158 VERBENACEAE 



6. ONOSMODIUM Michx. False Geomwbll. 

 Flowers greenisb--white in elongated, leafy racemes : corolla tnbnlar, 

 not appendaged, its lobes acute : nutlets smootb, bony. 



Plant green or greenisb-yellow. 1. 0. Carolinianum. 



Plant grayisb-green. 2. 0. molle. 



1. O. Carolinianum (Lam.) DC. 2°-4J° bigb, very rougb-pubes- 

 cent : leaves oblong-lanceolate, acute : nutlets 1 J" long, ovoid-globose. — 

 Frequent tbrougbout in dry ground. June-July. 



2. O. molle Miobx. l°-2° bigb, grayisb, less pubescent : leaves ovate- 

 lanceolate, acute : nutlets 2" long, ovoid.— Frequent on prairies tbrougb- 

 out tbe soutbern part. May-June. 



7. SYMPHYTUM L. 



Eougb-bairy perennials witb flowers in raceme-like clusters. Corolla 

 tubular, inflated, its lobes obtusisb. Scar left by nut broad, concave, 

 toothed. 



1. S. officinale L. Comfeey. 2°-3° bigb : leaves ovate-lanceolate, 

 decurrent on tbe stem : corolla yellowisb-wbite, 8" long — Sparingly 

 escaped from cultivation at Independence. June-July. 



8. ECHIUM L. 



Bristly-bairy herbs with flowers in leafy-bracted spikes. Corolla tubu- 

 lar-funnel-form, its limb witb unequally spreading lobes. Styles and 

 stamens exserted. 



1. E. vulgare L. Blueweed. 1°-3° bigb : leaves oblong to linear- 

 lanceolate, sessile : flowers reddish-blue, nearly V long. Earely adven- 

 tized along railroads near SbefSeld and Lee's Summit. June-August. 



FAMILY 107. VERBENACEAE J. St. Hil. 

 Herbs with opposite leaves and perfect flowers. Divisions of calyx and 

 corolla five each. Stamens four, didynamous, alternate with tbe corolla 

 lobes. Ovary superior, 2-4-oelled, each cell 1-ovuled, separating at ma- 

 turity into 2-4 indebiscent nutlets. Style one. Stigmas one or two. 



Nutlets four. 1. Verbena. 



Nutlets two. 2. Phyla. 



1. VERBENA L. Vervain. 

 Flowers in spikes, bracted. Corolla somewhat irregular, its limb 5- 

 lobed. Ours are perennials. Many hybrids occur. 



Plants strictly erect. 

 Leaves distinctly petioled. 



Flowers white. 1. V. uHicaefolia. 



Flowers blue. 2. V. hastaia. 



Leaves sessile. 



Leaves linear to lanceolate. 3. V. angustifolia. 



Leaves ovate to oblong. 4. V. stricta. 



