66 



BORAGINACEAE. 



[Vol. hi. 



12. ONOSMODIUM Michx. Fl. Bor. Am. i: 132. 1803. 



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

 leaves, and rather small yellowish or greenish white proterogynous flowers, in terminal leafy- 

 bractcd scorpioid spikes or racemes. Calyx deeply 5-parted, the segments narrow. Corolla 

 tubular or tubular-funnelform, 5-lobed, the lobes erect, the throat not appendaged, the sin- 

 uses slightly inflexed, the tube with a glandular lo-lobed band within at the base. Stamens 

 5, inserted on the tube or throat of the corolla, included; filaments short. Ovary 4 parted; 

 style filiform, exscrted. Nutlets 4, or commonly only i or 2 perfecting, ovoid, sometimes 

 sparingly pitted, shining, smooth, white, attached by the base to the nearly Hat receptacle, 

 the scar of attachment small, flat. [Greek, like oiiostna, or ass-smell.] 



About 6 species, natives of North America and Mexico. Besides the following, 2 others occur 

 in the southwestern United States. 



Leaves acute; .stem hirsute. , 



Plant green; hairs long and shaggy; nutlets ovoid, 1 '.2 long. 



Plant pale; hairs shorter and soft; nutlets ovoid-globose, 2 long. 

 Leaves obtuse; stem appressed-hi.spid. 



1. O. Carolinianuni. 



2. O. nuille. 



3. O. Virginianum. 



I. Onosmodium Carolinianum (Lam.) DC. 



(Fig. 3050.) 



Ltllinspermum Carolinianum I^am. Tabl. En- 



cycl. i: 367. 1791- 

 Oiiosmoiliiim Carolinianum DC. Prodr. 10; 70. 



1S46. 



Spreading-hirsute with rough bristly hairs; 

 stem stout, usually much branched, i°-3° 

 high, the branches ascending. Leaves lan- 

 ceolate, ovate-lanceolate or oblong, acute or 

 acuminate at the apex, narrowed to the ses- 

 sile base, 5-9-ribbed, 2'-^]V long, yi'-iVz' 

 wide; flowers very numerous and crowded; 

 pedicels i "-2" long in fruit; calyx-segments 

 linear, acute, somewhat shorter than the 

 coroUa-tubc; corolla yellowish-white, pubes- 

 cent outside, about 5" long, its lobes triangu- 

 lar-lanceolate, acute, about one-half as long 

 as the tube; nutlets obtuse, about i^" long. 



In dry fields or thickets, or on banks, Ontario 

 and western New York to Minnesota, south to 

 Georgia and Texas. Ascends to 2200 ft. in 

 Virginia. May-July. 



Shaggy False Gromwell. 



2. Onosmodium moUe Michx. 



Soft-hairy False Gromwell. 



(Fig. 3051.) 



Onosmodium molle Michx. Fl. Bor. Am. i. 133. 

 pi. 13. 1803. 



Onosmodium Carolinianum var. molle A. 

 Gray, Syn. Fl. 2: Part i, 206. 1878. 



Similar to the preceding species, but usu- 

 ally lower, i°-2° high, canescent, at least 

 when voung, pale green, the pubescence soft 

 and shorter, that of the leaves appressed. 

 Leaves smaller, ovate-lanceolate, ^i'-^ long, 

 sessile; corolla-lobes usually less thau one- 

 half the length of the tube; nutlets larger, 

 globose-ovoid, fully 2" high. 



On prairies, Manitoba and the Northwest 

 Territorj' to Illinois, Kansas, Texas and Utah. 

 May-July. 



