Telanthera. Perianth double, exterior one 3-leaved, 

 the interior 5-leaved. Stamens 5. Style 1. Capsule 1-celled, 1-seed- 

 ed. Amarayithacece, 99. 



Oplothcca. Froelichia. Perianth double, the exterior 2-leaved, trun 

 cate, the interior 5 cleft, tomentose. Stamens 5. Capsule 1-seeded. 

 Amaranthacece, 99. 



Order VIIL— OCTANDRIA. 



Pistia. Perianth a spathe, tubular, strap-shaped, hooded. Stamens 

 3 — 8. Capsule 1-celled, many-seeded. An aquatic plant. Arace(c,\Z%. 



Order X.— DECANDRIA. 



Geranium. Sepals 5, equal Petals 5, regular. Stamens 10; alter- 

 nate ones largest, with a scale at the base. Carpels with long awns. 

 Geraniacece, 24. 



Acacia, Mitnom, Darlingtonia, and Schrankia will be found in Legu- 

 minosce, order 43. 



Order XIL— POLYANDRIA. 



The genera of this order will be found forming the three Natural 

 Orders jfalvacece, No, 33, Ternstrmmiacece, No, 32, and Styracece, No. 73. 



CLASS XVI.— DIADELPHIA. 

 Order V. to Order VIIL— PENTOCTANDRIA. 



Polygala. Sepals 5, permanent, unequal, 2 of them wing-like, large, 

 colored. Corolla irregular. Capsule obcordate, 2-celled, 2-valved. 

 Polygalacea^, 15. 



The remaining genera of these orders form the Natural Order Fu.ua- 

 riacece. No. 12. 



Order X,— DECANDRIA, 



The genera of this order belong to the Natural Order Lcguminoscpy 

 No. 43. 



CLASS XVII.— SYNGENESIA. 



This class forms the Natural Order Compositce, No, C8, where it will 

 be found explained and analyzed. 



