658 PHANEROGAMS. 



there are only two, one anterior and one posterior. Ovary almost always single and 

 polycarpellary, inferior or superior, unilocular or multilocular. 



I. GamopetalflB or SympetalsB. 

 The petals united at the base into a tube or cup ; corolla never wanting. 



A. Anisocarpm, The number of whorls or of members of the whorls is never 

 larger than the typical number ; calyx or some of the stamens sometimes abortive ; 

 carpels usually only two, one anterior and one posterior, or three and united into a 

 single ovary ^. 



a. HypogynsB. 



Order 1. Tubiflorae. 

 Families: i. Convolvulaceae (including Cuscuteae), 

 3. Polemoniaceae, 



3. Hydrophyllaceae, 



4. Boraginese, 



5. Solanaceae. 



Order 2. Labiatiflorse. 



Families: i. Scrophulariaceae, 



2. Bignoniaceae, 



3. Acanthaceae, 



4. Gesneraceae, 



5. Orobancheae, 



6. Ramondieae, 



7. Selaginese, 



8. Globulariaceae, 



9. Plantagineae, 



10. Verbenaceae, 



11. Labiatae. 



Order 5. AggregateB. 

 Families: i. Rubiaceae, 



2. Caprifoliaceae, 



3. Valerianaceae, 



4. Dipsacaceae. 



Order 6. Synandree. 

 Families: i. Gucurbitaceae, 



2. Campanulaceae, 



3. Lobeliaceae, 



The orders are arranged mainly after Braun and Hanstein, 



