Synopsis of the Natural Orders. 



51. Orobanchaceae. 



(Broom-rape Family). Leafless parasites. Stamens 4, didynamous. 



53. Labiatae. 



(Dead-nettle Family). Herbs with square stems and opposite leaves. 

 Corolla usually 2-lipped. Stamens 4 didynamous. Fruit of 4 

 nutlets. 



52. Verbenaceae. 



(Vervain Family). Herbs vi^ith opposite or whorled leaves. Stamens 

 4 didynamous. Ovary 4-celled. 



C — Apetalae 



(Corolla absent, and often the calyx also). 



I. MONOCHLAMYDEM [calyx present, corolla absent). 



* Ovary superior. 



+ Stigmas 2 — 3. 



60. Polygonaceae. 



(Buckwheat Family). Herbs with alternate leaves and sheathing 

 stipules. Flowers perfect. 



1)9. Chenopodiaceae. 



(Goosefoot Family). Herbs with exstipulate leaves and inconspicuous 

 green perfect flowers. 



66. Urticaceae. 



(Nettle Family). Herbs with monoecious or dioecious flowers. 



67. Ulmaceae. 



(Elm Family). Trees with perfect flowers. Ovary 2-celled. 

 tt Stigma undivided. 



61. Thymelaceae. 



(Mezereon Family). Shrubs with entire leaves and sweet-scented 

 flowers. 



** Ovary inferior. 



62. Loranthaceae. 



(Mistletoe Family). Parasitic shrubs with inconspicuous imperfect 

 flowers. 



63. Aristolochiaceae. 



(Birthwort Family). Herbs or shrubs with alternate exstipulate leaves. 

 Stamens 6 or 12. Ovary 4— 6-celled. 



65. Euphorbiaceae. 



(Spurge Family). Herbs with milky juice. Ovary 2 — 3-celled. 



