774 FLORA. 



pressed, narrowed at the base, indistinctly veined, 1-4 cm. long, the uppermost 

 smaller; flowers sessile or nearly so. white, alxjut6 mm. long; calyx-segments linear- 

 lanceolate, Longer than or equalling the corolla- tube; corolla funnelfonn, puberulent 



in the throat; nutlets glabrous, about 2 mm. high, convex on the back, keeled on 

 the inner side, one-third to one-half the Length oi the calyx-segments, In waste 

 places and fields, Quebec to Ont., Mich., Ga. and Kans. Nat. from Europe. 

 May-Aug. 



2. Lithospermum officinale L. Gromwell. (I. F. f. 3044.) Finely 

 puberulent; stem 6-12 dm. high, leafy. Leaves few-veined, sessile, 3-10 cm. 

 long, the upper surface rough; flowers yellowish white, about 4 mm. long, sessile; 

 calyx-segments linear-lanceolate, about equalling the corolla-tube: corolla funnel- 

 form, crested in the throat; style about as long as the stamens; nutlets about 3 mm. 

 high, ovoid, obtuse, seldom all ripening. In fields and waste places, Ont. to 

 N. Y., west to Minn. Nat. from Europe, May-Aug. 



3. Lithospermum latifolium Michx. American Gromwell. (I. F. f. 

 3045.) Rough-puberulent; stem 6-9 dm. high, the branches long and slender. 

 Leaves pinnately veined, 5-13 cm. long, 2-5 cm. wide, or the uppermost smaller; 

 flowers yellowish white or pale yellow, 4-6 mm. long, few; calyx-segments linear- 

 lanceolate, about as long as the corolla; corolia funnelfonn, crested in the throat; 

 style shorter than the stamens; nutlets globose-ovoid, about 4 mm. long. In dry 

 thickets and fields. Ont. and western N. V. to Minn.. Va.. Kans. and Ark. May. 



4. Lithospermum pilosum Nutt. Woolly Gromwell. (I. F. f. 3046.) 

 Perennial from thick roots, hirsute; stems usually clustered, very leafy, 2-4.5 dm. 

 high. Leaves 5-10 cm. long, 4-10 mm. wide, gradually acuminate, sessile, indis- 

 tinctly veined; flowers crowded in a terminal leafy thyrsus; calyx-segments densely 

 hirsute, shorter than the cylindric corolla-tube; corolla salverform, the throat 

 puberulent below each lobe; style longer than the filaments; nutlets ovoid, acute, 

 white, shining, about 4 mm. long. Western Neb. (according to Williams); Mont. 

 to theN. W. Terr.. Br. Col. and' Cal. May-July. 



e Lithospermum Gmelini (Michx.) A. S. Hitchcock. Hairy Puccoon. 

 (I. F. f. 3047.) Perennial, hispid-pubescent, or scabrous; stems rather stout, 

 ■3-6 dm. high, very leafy. Leaves lanceolate, sessile, 5-8 cm. long, the lowest 

 commonly reduced to appressed scales, the uppermost oblong ; flowers 12-18 mm. 

 lone, in short terminal leafy racemes, dimorphous; calyx-segments linear-lanceo- 

 late-' corolla salverform; corolla-lobes rounded, the throat crested, the tube bearded 

 at tlie base within by 10 hirsute teeth; nutlets white, shining, about 4 mm. high, 

 ovoid, much shorter 'than the calyx-segments. In dry woods, N. Y. to Fla., Minn., 

 Mont.! Colo, and N. Mex. April-June. 



6. Lithospermum canescens (Michx.) Lchm. Hoary Puccoon. (I. F. f. 

 3048.) Perennial, hirsute, canescent at least when young; stems 1. 5-4.5 dm. 

 high." Leaves oblong, linear-oblong, or linear, sessile, 1-4 cm. long, the lowest 

 often reduced to appressed scales; flowers about 12 mm. long, sessile, numerous in 

 short Veafy racemes, dimorphous; calyx-segments linear-lanceolate; corolla saber- 

 form, crested in the throat, its lobes rounded, entire, its tube glandular within; 

 nutlets white, smooth, shining, acutish. much shorter than the calyx-segments. In 

 dry soil, Ont'. to N. J.. Ala. /the N. W. Terr., Kans. and Ariz. April-June. 



' 7. Lithospermum linearifdlium Goldie. Narrow-leaved Puccoon. 

 (I. F. f. 3040-) Perennial by a deep root, strigose -pubescent and scabrous; stem 

 I.5-6 dm. high. Leaves linear, sessile, acute or acutish, I 5 cm. long; flowers of 

 two kinds, in terminal leafy racemes; corolla of the earlier ones salverform. about 

 2.5 cm. long, bright yellow, the tube 3-5 times as long as the linear-lanceolate 

 calyx segments, the lobe< erose-denticulate, the throat crested: later flowers (some- 

 times all of them) much smaller, pale yellow, cleistogamous, abundantly fertile, 

 their pedicels recurved in fruit; nutlets white, smooth, shining, ovoid. 3-4 mm. 

 high pitted, keeled on the inner side. In dry soil. Manitoba to III., Kans., Tex., 

 Br. Col., Utah and Ariz. April-July. [L. angusti folium Michx., not Forsk.] 



12. ONOSMODIUM Michx. (Sec Appendix.) 



Perennial stout hispid or hirsute herbs, with alternate entire strongly veined 

 leave-, and rather small yellowish i»i greenish white proterogynous flowers, in 



