Tribe III. Mitrephore*. PetaU valvate in bud, 
outer spreading ; inner dissimilar, concave, con- 
nivent, arching over the stamens and pistils, 
(divergent in some Mitrephvras). Stamens many, 
(few in Orophea), closely packed ; anther-cells 
(except in Orophea) concealed by the overlapping 
connectives. Pistils numerous (few in some Oro- 
pheas). 
Inner petals clawed. 
Inner petals connivent in a cone, bnt 
not vaulted ... ... 14. Qoniothalamus. 
Inner petals vaulted, 
Stamens about 6, Milinsoid ; inner 
petals longer than the outer ... 15, Orophea, 
Stamens numerous, Uvarioid | inner 
petals not longer or very little 
longer than the outer ... 16. Mitrephora. 
Inner petals not clawed. 
Flowers globose ; petals snbequal 17. Popowia. 
Flowers elongate; inner petals much 
shorter than the outer ... ... 18. Oxymitra. 
Tribe IV. Xtlopiejc. Petals valvate in bud, thick 
and rigid, connivent ; the inner similar but smaller, 
rarely 0. 
Outer petals broad ; torus convex ... 19. Melodonun. 
Outer petals narrow, often triquetrous ; 
torus flat or concave ... ... 20. Xylopia. 
Tribe V. Miliusea. Petals valvate in bud, the 
outer sometimes very small like the sepals. Sta- 
men* often definite, loosely imbricate ; anther- 
cells (except in Phmanthtts) not concealed by 
the connectives. Ovaries solitary or indefinite. 
Ovaries indefinite. 
Sepals and outer petals similar and minute j 
inner petals very large, often cohering by 
their edges. 
Ovules 1 or 2 : stamens numerous, 
quadrate, with broad truncate 
apical processes concealing the 
anther-cells from above ... 21. Pkteantku*. 
•J52 
