KEY. 227 



fruit becoming a depressed, globose, 10-celled, 10-seeded, 

 purple berry. Flowers white, racemed. Leaves alternate. 



Phytolacca decandra, L. 



653. Ovaries 4. Perianth 4-parted. Flowers in spikes 



or little heads. Leaves stipulate, mostly alternate or almost 



opposite. Aquatics. Fotamogetom, L. 



Ovary 3 . Styles 4. Perianth of 4 sepals. (Petals 



wanting.) Leaves opposite, linear-subulate, or spatulate. 



gagina apetala, L. 



054. Trees or shrubs 655 



Herbaceous plants ... 664 



65o. Ovary superior 659 



Ovary inferior 656 



650. Stamens 8-10 (occasionally fewer). Flowers per- 

 fect, or polygamous 657 



Stamens 4, or 5. Flowers never polygamous. 

 Fruit a drupe, or berry 658 



607. Trees. Flowers dioeciously-polygamous. Ovary 1- 

 celled. Drupe 1-seeded, ovoid, blackish-blue. Pistillate 

 floioers in peduncled clusters of 3 (2-5), much larger than the 

 staminate ones (rarely single) ; calyx truncate, or a mere rim; 

 petals very small, or early deciduous; stamens 5-10. Stami- 

 nate floioers in peduncled clusters of 5-9 ; calyx truncate ; 

 2)etals, 5 ; stamens 10 (5-12) on a disk ; pistil none, 



Nyssa (859). 



Shrubs. Flowers all perfect. Ovary 4- to 5-celled. 



Berry many-seeded. Stamens 8-10. Calyx-teeth minute, or 



a mere rim. Anthers opening by terminal pores. Corolla 



bell- or urn-shaped, 4- to 5-toothed. (514) Vaccinium. 



658. Stamens 4. Style 1. Calyx very small, minutely 

 4-toothed. Fruit a drupe, with a 2-seeded stone. Leaves 

 opposite, entire. (277) Cornus. 



Stamens 5. Styles 2. Petals small or minute, on 

 the top of the 5-lobed calyx-tube, alternate with its at 

 length reflexed segments. Fruit a berry. Low shrubs, often 

 prickly. Leaves alternate and lobed. (286) Ribes. 



659, Stvles or stigmas 2. Flowers polygamous. Trees. 



662 



