SYNOPSIS OF THE NATURAL ORDERS. XV 



II. Stam. on the corolla, filaments connected. 



40. PoLYGALACE.*!. Filaments monadelphous, separating into 

 2 bundles above. 



III. Stam. on the corolla, distinct. 



a. Stam. 2. Cor. regular. 

 218. OleacejE. 



b. Stam. 2, or 4 and didynamous. Cor. irregular. 



234. Orobanchace^. Ovary 1-celled, with 2 or more parietal 



placentas, in a fleshy disk. 

 237. Scrophulariace*. Ovary 2-celled; placentas central. 

 263. Vbrbenace^. Ovary 2 — 4-celled. Capsule dividing 



into 4 nuts. 



c. Stam. 4 — 5, not didynamous. Cells of the ovary with 



1 — 2 ovules. 

 218. Aquifoliace«. Cor. 4 — 6-parted. Hypogynous disk 0. 



Fr. fleshy, not bursting. 

 224. CoNVOLVULACEiB. Cor. 4 — 5-lobed. An hypogynous 



disk surrounding the ovary. Fr. a capsule, bursting. 



d. Stam. 4 — 5, not didynamous. Cells of the ovary with many 



ovules. 

 223. PoLBMONiACE*. Ovary 3-celled. Caps. 3-valved. 

 220. Gentianace^. Ovary 1 — 2-celled. Caps. 2-valved. 

 232. SoLANACE^. Ovary 2-celled. 

 290. Apocynace/B. Ovaries 2, 1-eeUed. 



Subdivision V. Perianth single or none. 



A. Flowers not in catkins. Perianth superior. 



288. Aristolochiacb^. Stam. 6 or 12, epigynous. Ovary 



3 — 6- celled. 

 120. HaloragacEjE (part). Stam. 1. Perianth very minute. 

 287- Santalace^. Stam. 4 — 5. Ovary 1-celled. 



B. Flovrers not in catkins. Perianth inferior. 



I. Fr. separating into several carpels. 



120. Haloragace^ (part). Carp. 4, not bursting. Stam. 8. 

 293. Callitbichace^. Carp. 4, not bursting. Stam. 1. 



289. Euphorbiaoe^. Carp. 3 or 2, opening with elasticity. 



II. Fruit indehiscent. 



a. Leaves with stipules. 

 280. PolygonacBjB. Stipules (ochrese) connected quite round 

 the stem. 



