170 COMMON" CANADIAN WILD PLANTS. 



6. MERTEN'SIA, Roth. LUNGWORT. 



1. M. panicula'ta, Don. Filaments broad and short. 

 Nutlets wrinkled when dry. Plant more or less hairy, erect, 

 loosely branched. N.W. 



2. M. marit'ima, Don. (SEA-LUNGWORT.) Corolla white, 

 trumpet-shaped, conspicuously 5-lobed, throat crested. 

 Leaves fleshy, glaucous, ovate to spathulate. Stems spread- 

 ing, often decumbent. Filaments longer and narrower than 

 the anthers. Nutlets shining. Atl. sea-coast. 



T. ONOSMO'DIITM, Michx. FALSE GROMWELL. 



1. 0. Carolinia'num, DC. Stem stout, 3-4 feet high. 



Leaves ovate- lanceolate, acute. Lobes of the corolla ovate- 

 triangular, very hairy outside Banks of streams. 



2. 0. Virglna'num, DC. Stem slender, 1-2 feet high. 

 Leaves narrowly oblong. Lobes of the corolla lance-awl- 

 shaped, sparingly bearded outside with long bristles. Banks 

 and hillsides j not common. 



8. LITHOSPER'MUltt, Tourn. GROMWELL. PUCCOON. 

 * Corolla almost white. Nutlets wrinkled, gray. 



1. L. arven'se, L. (CORN GROMWELL.) Stem 6-12 inches 

 high, erect. Leaves lanceolate or linear. Waste grounds 

 and in wheat-fields. 



* * Corolla deep yellow. Nutlets smooth and shining. 



2. L. hirtum, Lehm. (HAIRY PUCCOON.) Stem 1-2 feet 

 high, hispid. Stem-leaves lanceolate or linear ; those of 

 the flowering branches ovate-oblong, ciliate. Flowers 

 peduncled. Corolla woolly at the base inside. Dry woods. 



3. L. canes 'eens, Lehm. (HOARY PUCCOON. ALKANET.) 

 Stem 6-15 inches high, soft-hairy. Corolla naked at the 

 base inside. Flowers sessile. Limb of the corolla smaller, 

 and the calyx shorter, than in No. 2. Open woods and 

 plains. 



4. L. angUStifO' Hum, Michx. Erect or diffusely branched 

 from the base, somewhat hoary. Leaves all linear. Flow- 

 ers pedicelled, leafy-bracted, of two sorts : the earlier large 

 and conspicuous, the later small and pale. N.W. 



