66 



BORAGINACEAE. 



[Vol.. III. 



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 proterogyuous flowers, in terminal leafy- 

 bracted 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 10-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, exserted. Nutlets 4, or commonly only 1 or 2 perfecting, ovoid, sometimes 

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

 the scar of attachment small, flat. [Greek, like onosma, 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, i%" long. i. O. Carolinianum. 



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



Leaves obtuse; stem appressed-hispid. 3. O. Virginianum. 



Onosmodium Carolinianum (L,am.) DC. 



(Fig. 3050.) 



Shaggy False Gromwell. 



Lithospertnum Carolinianum Lam. Tabl. En- 



cycl. 1: 367. 1791. 

 Onosmodium Carolinianum DC. Prodr. 10: 70. 



1846. 



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 / -4^ / long, J^'-i^' 

 wide; flowers very numerous and crowded; 

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

 linear, acute, somewhat shorter than the 

 corolla-tube; 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 1^" 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. 



Onosmodium molle Michx. 

 Soft-hairy False Gromwell. 

 (Fig. 3051.) 



Onosmodium molle Michx. Fl. Bor. Am. 1. 133. 

 pi. 15. 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 young, pale green, the pubescence soft 

 and shorter, that of the leaves appressed. 

 Leaves smaller, ovate-lanceolate, ^ / -2 / long, 

 sessile; corolla-lobes usually less than one- 

 half the length of the tube; nutlets larger, 

 globose-ovoid, fully 2" high. 



On prairies, Manitoba and the Northwest 

 Territory to Illinois, Kansas, Texas and Utah. 

 May-July. 



