404 MARCGRAVIACEJE. [Hypogynous Exogens. 



All the species occur in equinoctial America, except the doubtful genus Antholoma, 

 which is a native of New Caledonia. 



They are handsome and cm'ious plants, remarkable for theii' singular cucullate bracts. 

 The stem, root, aud leaves of Marcgi'avia umbellata are regarded in the West Indies as 

 diuretic and antisiphyhtic. 



GENERA. 

 Ruyschia, Jacq. I Loghania, Scop. I Ascium, Schreb. I Marcgra\'ia, Plum. 



Souroubea, Anbl. Norantea, Aubl. Schwarzia, Fl. Flum. ? Antholoma, Labill, 



Sunibea, Mey, 



Numbers. Gen. 4. Sp. 26. 



Ubenucece. 

 Position. — Clusiacese.— MARCGRAviACEiE. — Hj^ericacese ? 



