KEY TO THE FAMILIES. g. 



15. Woody plants. 11 PALMAE. 

 Herbaceous plants. 12 ARACEAE. 



16. Anthers extrorse. Seeds exendospermic. 



(Triglochin) 7 SCHEUCHZERIACEAE. 



Anthers introrse. Seeds endospermic. 17. 



17. Anthers 1 celled. Flowers unisexual. Perianth dry. 



15 RESTIONACEAE. 

 Anthers 2 celled. 18. 



18. Flowers monoecious in heads surrounded by an involucre. 



17 ERIOCAULACEAE. 

 Flowers hermaphrodite, polygamous or dioecious. 19. 



19. Style 1 with 3 long, thin stigmas. Perianth dry. Leaves 



linear. 1 JUNCACEAE. 



Style 1 with 3 short thick stigmas or with 1 stigma or styles 3. 



20 LILIACEAE. 



20. Perianth all petaloid. 2l. 

 Perianth differentiated into calyx and corolla. 23. 



2\. Stamens 3. (Barberetta) 21 HAEMODORACEAE. 



Stamens 6. 22. 



22. Endosperm mealy. 1 ovule in each cell. Fruit a berry. Leaves 



ending in a tendril. (Flagellaria). 



14 FLAGELLARIACEAE. 

 Endosperm fleshy. Ovules usually many. 20 LILIACEAE. 



23. Ovary 1 celled. Leaves radical. Flowers in dense spikes. 



16 XYRIDACEAE. 

 Ovary 2-3 celled. Leaves alternate, bases sheathing. 



17 COMMELINACEAE. 



24. Stamen 1. Flowers irregular. 25. 

 Stamens more than 1. 26. 



25. Ovary 1 celled. Staminodes small or 0. 



27 ORCHID ACE AE. 

 Ovary 3 celled. Staminodes 1-3 petal like. 



26 ZINGIBERACEAE. 



26. Stamens 2-4, usually 3, sometimes with sterile ones as well. 27. 

 Stamens 5-6. 28. 



27. Flowers unisexual. Ovary 1 celled or incompletely 2 or more 



celled. (Lagarosiphon). 8 HYDROCHARITACEAE. 



Flowers hermaphrodite. Ovary 3 celled. 24 IRIDACEAE. 



28. Stamens 5 (Wild Bananas Strelitzia). 25 MUSACEAE. 



Stamens 6. 29. 



29. Flowers unisexual. Stems usually climbing. 



23 DIOSCOREACEAE. 

 Flowers hermaphrodite. Stems not climbing. 



22 AMARYLL1DACEAE. 



30. (4) Perianth wanting or simple or consisting of calyx and 



corolla. Petals, if present, free or cohering slightly, but 

 free at the base. (ARCHICHLAMYDEAE) 31. 



