KEY 



7. plants like tiny trees; flowers greenish. 



Cistacece (Lechea). 



8. leaves glandular-dotted, flowers star-shaped, 



yellow with darker centre, or scarlet. 



Primulacew. 



9. plant pale-green; flowers small, pink. 



Gentianacece (Centaurium) . 



10. stems having milky juice; flowers lilac-green or 



dull crimson, lavender-brown or orange-red. 



Asclepediacece. 



11. leaves very narrow; flowers tubular, with flaring 



lobes yellow or purple. Scrophulariacece. 



12. flowers having longer or shorter pistil, whitish to 



blue. Rubiacece (Houstonia). 



ALTERNATE. 



1. lower leaves smaller than the upper, flowers 



greenish- white. Santalacece. 



2. stems jointed, with papery sheaths at the joints, 



or leaves swollen at jointure with stem. 



Polygonaceae. 



3. leaves fleshy; mid- vein continued into a prickle. 



Chenopodiacece (Salsola). 



4. leaves extremely narrow, flowers very small, 



greenish; or stem bushily branched, flowers 

 yellow. Cistacece. 



5. parts of flowers in 4's or multiples of 4's, flowers 



magenta or yellow; fruit a capsule. Onagracece. 



6. leaves fat; flowers star-shaped, yellow. 



Crassulacece (Sedwri). 



7. flowers irregularly-shaped, magenta, white sta- 



mens. Polygalacece. 



8. flowers pink, green sepals, alternating with petals. 



Gentianacece (Sabatia). 



9. flowers funnel-formed, white to blue. 



Boraginacece. 



10. leaves very narrow; flowers lipped and spurred, 

 lavender or yellow. Scrophulariacece (Linaria). 



