KEY. 



237 



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 1 . Styles 4. Perianth of 4 sepals. (Petals 

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



Sagiua apetala, L. 



654. Ti-ees or shrubs 655 



Herbaceous plants 664 



655. Ovary superior 659 



Ovary inferior •. . . . 656 



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

 ■fect, or polygamous .657 



Stamens 4, or 5. Flowers never j)olygamous. 

 Fruit a drupe, or berry , 658 



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

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

 flowers 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 flowers in peduncled clusters of 5-9; calyx truncate; 



.;.,petal8, 5; stamens 10 (5-12) on a disk; pistil none. 



i,, - Nyssa(859). 



• :i Shrubs. Flowers all perfect. Ovary 4- to 57celled. 



j -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 6-toothed. (514) Vaccinium. 



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

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

 opposite, entire. (27V) 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. 



639. Styles or stigmas 2. Flowers polygamous. Trees. 



662 



