358 THE PLANT PHYLA 



ium, Tulipa, Yucca, Asparagus, 

 Allium. 



Family 11. Stemonaceae; 12, Pontederiaceae; 13, 

 Cyanastraceae; 14, Philydraceae. 



Family 15. Commelinaceae. Spiderworts. Succu- 

 lent herbs with 3 or 2-celled pistil, 

 and 6 stamens. Commelina, Trades- 

 cantia. 



Family 16. Xyridaceae; 17, Mayaceae. 



Family 18. Juncaceae. Rushes. Herbs with stiff, 

 narrow leaves, and 1 to 3-celled pistil. 

 Juncus. 



Family 19. Eriocaulonaceae; 20, Thurniaceae; 21, 



Rapateaceae; 22, Naiadaceae. 



Order ARALES. Compound pistil mostly tricarpellary, 

 superior; ovules solitary. 



Family 23. Cyclanthaceae. 



Family 24. Araceae. Arums. Mostly herbs with 

 broad, petioled reticulate-veined 

 leaves; flowers small, clustered. 

 Acorus, Symplocarpus, Calla, Cala- 

 dium, Arum, Arisaema. 



Family 25. Lemnaceae. Duckweeds. Reduced 

 plants related to the Araceae, with 

 flat plant-body floating free on water. 

 Lemna, Spirodela. 



Order PALMALES. Compound pistil mostly tricarpellary, 

 superior; ovule usually 1; perianth 

 reduced to rigid scales. 



Family 26. Palmaceae. Palms. Trees or shrubs 

 with pinnate or palmate leaves. 

 Phoenix, Chamaerops, Calamus, Ore- 

 odoxa, Cocos. 



Order GRAMINALES. Compound pistil reduced to 2 or 

 3 carpels; ovule solitary; perianth re- 

 duced to small scales, or wanting. 



Family 27. Restionaceae; 28, Centrolepidiaceae; 29, 

 Flagellariaceae. 



Family 30. Cyperaceae. Sedges. Grass-like herbs 

 with 3-ranked leaves. Cyperus, Scir- 

 pus, Carex. 



