xliv 



179a. Anthers united; stamens protruding from the very irregular 

 corolla LOBELIACEAE, p. 113. 



179b. Anthers separate; corolla almost regular 180. 



180a. Corolla rotate; some or all filaments hairy 



2, in SCROPHULARIACEAE, p. 101. 



180b. Corolla funnel-form, dull yellow and purple; filaments not 

 hairy 12a, in SOLANACEAE, p. 101. 



180c. Corolla funnel-form, blue or violet; filaments not hairy 



7b, in BORAGINACEAE, p. 94. 



181a. Leaves compound or dissected FUMARIACEAE, p. 41. 



181b. Leaves simple 182. 



182a. Flowers solitary ARISTOLOCHIACEAE, p. 25. 



182b. Flowers in spikes, heads, or racemes 



POLYGALACEAE, p. 65. 

 183a. Leaves truly compound 184. 

 183b. Leaves palmately cleft; flowers 15 mm. wide or larger 



6a, in RANUNCULACEAE, p. 36. 

 183c. Leaves irregularly cleft; flowers about 5 mm. wide 



RESEDACEAE, p. 48. 



184a. Petals prolonged backward into hollow spurs 



6b, in RANUNCULACEAE, p. 36. 

 184b. Petals not prolonged into spurs 



CAPPAR1DACEAE, p. 47. 

 185 



185a. Perianth consisting of one circle of parts only (usually con- 

 sidered to be the calyx) 186. 

 185b. Perianth consisting of both calyx and corolla 192. 



186a. Leaves with sheathing stipules encircling the stem above 

 the base of every leaf ' POLYGONACEAE, p. 25. 



186b. Leaves without sheathing stipules 187. 



187a. Leaves entire 188. 



187b. Leaves toothed, lobed, or compound 190. 



188a. Stamens 5 SANTALACEAE, p. 24. 



188b. Stamens 6 189. 



188c. . Stamens 10 PHYTOLACCACEAE, p. 30. 



189a. Perianth-lobes 3; perianth-tube curved 



ARISTOLOCHIACEAE, p. 25. 

 189b. Perianth-lobes 6, spreading 4a, in LILIACEAE, p. 11. 



190a. Stamens 5 UMBELLIFERAE, p. 80. 



190b. Stamens 6 191. 



190c. Stamens more than 6 RANUNCULACEAE, p. 35. 



