The Flora of the Cayuga Lake Basin 21 



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 n. Disk wanting. 



o. Placentae parietal ; foliage punctate. 



Hypericaceae 300 

 o. Placenta free-central ; foliage not punctate. 



Caryophyllaceae 198 

 /. Style 1, stigmas 1-4 (placentae parietal). 

 in. Placentae 2-5. 



;/. Calyx deciduous, often caducous. 



o. Sepals 2 or united, falling very early. 



Papaveraceae 220 

 o. Sepals 4, falling while in flower. 



Capparidaceae 235 

 n. Calyx persistent in fruit. 

 n. Flowers regular. 



p. Sterile stamens wanting Cistaceae 301 



p. Sterile stamens present Pamassia 239 



o. Flowers irregular Violaceae 302 



in. Placenta 1. 

 n. Stamens as many as the petals and opposite them ; 

 anthers opening by uplifting valves, or basal 



leaves peltate Berberidaceae 218 



n. Stamens more numerous than the petals ; anthers 

 not opening by uplifting valves. 



Ranunculaceae 207 

 j. Ovary 2-many-celled. 



k. Plants aquatic; leaves deeply cordate. .. .Nymphaeaceae 205 

 k. Plants terrestrial. 



/. Style dilated, umbrella-like; leaves tubular. 



Sarraceniaceae 235 

 /. Style ordinary ; leaves not tubular. 



in. Anthers opening by terminal pores, often inverted. 



Ericaceae 329 

 ;;/. Anthers opening longitudinally. 

 n. Stamens tetradynamous or 2 ; ovary 2-celled. 



Cruciferae 222 

 n. Stamens not tetradynamous nor 2. 

 o. Styles 2-7 or stigmas 5. 



p. Ovules numerous in each cell. 



q. Leaves alternate Penthorum 236 



(/. Leaves whorled, not punctate ; stamens 6. 



Trillium 148 

 q. Leaves opposite, punctate ; stamens many. 



Hypericaceae 300 



p. Ovules 1-2 in each cell Geraniaceae 284 



o. Style 1, stigmas 1-3. 

 p. Leaves parallel-veined ; petals 3, deliquescent. 



COMMELINACEAE 136 



p. Leaves netted-veined. 

 q. Leaves simple. 



r. Petals 3-5; stamens 2-many ... Cistaceae 301 



r. Petals 4 ; stamens 2 Lepidium 224 



q. Leaves pinnately divided. .Limnanthaceae 290 

 /. Woody plants. 

 g. Pistils several. 



/;. Leaves glandular-punctate, compound; stamens 4-5. 



Rutaceae 286 



