6 4 



BORAGINACEAE. 



[Voi,. III. 



2. Lithospermum officinale L. Gromwell. (Fig. 344-) 



Lithospermum officinale L. Sp. PI. 132. 1753. 



Perennial, finely puberulent; stem usually 

 much branched, 2-4 high, leafy. Leaves lan- 

 ceolate or oblong-lanceolate, acute at the apex, 

 narrowed at the base, few-veined, sessile, \% f - 

 4/ long, 3 // -i2 // wide, the upper surface rough; 

 flowers yellowish-white, about 2" long, sessile; 

 calyx-segments linear-lanceolate, about equal- 

 ling the corolla-tube; corolla funnelform, crested 

 in the throat; style about as long as the stamens; 

 nutlets, when mature, white, smooth, shining, 

 about 1%" high, ovoid, obtuse, more than one- 

 half as long as the calyx-segments, seldom all 

 ripening. 



In fields and waste places, Ontario to southern 

 New York, west to Minnesota. Plant grayish. Nat- 

 uralized from Europe. Native also of Asia. Called 

 also Graymile, Littlewale and Pearl-plant. May- 

 Aug. 



3. Lithospermum latifolium Michx. 

 American Gromwell. (Fig. 3045.) 



Lithospermum latifolium Michx. Fl. Bor. Am. 1: 



131. 1803. 



Perennial, rough-puberulent; stem branched, 

 2_3 high, the branches long and slender. 

 Leaves ovate or ovate-lanceolate, acuminate at 

 tlie apex, pinnately veined, 2 / -5 / long, i / -2 / 

 wide, or the uppermost smaller; flowers yellow- 

 ish white or pale yellow, 2 // -3 // long, few, soli- 

 tary, distant; calyx-segments linear-lanceolate, 

 about as long as the corolla; corolla funnelform, 

 crested in the throat; style shorter than the 

 stamens; nutlets white, shining, globose-ovoid, 

 about 2" long, more than one-half as long as 

 the calyx-segments. 



In dry thickets and fields, Ontario and western 

 New York to Minnesota, south to Virginia and 

 Arkansas. May. 



4. Lithospermum pildsum Nutt. 

 Woolly Gromwell. (Fig. 3046.) 



Lithospermum pilosum Nutt. Journ. Phil. Acad. 7: 



43- 1834. . , . 



Lithospermum Torreyi Nutt. loc. cit. 44. 1834. 



Perennial from thick roots, hirsute, rather pale 

 green; stems usually stout and clustered, very 

 leafy, S'-iS' high. Leaves lanceolate or linear- 

 lanceolate, 2 / -4 / long, 2 // -5 // wide, gradually acu- 

 minate to the apex, narrowed at the base, sessile, 

 indistinctly veined; flowers dull yellow, very 

 numerous and crowded in a terminal leafy thyr- 

 sus; calyx-segments densely hirsute, shorter than 

 the cylindric corolla-tube; corolla-sal verform, the 

 throat puberulent below each lobe; style longer 

 than the filaments; nutlets ovoid, acute, white, 

 shining, about 2 // long. 



Western Nebraska (according to Williams), Mon- 

 tana to the Northwest Territory, British Columbia 

 and California. May-July. 



