BORAGIXACEAE (BORAGE FAMILY) 



68? 



875. O. virginianum. 



and sterile or sandy soil, s. Ont. , Ind. , and Mich, to N. Dak. , Tex. , and westw. 

 Apr. -July. 



11. 0N0SM6dIUM Micbx. False Gromwell 



Divisions of calyx linear and erect. Corolla tubular, or tubular-fun n el-form 

 (the sinuses minutely hooded-inflexed), the 5 acute lobes converging or barely 



spreading. Anthers oblong-linear or arrow-shaped, 

 mucrouate, inserted in the throat. Style ihread- 

 form, much exserted. Nutlets bony, ovoid, erect ; 

 the scar not hollowed out. — Chiefly perennial herbs, 

 coarse and hispid, with oblong and sessile rib-veined 

 leaves, and white, greenish, or yellowish flowers in 

 at length elongated and erect leafy raceme-like 

 clusters ; fl. in summer. (Named from a likeness to 

 the genus Onosma, meaning ass-smell.) 



* Corolla-lobes laiice-sitbulate, 2-3 times as long as 



icide. 



1. 0. virginianum (L.) A. DC. Clothed with harsh 

 and rigid appressed short bristles; stems rather 

 slender, SS dm. high ; leaves narrowly oblong or 

 oblong-lanceolate, 3-9 cm. long, the lower narrowed 

 at base; nutlets 2-2.8 mm. long, irregularly pitted, 

 not conspicuously constricted at base. — Dry banks, 

 sandy hillsides, etc., Mass. to Fla. and La. Fig. 875. 



* * Corolla-lobes deltoid, scarcely longer than broad. 



■«- Stem hispid, villous, or hirsute to the base. 



++ Silky-pubescent; nutlets conspicuously pitted. 



2. 0. m611e Michx. Finely grayish-pubescent ; the lowest leaves oblanceo- 

 late, the others ovate to ovate-lanceolate, conspicuously veined, acutish ; calyx 

 silky as well as sparingly hirsute ; nutlets 3 mm. long, pitted, sometimes slightly 

 constricted at the base. (0. carolinianum, var. Gray, in part.) — Old fields and 

 cedar barrens, Ky\ and Tenn. 



++ -w. Strigose to hirsute ; nutlets scarcely or not at all pitted. 



3. 0. occidentale Mackenzie. Stoutish and somewhat rigid, 4-6 dm. high, 

 rather finely but copiously grayish-pubescent ; leaves lanceolate to narrowly 

 lance-ovate, strongly rib-veined, 4-8 cm. long, 1-1.8 cm. 

 wide, with pubescence mostly appressed or subappressed ; 

 nutUts rounded and not at all constricted at the base. (0. 

 carolinianum. var. molle Gray, in part.) — Alluvial soil, 

 sandy or gravelly banks, etc., 111. to Sask., Col., and N. Mex. 

 Var. SYLVESTRE Mackenzie. Taller, 1 m. or more high, less 

 canescent and more shaggy-hirsute in the manner of the 

 next species, but with nutlets unconstricted at the base. — 

 111. and Mo. 



4. 0. hispidissimum Mackenzie. Stout, erect, 10-12 dm. 

 high, green, coarsely^ hirsute throughout ; stem-leaves ovate, 

 8-10 cm. long, 1.8-4 cm. wide, the pubescence mostly spread- 

 ing ; nutlets about 3 mm. long, icith a very short neck or 

 constriction at the base, brownish tinged. (O. carolinianum 

 Man. ed. 6, not DC.) — River-banks, rich bottoms, etc., 

 N. Y. and s. Ont. to Neb., and south w. Fig. 876. Yar. macrospermim Mac- 

 kenzie & Bush, with larger and more shining white nutlets nearly 4 mm. long, 

 is distinguishable in 111. and Mo. 



-t- -(- Stem essentially smooth and glabrous below. 



5. 0. subsetbsum Mackenzie & Bush. Stem erect, nearlj^ or quite glabrous 

 to the middle, dm. or more in height ; leaves narrowly lanceolate, finelv 



876. O. hi.sj)idissimum. 



