LABIATAE 159 



Plants ascending or procumbent. 



Corolla 2" long. 5. V. bracteosa. 



Corolla 6" or more long. 



Corolla reddish-purple. 6. V. Canadensis. 



Corolla bluish-purple. 7. V. bipinnatifida. 



1. V. urticaefolia L. Pubescent, 2-5 high : leaves ovate-oblong, ser- 

 rate : spikes filiform, much elongated : flowers scattered. Common in 

 fields and waste places. June-September. 



2. V. hastata L. Puberulent, 2-6 high : leaves oblong- lanceolate, 

 serrate, sometimes 3-lobed : spikes slender, densely flowered. Not un- 

 common in fields and waste places. May-September. 



3. V. angustifolia Michx. Slightly pubescent, 6 x -2 high : leaves 

 somewhat toothed : spikes slender, densely flowered : flowers blue. 

 Common in barrens throughout the southern part. June-September. 



4. V. stricta Vent. Soft-pubescent, 2-4 high : leaves serrate : spikes 

 stout, closely flowered : flowers blue. Abundant in fields and waste places. 

 June-September. 



5. V. bracteosa Michx. Eough-pubescent : leaves pinnately incised, 

 usually 3-parted : spikes dense and stout, with long bracts : flowers blue. 

 Common in sandy soil and in waste places. April-September. 



6. V. Canadensis (L.) Britton. WILD VERBENA. Somewhat pubes 

 cent : leaves more or less pinnately parted and toothed, often 3-cleft : 

 flowers showy, 6"-8" broad, in dense capitate spikes : bracts usually not 

 longer than the calyx. Common on rocky prairies and in barrens through- 

 out the southwestern part. May-September. 



7. V. bipinnatifida Nutt. Eesembles the last but has smaller deeper 

 purple flowers, the leaves are more divided and the bracts often surpass 

 the calyx. Found at Sheffield and Courtney as a waif. May-September. 



2. PHYLA Greene. 



Corolla somewhat 2-lipped, the lower lip 3-lobed, the upper notched. 



1. P. lanceolata (Michx.) Greene. FOG-FRUIT. Extensively creep- 

 ing, appressed- pubescent : leaves ovate to oblong-lanceolate, serrate above : 

 flowers in dense capitate spikes on peduncles exceeding the leaves. Com- 

 mon in wet places. June-October. 



FAMILY 108. LABIATAE B. Juss. 



Aromatic herbs with square stems, opposite leaves and no stipules. 

 Divisions of calyx five, rarely four. Corolla gamopetalous, 4-5-lobed, 

 regular or 2 lipped. Stamens four, or two. Ovary superior, 4-lobed, or 

 4-parted, each cell containing a single erect ovule. Style solitary, 

 2-lobed at the summit. Fruit of four 1-seeded nutlets. 



Corolla regular or nearly so. 



Flowers blue. 2. ISANTHUS. 



Flowers white ; fertile stamens four. 19. MENTHA. 



Flowers white ; fertile stamens two. 18. LYCOPUS. 



Corolla irregular. 



