202 PENTANDRIA. MONOGYNIA. pulmonaria,- 



tubo corollae breviore, kc. G ro n- Virg. 20. P lu k. Phyt. 

 t. 227. f. 6. 



Root perennial. Stein angular, a little branched towards the top. 

 Lower leaves about 3 inches long, more or less obovate, very 

 obiuse, smooth and a little glaucous. Flowers in terminal ra- 

 cemes or fascicles. Calyx with lanceolate acute segments. 

 Corolla large, bright blue ; tube straight, 5 — 6 times longer 

 than the calyx ; border obscurely S-h^bed. Stafnens rather 

 shorter than the corolla; filaments very slender; anthers ob- 

 long. Style fiiiform, exserted ; stigma simple. 



Hab. On the banks of rivers. Kear Albany, New-York. Eu' 

 ton. in Pennsylvania. May. Muhlenberg. 



This species is referred hy Le hm en n to the genus Litho- 

 9PERMUM, with which it agrees in many respects, though I 

 think it is more nearly allied to Pulmonaria. All the North 

 American species belong lo Ro t h' s genus Mertensia. 



133. LITHOSPERMUM. L. Lehraann. 



Calyx 5- parted ; segments acute, carinate. Corolla 

 jnfundibuliform ; border 5-lobed ; orifice naked. Sta- 

 mens included within the tube of the corolla. Stigtna 

 obtuse, bifid. Seeds imperforate at the base, indurated, 

 shining. Gen. pi. 241. hehm. Asperifol. p. 3. 



Nutt. GCW. I. p. 113. LiTHOSPERMUM Z., BaTS- 



CHiA Gin el., PuLMONARiiE spp. L., &c. Nat. Ord. 



'BoR AGIN EJE Jus S. GfOmiVclL 



1. L. attense L. : stem erect, branched ; kaves linear- 

 lanceolate, rather acute, veinless, hairy; calyx nearly as long 

 as the corolla, with spreading segments ; seeds rugose. 

 Willd. 6/>ec. I. p. 731. Lehm. Aspe.rif. p. 321. Eng. 

 Bot. t. 123. P ursh Fl.l.^.\3\. E i li o 1 1 Sk,l. t^.225. 

 Roem. ^ SchultAW. p. 43. 



iJoor annual. Plant hispidly pilose. Stem S — 12 inches high, 

 much branched from the root. Leaven sessile ; the lower 

 ones li'j^'ulate, obtuse. Flowers solitary, axillary, nearly sessile. 

 Calyx with linear, acute segments Corolla small, white with 

 a tinge of red. Seeds brown, rugose when ripe. 



Hab. In corn fields and waste places ; common. April — July. 

 Introduced. 



2. L. oficinah L, : stem erect, much branched ; leaves 

 lanceolate, acute, nerved, scabrous above, hairy beneath ; 

 calyx as long as the tube of the corolla ; seeds smooth. 

 Willd, Spfc. I. p. 731. Lehm. Aspenf. [i. 310. Eng, 

 Bot. t. 134. Muhl. Cat. p. 18. (cxcl. syn. Mich.) 

 Bo em. i^ Schult. IV. p. 42. 



