40 CHORIPETALAE 



445. Filaments free. Anthers opening at the apex. Style shortly 3-cleft. 



Ovules in several rows. Albumen abundant. Bracteoles absent. 



Clethra, 188. Clethraceae. 



Filaments united at the base. Ovules in two rows. Albumen scanty 



or wanting. Bracteoles present Asteropeia, 148. Theaceae. 



446. (439.) Petals and stamens perigynous, adnate to the ovary at the base, 



numerous. Filaments free. Sepals imbricate in bud. Leaves all 



radical, stipulate Nymphaea, 76. Nymphaeaceae. 



Petals and stamens hypogynous, free from the ovary. Petals 3 — 9. 447 



447. Leaves opposite, undivided, exstipulate. Seeds exalbuminous. 



149. Guttiferae. 

 Leaves alternate 448 



448. Petals 8. Sepals 5, imbricate in bud. Filaments free. Styles free. 



Seeds with a straight embryo and copious albumen. Herbs. Leaves 



dissected, exstipulate Nigella, 78. Ranunculaceae. 



Petals 3 — 5. Filaments united, at least at the base 449 



449. Sepals 5, free or nearly so, imbricate in bud. Albumen scant}' or wanting. 



Trees or shrubs. Leaves undivided, exstipulate. . 148. Theaceae. 

 Sepals 3 — 5, valvate or open in bud. Leaves stipulate 450 



450. Anthers opening by a single slit or pore 142. Malvaceae. 



Anthers opening by two slits or pores. . . . 144. Sterculiaceae. 



451. (189.) Styles united below or throughout their whole length. . . 452 

 Styles entirely free or loosely cohering above 457 



452. Anthers i-celled, opening by a single sUt. Stamens numerous. Fila- 



ments united. Disc not distinctly developed. Calyx with valvate 

 aestivation. Seeds albuminous. Leaves simple, stipulate. 



142. Malvaceae. 



Anthers 2-celled, opening by 2 slits or pores. Calyx with imbricate, 



more rarely with open or valvate aestivation, in the latter case leaves 



exstipulate 453 



453. Ovules solitary in each carpel. Trees or shrubs 454 



Ovules 2 or more in each carpel. Leaves exstipulate 456 



454. Receptacle more or less elongated. Stamens 10 or more. Fruits drupa- 



ceous. Seeds exalbuminous. Leaves undivided, stipulate. 



147. Ochnaceae. 

 Receptacle expanded into a disc. Leaves exstipulate 455 



455. Stamens inserted within the disc. Ovules ascending. 134. Sapindaceae. 

 Stamens inserted outside the disc 116. Simarubaceae. 



456. Sepals 3. Petals 6. Stamens numerous. Trees or shrubs. 



81. Anonaceae. 



Sepals 4 — 5. Petals 4 — 5. Stamens 4 — 10. Leaves translucently 



dotted 115, Rutaceae. 



457. (451.) Ovules sohtary in each carpel 458 



Ovules 2 or more in each carpel 470 



