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. 
* * * I’ruit with broad and equal corky ribs (intervals very narrow), 
depressed stylopodium, 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. Fruit ovoid-globose, 
slightly flattened dorsally, glabrous. Carpel with thick sharp ribs, 
and no strengthening cells except in their very tips. Oil-tubes 2 
on the commissural side. Seed-face olane. 
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 plane or somewliat concave face. 
. * * * * Fruit with very thick and corky lateral ribs, filiform (or some- 
what prominent) dorsal and intermediates, depressed stylopodium (except 
in Cynosciadium) , 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 dorsal and intermediate 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 corky 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 laterally, glabrous. Carpel with filiform dorsal and in- 
termediate ribs; laterals very thick and corky next the commissure; 
