VERBENACEAE (VERVAIN FAMILY) 



5 MYOS6TIS. 



1 a Calyx lobes with appressed hairs, without hooked or 



glandular ones ; flowers blue 2 



b Calyx lobes with spreading hairs, some either hooked or 



glandular ; flowers blue or white 3 



2 a Calyx lobes much shorter than the calyx tube; flowers 



M: in. or more broad ; plant often cultivated 



FORGET-ME-NOT. (M. palustris*) 



b Calyx lobes as long as the calyx tube; flowers less than 

 x /4 in. broad ; plant not cultivated 



SMALL FORGET-ME-NOT. (M. Idxa.) 



3 a Calyx nearly regular; flowers blue, rarely white 



FIELD SCORPION -GRASS. (M. arvensis.) 

 b Calyx somewhat 2-lipped ; flowers white 



EARLY SCORPION-GRASS. (M. virginica.) 



6 LITHOSPERMUM. 



i a Corolla without scales in the tube; mature nutlets 



brown, rough CORN GROMWELL. (L. arvense.) 



b Corolla with scales in the tube; mature nutlets white, 



smooth COMMON GROMWELL. (L. officinale.) 



7 ONOSM6DIUM FALSE GROMWELL. (O. virginianum.) 



8 SYMPHYTUM. 



i a Plant covered with soft hairs; leaves lanceolate to ovate 



COMMON COMFREY. (S. officinale.*) 



b Plant covered with bristly hairs; leaves ovate to lanceo- 

 late ROUGH COMFREY. (S. asperimum*) 



9 BORAGO BORAGE. (B. officinalis*) 



10 fiCHIUM BLUEWEED. (E. vulgare*) 



6 VERBENACEAE. Vervain Family. 

 i VERBENA. 



1 a Cultivated species ; flowers Vi in. or more broad 



GARDEN VERBENA. (V. hybrida*) 

 b Wild species ; flowers less than Vs in broad 2 



2 a Leaves pinnatifid or 3-cleft, the lobes incised or toothed 



EUROPEAN VERVAIN. (V. officinalis.) 

 b Leaves not completely as in a 3 



3 a Spikes very loosely flowered 



WHITE VERVAIN. (V. urticifblia.) 

 b Spikes rather densely flowered except toward the base. . 4 



4 a Leaves 2-6 in. long, lanceolate to oblong, the lower ones 



sometimes 3-lobed BLUE VERVAIN. (V. hastata.) 



b Leaves 1-3 in. long, linear to narrowly oblanceolate 



NARROW-LEAVED VERVAIN. (V. angustifblia.) 



2 CARY6PTERIS BLUE SPIREA. (C. mastacdnthus*) 



3 CALLICARPA FRENCH MULBERRY. (C. americana.*) 



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