£38 DIDYNAMIA.— ANGIOSPERMIA. 



386. TRICHOSTEMA. Blue curls. Labiate. 



T. dichotoma: leaves rhombic lanceolate, attenuate 

 at the base, pubescent. 



HAB. Dry hills. July — Sept. 0. Plant aroma- 

 tic. — Stem 6 — 10 in. high, brach. ; fl. blue. 



0. linearis : leaves linear, smoothish. 



HAB. Sandy fields. Stem viscidly pubescent. 



ANGIOSPERMIA. 



387. PHRYMA. 



P. leptostachya. 



HAB. Rocky woods. July — Aug. U. Stem 2 — 

 3 ft. high; leav. loose, ovate, dent., petiol. ; spikes 

 very long, slend. ; fl. purp. ; fr. reflex. 



388. VERBENA. Vervain. Verbenaceoz. 

 *. Leaves laciniate. 



1. V. hastata : erect ; leaves lanceolate, acuminate, in- 



cisely-serrate ; inferior ones lobed or subhastate ; 

 spikes filiform, erect, panicled ; flowers tetrandrous. 

 HAB. Low grounds. July — Aug. H- . Stem 3 — 

 5 ft. high ; leav. rough ; fl. purp. 



2. V. spuria : stem decumbent, much branched, diva- 



ricate ; leaves many-cleft ; spikes filiform, loose ; 

 bracts longer than the calyx. 

 HAB. Sandy fields. Aug. Nov. $. Stem 1 — 2 

 ft. long ; leav. scab. ; fl. pink. 



**. Leaves entire. 



3. V. urticifolia : erect, subpubescent ; leaves oval- 



acute, serrate, petiolate spikes filiform, loose, axil- 

 lary and terminnl ; flowers tetrandrous. 

 HAB. Fields and road-sides. July — Aug. %. Stem 

 2 — 3 ft. high ; spik. not imbric. ; fl. wh. 



4. V. angustifolia : erect, mostly simple ; leaves li- 



near-lanceolate, attenuate at the base, remotely 

 toothed, with elevated veins ; spikes filiform soli- 

 tary, axillary and terminal. 



