POLEMON1ACEAE (PHLOX FAMILY) 



3 POLEMONIACEAE. Phlox Family. 

 i PHL6X. 



1 a Plant prostrate; leaves linear, usually evergreen, op- 



posite or in whorls GROUND PINK. (P. subulata*) 



b Plants not completely as in a 2 



2 a Calyx lobes triangular, not pointed, about ^4 the length 



of the calyx tube 



WILD SWEET WILLIAM. (P. maculata.) 

 b Calyx lobes pointed or awned, % or more the length 



of the calyx tube 3 



3 a Plant 2-6 ft. high; flowers in branched, cymose panicles 



GARDEN PHLOX. (P. paniculata*) 

 b Plant V&-2 ft. high; flowers in cymes or corymbs 4 



4 a Flowers blue BLUE PHLOX. (P. divaricafa.) 



b Flowers not blue 5 



5 a Leaves opposite; flowers %-% in. broad; calyx lobes 



awn-like DOWNY PHLOX. (P. pilbsa.) 



b Leaves mostly alternate; flowers %-i in. or more broad; 

 calyx lobes lanceolate 



DRUMMOND'S PHLOX. (P. drummondii*) 



2 GILIA GILIA. (G. tricolor.*) 



3 POLEM6NIUM JACOB'S LADDER. (P. van bruntiae*) 



4 COBAfeA CATHEDRAL BELLS. (C. scdndens*) 



4 HYDROPHYLLACEAE. Water-leaf Family. 



i HYDROPHfLLUM. 



1 a Leaves pinnately divided into 5-7 ovate-lanceolate seg- 



ments VIRGINIA WATER-LEAF. (H. virginianum.) 



b Leaves rounded, palmately 5-9-lobed 



BROAD-LEAVED WATER-LEAF. (H. canadense.) 



2 PHACfcLIA WHITLAVIA. (P. whitlavia*) 



3 NEM6PHILA NEMOPHILA. (N. insignis*) 



5 BORAG1NACEAE. Borage Family. 



1 HELIOTR6PIUM. .COMMON HELIOTROPE. (H. peruvianium*) 



2 CYNOGL6SSUM. 



i a Flowers reddish-purple or white; upper leaves lanceo- 

 late HOUND'S- TONGUE. (C. officinale.) 



b Flowers blue ; upper leaves oblong 



WILD COMFREY. (C. virginianum.) 



3 LAPPULA. 



i a Leaves %-2 in. long; flowers blue 



EUROPEAN STICKSEED. (L. Idppula.) 

 b Leaves 2-8 in. long; flowers nearly white 



VIRGINIA STICKSEED. (L. virginiana.) 



4 MERTfiNSIA BLUEBELLS. (M. virginica.) 



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