472 



FOURTH GROUP. SEED-PLANTS. 



Order 4. CAMPANULINEAE. 



Families: i. Campanulaceae, 4. Gardeniaceae, 



2. Lobeliaceae, 5. Cucurbitaceae. 



3. Stylidieae, 



Order 5. AGGREGATAE. 



Families : I. Rubiaceae, 4. Dipsaceae, 



2. Caprifoliaceae, 5. Compositae, 



3. Valerianeae, 6. Calycereae. 



Families of unknown or doubtful affinity, chiefly parasitic (Podostemaceae and 

 Ceratophyllaceae, water-plants). 



1. Aristolochiaceae, 5. Balanophoreae, 



2. Cytinaceae, 6. Podostemaceae, 



3. Santalaceae, 7. Ceratophyllaceae. 



4. Loranthaceae, 



