produced into straight avns , and with irregularly- 

 toothed marginal wings belo\' the awns. i^erissolobus. 



3. Petals in 1 or 2 series, all closely overlapping and sprea- 



ding in one plane as if in one series. 4 



Petals in 2-4 series, srreading or recurving more or less 

 laxly in different planes or series, 7 



4. Stamens and stair.inodes collected into a broad, coinpact cone 



that is fully exposed to view to its base. 5 



Stamens loosely erect, or the outer more or less spreading, 

 not collected into a compact cone; no staninodes. Leaves 

 somevihat elevate and semi-terete or trigonous, with 

 blunt angles in transverse section, and with the obtuse- 

 ly rounded apex covered v;ith white warts, '^aljx sub- 

 equally 6-lobed. Stignias 6, '^errucifera. 



5. Leaves viev/ed from above linear-lanceolate and often with 



parallel sides, or lanceolate, or ovate, acute, keeled 

 and trigonous at the apical part. Gglyx 5-lobed. 

 Stigmas 7-10. Ovary inferior. Cells Qt the fruit 

 quite open, either v;ithout cell-wings or with rudimen- 

 tary cell-wings that stand quite erect back to back; 

 no placental tubercle. (See ^ig. 106). Nananthus. 



Lepves spathulate, dilated into a more or less flattened 

 blade, very obtuse or rounded at the spex, and covered 

 with white or v;hitish-green pustules or warts of com- 

 pound structure under a microscope. Calyx 5 or 6- 

 lobed. CeMs of the fruit r 'Of ed v.'ith membranous cell- 

 wings; no placental tubercle. 6 



6. Stigmas 10-15. Ovf^ry and capsule half or more than half- 



superior, v;ith 10-13 valves and cells. Acaulon. 



Stigmas 5-6 (in one species represented as 5 or 9 or 10 ). 

 Ovary and capsule inferior, v/ith 5-6 valves and cells 

 (Fig. 107). Titanopsis. 



7. Leaves with pellucid dots v;hen hald against the light. 



Flowers with 3 or 4^series of conspicuous stamihodes 

 (barren stamens). Stigmas and valves and cells of the 

 oapsue 6-10, Valves of the capsule with an acute central 

 keel and the expanding-keels about half as long as the 

 valves and diverging from the base, without wings or 

 awns. Khadia. 



Leaves with either dark p'reen dots or opaque pustular 



dots. Staminodes few or none. 8 



8. Dots on the leaves often whitish when fully exrosed to the 



sun. Basal part of the stamens partly conceeled in the 

 cup formed by the base of the petals. Stigmas 6-10. 



Rabiea# 



Dots on the leaves dark green and the surface smooth and 



