22 



3 to 5) in the intervals, 6 to 10 on the commissural side. Seed 

 with round or angled back, face from plane to deeply concave, 

 with or without a central longitudinal ridge. 



* * * Fruit with broad and equal corky ribs (intervals very narrow), 

 depressed stylopodiuni. and solitary oil-tubes. 



22. Oreoxis. Calyx-teeth prominent. Fruit globose, 

 slightly flattened laterally if at all, glabrous. Carpel with very 

 thick and prominent corky ribs, each with a large group of 

 strengthening cells. Oil-tubes 2 on the commissural side, and a 

 small one in each dorsal rib. Seed sulcate beneath the oil-tubes, 

 with somewhat concave face. 



23. iEthusa. Calyx-teeth obsolete. Fiuit ovoid-globose, 

 slightly flattened dorsallv, glabrous. Carpel witli thick s>.arp ribs, 

 and no strengthening cells except in their very tips. Oil-tubes 2 

 on the commissural side. Seed-face plane. 



24. Coelopleurum. Calyx-teeth obsolete. Fruit globose to 

 oblong, slightly flattened laterally if at all, glabrous. Carpel with 

 very thick and prominent corky ribs (none of them winged), each 

 with a large group of strengthening cells. Oil-tubes small, 2 to 4 

 on the commissural side, and 1 or 2 under each rib (in addition to 

 the one in the interval), all adhering to the seed, which is loose in 

 the pericarp, and with jolane or somewhat concave face. 



* * * * Fruit with very thick and corky lateral ribs, filiform (or some- 

 what prominent) dorsal and intermediates, depressed stylopodium (except 

 in CunosciudiHtii), and solitary oil-tubes (except in Orogenia). 



25. Orogenia. Calyx-teeth minute. Fruit oblong, very 

 slightly flattened laterally, glabrous. Carpel much flattened 

 dorsally, with filiform tlorsal and intennediate ribs; laterals exces- 

 sively corky thickened, involute (that is, extended towards the 

 other carpel, leaving between the commissural faces a cavity, 

 which is divided longitudinally by a thick coi ky projection from 

 the middle of each face); all with distinct groups of strengthening- 

 cells. Oil-tubes very small, 3 in the intervals, 2 to 4 on the com- 

 missural side. Seed-face slightly concave. 



26. Crantzia. Calyx-teeth small. Fruit globose, slightly 

 flattened laterall}', glabrous. Carpel with filiform dorsal and in- 

 termediate ribs; laterals verv thick and cork\- next the commissure; 



