The Flora of the Cayuga Lake Basin 23 



PAGE 



i. Flowers ordinary, petaloid. 



;'. Plants woody Oleaceae 340 



j. Plants herbaceous. 



k. Ovule 1 in each of the 4 cells Verbenaceae 354 



k. Ovules 2-many in each of the 2 cells. 

 /. Capsule with elastic valves ; flowers in dense peduncled 



axillary spikes or heads Acanthaceae 378 



/. Capsule without elastic valves ; flowers not as above. 



SCROPHULARIACEAE 368 



/. Stamens 5, rarely 6 (see also 3d /). 



g. Ovaries 2, distinct or nearly so; juice usually milky; seeds with 

 hairy appendages. 

 h. Filaments distinct ; styles and stigmas united ; corolla convolute ; 



pollen granular Apocynaceae 343 



h. Filaments united; styles separate; stigmas united and fused with 

 the anthers ; corolla valvate or convolute ; pollen in masses. 



Asclepiadaceae 345 

 g. Ovary 1 ; seeds not appendaged. 



h. Ovary deeply 4-lobed Boraginaceae 350 



/;. Ovary not 4-lobed. 

 i. Ovary 1 -celled. 



j. Leaves 3-foliolate Menyanthes 343 



j. Leaves dentate, cleft, or pinnatifid Hydrophyllaceae 349 



;'. Leaves entire or nearly so, not as above. 



k. Stamens opposite the lobes of the corolla; placenta free- 

 central ; ovules many Primulaceae 337 



k. Stamens alternate with the corolla lobes; placentae 

 parietal. 



/. Leaves opposite ; ovules many Gentianaceae 341 



/. Leaves alternate; ovules 3-5 Convolvulaceae 346 



i. Ovary 2-5-celled. 

 j. Ovary 2-4-celled. 



k. Corolla plicate ; stamens often centrally connivent ; fruit 



frequently a berry Solanaceae 365 



k. Corolla not plicate ; stamens not conspiciously connivent ; 

 fruit dry. 

 /. Ovules numerous. 

 m. Ovary 2-celled. 



n. Corolla rotate Verbascum 369 



n. Corolla funnel- form Lyciam 367 



m. Ovary 3-celled Polemoniaceae 349 



/. Ovules 1-2 in each cell. 



m. Fruit a capsule ; plants sometimes without green 



color Convolvulaceae 346 



m. Fruit of 2-A nutlets; plants green. . .Boraginaceae 350 



j. Ovary 5-celled Rhododendron 333 



f. Stamens 6-many. 

 g. Flowers very irregular. 



h. Lip of corolla crested; sepals unequal, petaloid. .Pol ygalaceae 286 

 h. Lip of corolla naked; sepals equal, united, not petaloid. 



Trifolium 273 

 g. Flowers regular or nearly so. 



//. Ovary 1-celled ; green herbs Primulaceae 337 



//. Ovary 5- rarely 10-celled ; shrubs, suffrutescent herbs, or 



saprophytic non-chlorophyll-bearing herbs Ericaceae 329 



