180 LINN^AN CLASS IX., X. 



Dodonea. Sepals 4, Petals ncne. Style 3 cleft at the apex. Cap 

 sule winged. Seeds 2 in each cell. Sapindacece, 40. 



Order IL— DIGYXIA. 



Chrysosplenium. Calyx 4-cleft, colored within. Petals none 

 Stamens 8 — 10, filaments short, subulate. Capsule 1-celled, many 

 seeded. Saxifragacece, 59. 



Order III.— TRIGYXIA. 



Polygonum. Perianth 5-parted, petaloid, persistent. Stamens 5 — 9 

 Fruit 1 seeded, mostly triangular. FolygonacecB, 102. 



Cardiospermum. Calyx 4-leaved, leaves concave, two exterior ones 

 smallest. Corolla 4-petaled. Capsule membranous, 3-valved. Seeds 

 globose, solitary. Sapivdacece, 40. 



Sapindus. Sepals 4 — 5, two exterior ones largest. Petals 4 — 5, 

 lanceolate. Stamens 8 — 1 0. Stigmas 2 — 3. Fruit of 1 carpel, 2 sup- 

 pressed. SapindaceoB, 40. 



Order IY.— TETRAGYNIA. 



Diamorpha. Sepals 4. Petals 4, concave. Stamens 8, with purple 

 anthers. Carpels 4. (Succulent herbs.) Crassulacece, 58. 



CLASS IX.— ENNEANDRIA. 



Order I— MOXOGYNIA. 



Laurus. Perianth 4 — 6-cleft, perfect, polygamous, or dioecious. 

 Petals none. 3 inner stamens usually sterile. Fruit 1-seeded, drupe. 

 (Sassafras.) Lauracece, 103. 



Order II— DIGYNIA. 



Eriogonum. Involucre campanulate, many-flowered. Perianth 6- 

 cleft. Stigmas 3. Seed 3-angled. Polygonaceee, 102. 



Order III— TRIGYNIA. 



Pleea. Perianth 6-parted, expanding. Styles 3. Capsule 3-angled, 

 3-valved, 3-celled, many-seeded. Ilelanthacece, 131. 



Rheum. Perianth 6-cleft, permanent. Nut 1, 3-sided. Polygona- 

 eecB, 102 



CLASS X.— DECANDRIA. 



Order L— MONOGYNIA. 



a. Flowers polypetalous, irregular. 



For Cassia, Baptisia, Cercis, Sophora, Cladrastris, see order Legu- 

 minosce, 43. 



h. Flowers polypetalous, regular. 



Pyrola. Calyx minute, 5-parted, Anthers opening by 2 pores. 

 Corolla rotate, 5-lobed. Capsule 6-celled. Ericacece, 72. 



Decodon. Calyx short, campanulate, with 10 teeth, unlike. Petals 

 5. Capsule globose, 3-celled, many-seeded. Lythracece, 47. 



Chimapkila. Calyx and corolla as in the preceding. Stigma ses- 

 sile. Anthers beaked. Capsule 5-celled, dehiscing at the angles. 

 Ericacece, 72. 



