Seed Plants, Ferns, Fern Allies of the Austin Region 67 



Lantana horrida H. B. K. 



Common along roadsides and in dry ground. A low shrub with 

 clusters of orange flowers. 



Gulf states to Central America. 



Phyla nodiflora Green. (Lippia nodiflora L.) 



Common everywhere in dry ground, roadsides, etc. Abundant on 

 the University campus. A prostrate, creeping plant with small white- 

 ish flowers in very dense spherical or short cylindrical heads. 



Southeastern states and California. Warmer regions of both the 

 Old and the New World. 



Verbena bipinnatifida Nutt. Wild Verbena. Vervain. 



Very abundant in open ground. Our common verbena. A peren- 

 nial plant usually about 15 inches high, with conspicuous dense oblong 

 spikes of bright pink flowers. 



Prairie and plains states. From South Dakota to Mexico. 



Verbena cilvaia Benth. 



Dry ground. A low plant, with branches spreading over the ground. 

 Its flower clusters are similar to those of V. bipinnatifida, but smaller. 



Southern plains states. 



Verbena canescens H.B.K. 



Common in dry soil. University campus. A rather low plant with 

 clustered stems and densely gray hairy foliage. 



Texas to Arizona, and Mexico. 



Verbena officinalis L. Vervain. 



Very common in fields, roadsides, and waste places. An annual 

 plant one or two feet tall with slender stems and with small flowers 

 in long slender spikes. University campus. Perennial here. 



Eastern states. 



Verbena pumila Rydb. 



Common in waste places and dry ground. Very similar to V. ciliata. 

 Oklahoma and Texas. 



Vitex Agnus-Castus L. 



Occasional on the river flood plain. A shrub with digitately 5-7 

 foliate leaves. 



Southeastern states. 



