SYMPETALAE 67 



757. Flowers in cymes. Petals slightly cohering at the base. Leaves undivided. 



Alangium, 178. Alangiaceae. 

 Flowers in umbels, heads, racemes, or spikes. Petals usually united 

 throughout their whole length. Leaves usually compound. 



185. Araliaceae. 



758. (749.) Stamens as many as or fewer than the divisions of the corolla. 759 

 Stamens more numerous than the divisions of the corolla. . . . 769 



759. Leaves opposite or whorled 760 



Leaves alternate 764 



760. Leaves stipulate, undivided. Stamens as many as corolla-lobes, inserted 



on the corolla, with free filaments. .... 219. Rubiaceae. 

 Leaves exstipulate. 761 



761. Flowers unisexual. Seeds exalbuminous. . . 223. Cucurbitaceae. 

 Flowers hermaphrodite. Stamens as many as corolla-lobes. Seeds 



albuminous 762 



762. Stamens free from the corolla or nearly so. Corolla with valvate aestiva- 



tion. Usually herbs 224. Campanulaceae. 



Stamens evidently inserted upon the corolla, 5. Corolla with imbricate 

 or contorted aestivation. Usually shrubs or trees 763 



763. Flowers more or less irregular. Corolla with imbricate aestivation. 



Style stigmatose at the apex. Fruit a berry. Shrubs. 



220. Caprifoliaceae. 



Flowers regular. Corolla with contorted aestivation. Style stigmatose 



below the apex. Ovary 2-celled 200. Apocynaceae. 



764. Leaves stipulate, entire. Stamens 5. Ovary 2 — 3-celled with 2 ovules 



in each cell. Seeds exalbuminous. Shrubs or trees. 



Dichapetalum, 121. Dichapetalaceae. 



Leaves exstipulate, rarely stipulate, but then more or less deeply divided 



or stamens fewer than 5 or ovules numerous 7^5> 



765. Flowers unisexual or polygamous, 5-merous, regular, rarely somewhat 



irregular, in the latter case, as usually, stamen? fewer than the divisions 

 of the corolla . Seeds exalbuminous. . . . 223. Cucurbitaceae. 

 Flowers hermaphrodite, rarely unisexual or polygamous, but then 

 irregular. Stamens as many as the divisions of the corolla. Seeds 

 albuminous. Leaves entire, toothed, or lobed 766- 



766. Corolla with contorted aestivation. Ovary 2-celled. Style simple, stig- 



matose beneath the thickened apex 200. Apocynaceae. 



Corolla with imbricate (not contorted) or valvate aestivation. Style 

 stigmatose at the apex or between the apical lobes. .... 767 



767. Corolla imbricate in bud, regular. Ovary 2-celled, with 2 — 4 ovules in 



each cell. Style simple with 2 stigmas or 2-parted. Shrubs or under- 



shrubs 100. Bruniaceae. 



Corolla valvate in bud, rarely inibricate, but then irregular or ovules 

 numerous. Style simple 7"°' 



