TO/ 



ACANTHACEAE, the Acanthus Family 



Herbs with opposite simple leaves; corolla of united petals, 2- 

 lipped or almost regular; stamens 2 or 4, attached to the corolla; 

 ovary 2-celled. 



la. Corolla about 10 mm. long; flowers in dense heads (4 10 dm. 

 high; flowers blue or white, summer) 



Water Willow, Dianthera americana. 

 Ib. Corolla about 30 mm. long; flowers axillary (3 8 dm. high; 



flowers blue, in summer) (Ruellia) 2. 

 2a. Foliage glabrous or slightly pubescent 



Ruellia, Ruellia strepens. 

 2b. Foliage densely hirsute Ruellia, Ruellia ciliosa. 



PHRYMACEAE, the Lopseed Family 



Herb with opposite leaves and irregular flowers in long slender 

 spikes; petals united, corolla 2-lipped; stamens 4, attached to the 

 corolla; ovary 1-celled. 



One species only, 5 10 dm. high; flowers purple, in summer 



Lopseed, Phryma leptostachya. 



PLANTAGINACEAE, the Plantain Family 



Herbs with basal leaves and small white flowers in spikes; sepals 

 4; petals 4, united; stamens 4; ovary 2-celled. 



la. Leaves linear (1 4 dm. high; summer) 2. 



Ib. Leaves broader, lanceolate to broadly ovate or cordate (sum- 

 mer) 3. 



2a. Spikes mixed with bracts several times longer than the 

 flowers Buckhorn, Plantago aristata. 



2b. Bracts about as long as the flowers 



Plantain, Plantago purshii. 



3a. Leave's cordate, pinnately veined; plant of wet ground and 

 marshes (4 8 dm. tall) Plantain, Plantago cordata. 



3b. Leaves with 3 to many longitudinal ribs or veins 4. 

 4a. Leaves densely pubescent with grayish hairs 5. 

 4b. Leaves smooth or slightly pubescent 6. 



5a. Flower-stalks 3 6 dm. high Plantain, Plantago media. 



5b. Flower-stalks less than 3 dm. high Plantain, Plantago virginica. 



6a. Flower-stalks 3 6 dm. high; spikes not over 10 cm. long 



English Plantain, Plantago lanceolate. 



6b. Scapes 1 4 dm. high; spikes long and slender, usually 



equaling or longer than the peduncle; dooryard plantains 1. 



7a. Leaves green at the base Plantain, Plantago major. 



7b. Leaves reddish at the base Plantain, Plantago rugelii. 



