KEY 13 



Flowers Regular page 



Petals none, sepals 4, petal-like Viorna 78 



Petals separate, 4-6 Lythrum 154 



Petals more or less united 



Flowers few, in terminal cluster 



Dasystepliana 202 



Flowers many, in terminal cluster ... Phlox 184 



Flowers in umbels Asclepiadaceae 177 



B. Leaves Alternate 



C. FLOWERS IN HEADS (which may resemble solitary 

 flowers) 



Flowers tubular or strap-shaped Compositae 228 



Flowers of 5, minute, separate petals. Eryngium 162 



C. FLOWERS NOT IN HEADS 



Flowers More or Less Irregular 



Petals 3 ( 1 minute ) Commelina 35 



Petals 5 Leguminosae 104 



Petals united, fls. short-spurred Linaria 200 



Petals united, fls. not spurred Lobelia 220 



Flowers Regular 

 Petals Separate 



Petals 3, sepals green Tradescantia 36 



Petals 3, sepals blue or purple Iridaceae 49 



Petals 4 Cakile 86 



Petals 5, fls. large, solitary Passiflora 148 



Petals 5, fls. small, in clusters Riedlea 141 



Petals More or Less United 



Flowers in terminal clusters Nama 184 



Flowers in spikes Plumbago 167 



Flowers in umbels Asclepiadaceae 177 



Flowers axillary, showy . . . . Convolvulaceae 181 



Flowers axillary or in racemes, small 



Campanulaceae 219 



FLOWERS YELLOW, YELLOWISH, OR ORANGE 



A. TREES, SHRUBS, OR WOODY VINES PAGE 



B. Leaves Opposite, Toothed or Compound 



Leaves compound Stenolobium 212 



Leaves not compound Lantana 191 



B. Leaves Opposite, Entire 



C. flowers of separate petals 



Petals 4, stamens 8 Rhizophora 156 



Petals 4 or 5, stamens many Hypericaceae 142 



