XX KEY TO THE ORDERS. 



AbistoloChiace^. — Calyx 3-lobed, dull purple inside. 



Ovary 6-celled 182 



Santalaoe^. — Low plants with groenish-white flowers in 

 terminal clusters. Calyx-tube prolonged, and 

 forming a neck te the 1-oelled nut-like fruit 195 



El-BAGNACE-d. — Shrubs with scurfy leaves. Flowers per- 

 fect or dioscions. Calyx 4-parted, in the fertile 

 flowers apparently adherent to the ovary, anil' 

 becoming fleshy in fruit 194 



" * * Calyx inferior (plainly free from the ovary). 



H- varies Tnore than one and separate from each other. 



Kanunculace.'k. — Calyx present, coloured and petal-like. 



Achenes containing several seeds, or only one , . 2 



EuTACEJ!. — Prickly shrubs, with compound transparent- 

 dotted leaves, and dioecious flowers 43 



-1- -i-^ Ovary only one, hnt with more than one cell (except in 

 Glaux). 



Ckassulack.*:. — Herbs, iu wet places. I'od 5-cellcd and 5- 



horned •. 78 



I'HYTOj.AOCACEiK.— Herbs. Ovary 10-oelIed and 10-seeded. 183 



Euphoe.btaue.'k.— Herljs. Ovary 3-celled, 3-lobed, pro- 

 truded on a long pedicel. J uioe milky 195 



Sai'INdacejs.— Trees. Ovary 2-celled and 2-lobed. Fruit 

 two 1-seeded samaras joined together. Flowers 

 polygamous 47 



RiiAMNACE-t: —Shrubs. Ovary 3-celled and 3-seeded'; 



forming a berry 45 



FicoiDEJS. — Ih-ostrate herbs with whorled leaves. Ovary 



3-celled, many-seeded 86 



Uuticace^. — Trees. Leaves simple. Ovary 2-ceiled, but 

 fruit a 1-seeded samara winged all round. Stig- 

 "i'i-a2 198 



Glaux, in 



Primulace,!;.— Herbs. Ovary 1-celled, the placenta cen- 

 tral 145 



"^~ •!- -I- Ovary onbj one, 1-celled and 1-seeded. 



POLYGOSACB/E. —Herbs. Stipules sheathing the stem at 



tlie nodes igo 



