BORAGINACE^E. 251 



scales; the limb with obtuse lobes. Nuts fixed to a central 

 column, imperforate at base, aculeate on the margin. 



E. Lappula Lehm. : stem branched above ; leaves lanceolate or linear- 

 lanceolate, hairy ; corolla longer than the calyx ; border erect, spreading ; 

 nuts with two rows of hooked prickles on the margin. Myosotis Lappula, 

 Linn. Rochelia Lappula R. tf- S. 



Road sides. Can. to Virg. W. to Oregon. N. to Subarct. Amer. July, Aug. 

 (1). Stem a foot high, branched above. Flowers minute, blue, in leafy racemes. 

 Fruit erect. Introduced ? Common Stickseed. 



9. CYNOGLOSSUM. Linn. Hound 's-Tongue. 



(From the Greek KVW, a dog, and yXwo-o-a, a tongue ; in allusion to the shape 

 of the leaves.) 



Calyx 5 -parted. Corolla short, funnel-form; orifice closed 

 with convex connivent scales ; limb with 5 obtuse lobes. Nuts 

 depressed, affixed to the styles by their inner margin, echinate. 



1. C. officinale Linn.: silky-pubescent; lower leaves lanceolate, oblong, 

 attenuated into a petiole ; upper lanceolate, somewhat cordate or clasping 

 at base ; racemes without bracts ; lobes of the calyx oblong, obtuse, shorter 

 than the corolla. 



Road sides, &c. Can. to Virg. W. to Ohio. June. July. . Plant dull 

 green, soft and downy, fetid. Stem 1 2 feet high. Flowers purplish-red, in 

 naked secund racemes. Fruit rough. Introduced from Europe. 



Common Hound' s-tongue. 



2. C. Virginicum Linn.: hairy; lower leaves oval-oblong, petiolate; 

 upper lanceolate-oblong, sessile, clasping and cordate at base ; racemes 

 somewhat corymbose, naked; pedicels elongated, recurved-spreading ; lobes 

 of the calyx acute, villous, about half as long as the tube of the corolla. 

 C. ampkxicaule Mich. 



Shady woods. Can. to Car. W. to the Rocky Mountains. May, June. 

 1\.. Stem 2 3 feet high, very hairy. Radical leaves 6 inches long ; upper ones 

 smaller. Flowers blue or nearly white, in a terminal corymbose panicle con- 

 sisting of 2 or 3 divisions. Wild Comfrey. 



3. C. Morisoni D. C. : stem erect, somewhat hairy, divaricately branched ; 

 leaves ovate or lanceolate-oblong, acute, attenuate at base, scabrous above, 

 pubescent beneath ; racemes forked, bracteate ; pedicels at length deflexed ; 

 fruit covered with hooked bristles. Echinospermum Virginicum Lehm. 

 Myosotis Virginiana Linn. 



Borders of woods, &c. Can. to Car. W. to Ken. July. .Stem 23 

 feet high. Leaves thin and membranaceous ; lower ones petioled. Flowers 

 small, pale blue or white, in forked terminal racemes. 



Small-jlowered Hound 1 s-tongue. 



10. MERTENSIA. Roth. Mertensia. 

 (In honor of F. C. Mertens, a German botanist who wrote upon the Algae.) 



Calyx short, 5-cleft or 5-parted. Corolla with the tube cy- 

 lindric, the limb somewhat campamilate, 5-cleft ; throat naked 



