The Flora of the Cayuga Lake Basin 19 



PAGE 



k. Ovary 2-many-celled, or ovaries several. 

 /. Ovary 1, 5-celled, 5-lobed; plants not tall. 



Penthorum 236 

 /. Ovary 1, 10-celled, unlobed; tall, coarse plants. 



Phytolaccaceae 197 

 /. Ovary 1 or several, 1-celled; leaves compound or deeply 



lobed Ranunculaceae 207 



/. Ovary 1, 3-celled, or 3 and each 1-celled ; leaves not 

 lobed nor compound. 

 m. Flowers minute, greenish. 



n. Leaves whorled, netted- veined Aizoaceae 198 



n. Leaves not whorled. 



o. Leaves netted- veined, not grass-like; dicotyle- 

 dons EUPHORBIACEAE 287 



o. Leaves parallel-veined, grass-like; monocotyle- 

 dons JUNCAGINACEAE 52 



m. Flowers larger, green or colored; leaves usually 

 parallel-veined ; monocotyledons. 



n. Perianth 2-lipped; seed solitary Pontederia 137 



n. Perianth regular; seeds 1-many Liliaceae 142 



/;. Woody plants. 



i. Flowers, at least the staminate ones, in aments. 

 /. Ovary dehiscent, with many comose seeds ; a glandular disk 



or lobe at base of each flower Salicaceae 161 



/. Ovary indehiscent, each cell with 1-2 naked seeds ; disk 

 wanting. 

 k. Ovary 1-celled. 



/. Fruit fleshy ; leaves broad Mortis 182 



/. Fruit dry or waxy; leaves lanceolate or oblanceolate. 



Myricaceae 171 



k. Ovary 2-celled ; leaves broad Betulaceae 174 



i. Flowers not in aments. 

 ;'. Flowers in dense globular pendent heads ; fruits long-hairy ; 



leaves angular Platanaceae 241 



;'. Flowers not as above. 



k. Plants recurved or brier-like, prickly, monocotyledons. 



Smilax 149 

 k. Plants ordinary shrubs or trees, dicotyledons. 

 /. Ovary 2-many-celled. 

 m. Styles 1-2. 



n. Fruit a double samara Aceraceae 293 



m. Fruit a single samara Fraxinus 340 



m. Styles 3-4 or 3-4-cleft Rhamnaceae 295 



/. Ovary 1-celled. 



m. Leaves and twigs peltate-scaly Elaeagnaceae 311 



m. Leaves and twigs not peltate-scaly. 

 n. Calyx tube cylindrical or urn-shaped. 



Thymelaeaceae 311 

 n. Calyx tube short or none. 



o. Flowers yellowish, often showy ; bark spicy ; 

 anthers opening by uplifting valves. 



Lauraceae 219 

 o. Flowers green or brown; bark not spicy; 



anthers not opening as above Urticaceae 180 



Corolla polypetalous (petals slightly coherent in Fumariaceae). 

 (3d e, p. 22.) 



