SYMPETALAE 65 



calyx with imbricate aestivation. Seed albuminous. Flowers in 

 racemes or panicles. Leaves stipulate. Tendril-bearing shrubs. 



Ancistrocladiis, 166. Ancistrocladaceae, 



734. Leaves alternate 735 



Leaves opposite, whorled, or all radical 737 



735. Flowers unisexual. Seed exalbuminous. Climbing or prostrate plants. 



Stamens 2 — 5 223. Cucurbitaceae. 



Flowers hermaphrodite. Seed albuminous. Erect shrubs. Leaves un- 

 divided 736 



736. Corolla with imbricate aestivation. Stamens 4 or 5. Stigma i. Fruit 



dry, indehiscent. Flowers in terminal heads. Berzelia, 100. Bruniaceae. 

 Corolla with valvate aestivation. Stamens 6 or more. Stigmas 2 — 6. 

 Fruit succulent, drupaceous. Flowers in axillary cymes. 



Alangmm, 178. Alangiaceae. 



737. Style 3-parted. Stamens 5. Fruit drupaceous. Shrubs or trees. 



Viburnum, 220. Caprifoliaceae. 

 Style simple with i — 3 stigmas or 2-parted. Herbs or undershrubs. 738 



738. Stamens 5. Corolla with valvate aestivation. . . 219. Rubiaceae. 

 Stamens i — 4. Corolla with imbricate aestivation 739 



739. Flowers in heads. Calyx surrounded by an epicalyx. Stamens 2 — 4, 



Seed albuminous 222. Dipsacaceae. 



Flowers in cymose inflorescences, without an epicalyx. Stamens i — 3. 



Seed exalbuminous 221. Valerianaceae. 



74^- {y?)'^-) Ovules basal or apical or inserted upon a free central placenta. 741 

 Ovules inserted upon two or more i)arietal placentas 745 



741. Calyx of 2, corolla of 4 — 6 divisions. Stamens as many as and opposite 



the divisions of the corolla or more. Herbs or undershrubs. 



Portulaca, 73. Portulacaceae. 

 Calyx and corolla of 4 — 5 divisions each. Stamens as many or fewer. 742 



742. Ovules basal or apical. Stamens as man^^ as and alternate with the 



divisions of the corolla or fewer. Corolla usually with valvate aestiva- 

 tion 743 



Ovules inserted upon a free central placenta. Stamens as many as and 

 opposite the divisions oi the corolla. Corolla with imbricate aestiva- 

 tion. 744 



743. Flowers hermaphrodite. Stamens free. Ovules 4, basal. Stigma 



2-lobed. Seeds albuminous. Undershrubs. 



Merciera, 224. Campanulaceae. 

 Flowers unisexual or polygamous. Seeds exalbuminous. 



223. Cucurbitaceae. 



744. Staminodes alternating with the fertile stamens. Fruit a capsule. Herbs 



or undershrubs Samolus, 191. Primulaceae. 



Staminodes wanting. Fruit a berry or rut. Shrubs. 



Maesa, 190. Myrsinaceae. 



E 



