CHORIPETALAE 47 



Leaves undivided, exstipulate. Flowers in spikes, racemes, panicles, or 

 fascicles. Ovary 3 — ^4-celled. Styles i — ^4 525 



525. Stamens as many as and opposite the petals, 4 — ^5. Style simple. Flowers 



in racemes or fascicles 59. Olacaceae. 



Stamens as many as and alternate with the petals or twice as many. 526 



526. Stamens as many as the petals, 4 — 10. Seeds albinniiious. 



187. Cornaceae. 

 Stamens twice as many as the petals, 6 — 8, but the alternate ones some- 

 times without anthers. Sepals and petals valvate in bud. Styles 3 — 4. 

 Flowers polygamous. Seeds exalbuminous. Leaves alternate. 



177. Rhizophoraceae. 



527. (507.) Ovules 2 — 4 in each ovary-cell 528 



Ovules more than 4 in each ovary-cell 537 



528. Stamens as many as the petals or fewer 52g 



Stamens twice as many as the petals or more 533 



529. Stamens, at least apparently (by coalescence), fewer than the petals, 



2 — 4. Flowers 5-merous, unisexual. Ovary inferior. Usually herba- 

 ceous and tendril-bearing plants. Leaves alternate. 



223. Cucurbitaceae. 



Stamens as many as the petals, 4 — 5, free or nearly so. Trees or shrubs, 



rarely imdershrubs 530 



530. Stamens opposite the petals. Petals valvate in bud. Ovary inferior. 



Style simple ; stigma entire. Leaves opposite, exstipulate. 



Olinia, 170. Oliniaceae. 



Stamens alternating with the petals. Ovary usually half-inferior. Leaves 



opposite, but stipulate, or alternate 531 



531. Leaves exstipulate, alternate. Flowers hermaphrodite, 5-merous. Ovules 



pendulous. Seeds with a minute embryo and abundant albumen. 



100, Bruniaceae. 

 Leaves stipulate 532 



532. Calyx large. Petals 5, usually two-cleft. Stigmas 2 — 3. Ovules pendu- 



lous. Fruit indehiscent. Seeds exalbuminous. Leaves alternate. 



Dichapetaliim, 121. Dichapetalaceae. 



Calyx small. Petals imbricate in bud. Style simple or wanting. Ovules 



erect, rarely pendulous, but then leaves, at least those of the flowering 



branches, opposite 129. Celastraceae. 



533. Stamens twice as many as the petals. Petals with valvate aestivation. 



Stjde I. Seeds albuminous. Leaves opposite or whorled, stipulate. 



177. Rhizophoraceae. 



Stamens more than twice as many as the petals. Petals with imbricate 



or contorted aestivation. Seeds exalbuminous 534 



534. Style I, with a single stigma. Ovules in the whole ovarj^ 4 or more. 



Leaves exstipulate 535 



Style I, with 2 — 5 stigmas, or styles 2 — 5. Sepals 5. Leaves alter- 

 nate 536 



