KEY TO THE ORDERS. 



. Shrubs with scurfy leaves. Flowers dioe- 

 cious. Calyx 4-parted, in the fertile flowers appar- 

 ently adherent to the ovary, and becoming fleshy 

 in fruit... ................................ 123 



* * * 



Calyx inferior (plainly free from the ovary). 

 -^Ovaries more than one and separate from each other. 



RANUNCULACE.*:. Calyx present, coloured and petal-like. 



Achenes containing several seeds, or only one 2 



RUTACE.E. Prickly shrubs, with compound transparent- 

 dotted leaves, and dioecious flowers 27 



ii- Ovary only owe, but with more than one cell. 



CRASSTTLACE^E. Herbs, in wet places. Pod 5-celled and 5- 



horned 48 



PHYTOLACCACE.E. Herbs. Ovary 10-celled and 10-seeded. 116 



EUPHORBIACE^E. Herbs. Ovary 3-celled, 3-lobed, pro- 

 truded on a long pedicel. Juice milky 125 



SAPINDACE.E. Trees. Ovary 2-celled and 2-lobed. Fruit 

 two 1 -seeded samaras joined together. Flowers 

 polygamous , 31 



RHAMNACE^E. Shrubs. Ovary 3-celled and 3-seeded ; form- 

 ing a berry , 29 



FICOIDE.E. Prostrate herbs with whorled leaves. Ovary 



3-celled, many-seeded 52 



URTiCACEuE. Trees. Leaves simple. Ovary 2-celled, but 

 fruit a 1 -seeded samara winged all round. Stigmas 

 2... 127 



+- +- +- Ovary only owe, 1-cetted and 1-seeded. 



POLYGON ACELE. Herbs. Stipules sheathing the stem at 



the nodes 119 



URTICACE.E. Herbs. Stigma 1. Flowers monoecious or 

 dioecious, in spikes or racemes. No chaff-like bracts 

 among the flowers. Or, Stigmas 2 ; leaves pal- 

 mately-compound 127 



AMARANTACE.E. Herbs. Flowers greenish or reddish, in 



spikes, w ith chaff- like bracts interspersed. Stigmas 2. 118 



CHENOPODIACE.E. Herbs. Flowers greenish, in spikes. 



No chaff-like bracts. Stigmas 2 116 



OLEACE^L Trees. Leaves pinnately-compound. Fruit a 1- 



seeded samara 115 



