POLEMONIACEAE (PHLOX FAMILY) 183 



E. Stems coarse; calyx-lobes obtuse; corolla lobes obtuse or rounded. E. 



C. cephalanthi (sage dodder) 

 EE. Stems fine; calyx lobes acute; corolla lobes lanceolate-subulate. C. E. 



C. calif omlca 

 AA. Corolla scales crenulate; stigmas filiform. 

 F. Calyx lobes not keeled; corolla lobes triangular, acute. W. 



C. eplthymum (alfalia dodder) 

 FF. Calyx lobes keeled; corolla lobes ovate, obtuse. E. C. planiflota 



POLEMONIACEAE (Phlox Family) 



Herbs or shrubs. Stipules none. Flowers perfect, regular; 

 calyx s-lobed to -parted, persistent. Corolla s-lobed. Stamens 5, 

 ' distinct, in the corolla tube, alternate with the corolla lobes. 

 Ovary superior; style I, j-lobed or -cleft. Fruit a capsule, j-celled, 

 loculicidal. Seeds small. — Several genera are too difficult for 

 beginners. (F. & R. pp. 31I-316.) 



A. Calyx distended and at length burst by the capsule; leaves opposite or alter- 

 nate. 



B. Leaves opposite, entire; plant perennial; corolla salverionn. PHLOX (p. 183) 

 BB. Not as above in all of the first 3 points; corolla often not salverform. 



GILIA (p. 183) 

 AA. Calyx not distended nor burst by the capsule; leaves alternate. 



C. Calyx teeth spine-tipped; leaves compound; stamens inserted at unequal 

 heights in the corolla-tube. NAVARRETIA (p. 183) 



CC. Calyx teeth herbaceous, not spine-tipped. 

 D. Leaves compound, pinnate; leaflets entire (except P. confertum); stamens 

 inserted equally high in the corolla tube; corolla rotate to funuelform. 



POLEMONroM (p. 184) 

 DD. Leaves simple, entire or pinnately or palmately dissected; stamens in- 

 serted at unequal heights in the corolla tube; corolla salverform to funnelfonn. 



COLLOMIA (p. 184) 

 PHLOX (Phlox) 



Herbs. Leaves opposite or some of the upper ones alternate. Flowers 

 large. Calyx s-ribbed. — (Gk. phlox = flame ; the name of some flame- 

 colored flower.) 



GILIA (GiLiA) 



Herbs or shrubs. Leaves opposite or alternate. CoroUa funnelform or 

 tubular or campanulate or salverform. — (Honor of F. Gil, a Spanish 

 botanist.) 



NAVARRETIA (Navarretia) 



Herbs, annual, low. Flowers small, in headlike clusters ; clusters leafy- 

 bracted. Calyx tube with five prominent great angles or veins, scarious 

 between the angles ; lobes unequal. CoroUa tubular-funnelform to salver- 

 form. — (Honor of Navarrete, a Spanish physician.) 



