CHORIPETALAE 33 



359- (343-) Petals with valvate aestivation. Trees or shrubs. . . . 36a 

 Petals with imbricate or contorted aestivation 362 



360. Sepals free. Petals and stamens hypogynous. Anthers opening by an 



apical pore Elaeocarpus, 139. Elaeocarpaceae. 



Sepals united below. Petals and stamens more or less perigynous. An- 

 thers opening by two longitudinal slits 361 



361. Calyx entire or nearly so. Leaves^ alternate. . 145. Scytopetalaceae. 

 Calyx more or less deeply divided. Leaves opposite or whorled. 



177. Rhizophoraceae. 



362. Calyx with valvate aestivation 363 



Calyx with imbricate aestivation 366 



363. Leaves exstipulate, undivided, opposite. Ovules ascending or hori- 



zontal. Seeds exalbuminous. . . . . . . 149. Guttiferae. 



Leaves stipulate. Petals 5 364 



364. Filaments free. Anthers opening by two slits. . . . 141. Tiliaceae. 

 Filaments evidently united 365 



365. Anthers opening by a single slit 142. Malvaceae. 



Anthers opening by two slits. Stigmas 3 or 5. 



Dombeya, 144. Sterculiaceae. 



366. Stem herbaceous or woody at the base 367 



Stem woody throughout. Leaves undivided 368 



367. Sepals and petals with contorted aestivation. Ovary 3-celled. Stigmas 



I — 3. Fruit opening loculicidally. Leaves entire. 154. Cistaceae.. 

 Sepals and petals with imbricate aestivation. Stamens 15. Ovary 5- 

 celled. Stigmas 5. Fruit opening septicidally. Leaves stipulate. 



107. Geraniaceae. 



368. Leaves stipulate 369 



Leaves exstipulate 370 



369. Sepals 3, surrounded by a 3 — 5-toothed involucre. Disc cup-shaped. 



Fruit dehiscent Sarcochlaena, 140. Chlaenaceae. 



Sepals 5. Disc wanting. Fruit indehiscent. 150. Dipterocarpaceae. 



370. Leaves alternate. Ovules pendulous 148. Theaceae. 



Leaves opposite. Ovules ascending or horizontal. 149. Guttiferae 



371. (320.) Stamens as many to twice as many as petals, 4 — 12. . . . 372 

 Stamens more than twice as many as petals 3^2 



372. Filaments free 373 



Filaments obviously united, at least at the base Z77 



373. Stipules present, but sometimes very small and caducous. . . . 374 

 Stipules wanting, but axillary spines sometimes present. . . . 37^ 



374. Leaves opposite or whorled. Flowers hermaphrodite. Stamens 8 — 10. 



98. Cunoniaceae. 

 Leaves alternate 375 



375. Style I, 2^3-cleft, with undivided branches. Stamens 5. Disc present. 



Sepals imbricate in bud. Petals usually 2-cleft. Fruit a drupe or nut. 

 Seeds exalbuminous. . . . Dichapetahim, 121. Dichapetalaceae. 



