ASPERUGO. ECHINOSPERMUM. 227 



Tr. III. LITHOSPERMEJE. Nuts 4, affixed to an hypogy- 

 nous disk, their base not excavated but attached by a flat or 

 rather convex surface. 



8. ECHIUM. Cal. in 5 deep segments. Cor. subbellshaped ; 

 throat dilated, naked ; limb irregular. Stam. exserted ; fila- 

 ments very long, unequal. Style bifid. Nuts wrinkled, at- 

 tached by a flat triangular base. 



9. PULMONARIA. Cal. tubular, 5-fid. Cor. funnelshaped, its 

 throat naked. Stam. included in the tube ; filaments very 

 short. Styles simple. Nuts smooth, attached by their trun- 

 cate base which has a central tubercle. 



10. MERTENSIA. Cal. in 5 deep segments. Cor. bellshaped, 

 with a short thick cylindrical tube with 5 minute protuber- 

 ances in its throat. Stam. protruded beyond the throat ; 

 filaments elongate. Style simple. Nuts smooth, inflated, 

 rather drupaceous, attached laterally near their base by a fiat 

 surface ; seeds free. 



11. LITHOSPERMUM. Cal. in 5 deep segments. Cor. funnel- 

 shaped, throat naked or with 5 minute scales. Stam. in- 

 cluded in tube ; filaments very short. Style simple. Nuts 

 smooth or tubercular, stony, attached by a truncate fiat base. 



12. MYOSOTIS. Cal. 5-parted. Cor. contorted in (Estivation, 

 salvershaped ; throat closed with scales ; limb 5-fid, obtuse. 

 Stam. included; filaments very short. Style simple. Nuts 

 smooth, convex externally, keeled within, attached by a mi- 

 nute lateral spot near their base. Distinguished from all 

 the other genera by the contorted aestivation of its corolla. 



Tribe I. Cynoglossea. 



1. ASPERUGO Linn. Madwort. 



1. A. procumbens (L.). E. B. 661. St. procumbent, angular, 

 rough with short decurved bristles. L. oblong, rough, hispid, 

 lower ones stalked, upper sessile. Fl. small, axillary, solitary, 

 blue, upon short peduncles. Cal. of the fr. much enlarged. 

 Rich waste ground, rare. A. VI. VII. E. S. 



2. ECHINOSPERMUM Sw. 



[1. E. Lappula (Lehm.); st. branched above, 1. lanceolate 

 adpressed-hairy, cor. exceeding the calyx, fr.-st. erect, nuts with 

 a double series of barbed spines on the margins the disk and 

 sides tubercled. St. 43. 16. St. and 1. covered with adpressed 

 hairs giving them a silky appearance. Closely resembling a Myo- 



