36 CHORIPETALAE 



Flowers regular. Stamens as many as the petals. Albumen scanty or 

 wanting 398 



398. Disc present. Leaves stipulate, usually opposite or compound. 



113. Zygophyllaceae. 

 Disc wanting. Staminodes in bundles alternating with the fertile stamens. 

 Sepals united below. Leaves exstipulate, alternate, undivided. 



Thomasset ia, 148. Theaceae. 



399. (391.) Calyx with valvate aestivation. Seeds exalbuminous ; embryo 



straight 173. Lythraceae. 



Calyx with imbricate or open aestivation 400 



400. Stem herbaceous. Leaves without glandular dots, exstipulate. Sepals 



4. Petals 4. Stamens 6. Ovary 2-celled. 



Subularia, 88. Cruciferae. 



Stem woody. Stamens 3 — 5, very rarely 6 — 8, but then sepals 5 and 



petals 5 401 



401. Leaves with glandular dots, alternate, exstipulate. Stamens 5 — -8. 



Ovary 2 — 3-celIed. Seeds exalbuminous. 



Heteropyxis, 180. Myrtaceae. 

 Leaves without glandular dots. Stamens 3 — 5. Ovary 3 — 7-celled. 402 



402. Leaves opposite, rarely alternate and then, as usually, stamens 3. Stamens 



inserted upon the disc. Filaments dilated. Ovary 3-celled. Seeds 



exalbuminous 130. Hippocrateaceae. 



Leaves alternate. Stamens 4 — 5, inserted below the edge of the disc. 

 Seeds albuminous 403 



403. Leaves stipulate. Ovary 3 — 5-celled. Fruit a capsule. Seeds with an 



aril 129. Celastraceae. 



Leaves exstipulate. Ovary 5 — 7-celled. Fruit a drupe. Seeds without 

 an aril Brexia, 96. Saxifragaceae. 



404. (390.) Stamens twice as many as the petals 405 



Stamens more than twice as many as the petals 416 



405. Petals and stamens hypogynous 406 



Petals, and usually also the stamens, perigynous. Leaves undivided. 413 



406. Filaments united in a tube, at least at the base 407 



Filaments free, rarely {Rutaceae) united in several bundles. . . 408 



407. Sepals valvate in bud, very rarely at first imbricate ; in this case many 



ovules in each ovary-cell and leaves undivided. Disc wanting. Leaves 



stipulate 144. Sterculiaceae. 



Sepals imbricate in bud. Ovules few in each ovary-cell, rarely many, 

 but then leaves pinnate. Disc usually distinctly developed. Leaves 

 exstipulate. Shrubs or trees 118. Meliaceae. 



408. Ovary distinctly stalked, entire. Seeds exalbuminous ; embryo curved. 



87. Capparidaceae» 

 Ovary sessile or nearly so 409. 



