432 XCIV. BORRAGINACE^E. LITHOSPERMUM. 



6. ONOSMODIUM. Michx. 



From Onosma, another genus of this order, and eidos, appearance or resemblance. 



Calyx deeply 5-parted, with linear segments ; corolla subcampanu- 

 late, having a ventricose, half 5-cleft limb, with the segments con- 

 verging and the orifice open ; anthers sessile, sagittate, included ; 

 style much exserted ; achenia imperforate, shining. '4 North Ameri- 

 can. Rac. terminal, subspicate, one-sided. Fls. white. 



1. O. VIRGINIANUM. Alph. DC. (O. hispidum. Michx. Lithospermum 

 Virg. Linn.) False Gromwell. St. with appressed hairs ; Ivs. oblong-lan- 

 ceolate, minutely strigose ; col. lubes lanceolate, pilose both sides, half as long as 

 the corolla ; cor. lobes lance-subulate, clothed externally with long, hispid hairs. 

 N. Y. to Flor., in dry, hilly grounds. A very rough, erect plant about lf 

 high. Leaves 1 2' by J f, 3 5- veined, often oval and even ovate-lanceo- 

 late. Flowers greenish- white, in leafy racemes which are recurved at first but 

 finally erect. Styles (6 7") twice longer than the corolla. 



2. O. CAROLINIANUM. DC. (O. molle. Michx. Lithospermum Carol. Lam. 

 L. molle. Muhl.) Villose-canescent ; Ivs. oblong-oval, rather obtuse, each 



side whitish with scattered hairs; bracts ovate-lanceolate; cal. segments lanceo- 

 late, half as long as the glabrous corolla; cor. segments ovate, acute. Rocky 

 hills, N. Y. to Car. and Tenn. Plant a foot or more high, clothed with a soft, 

 white pubescence. Anthers silky-pubescent, as long as the glabrous filaments, 

 its lobes scarcely diverging. Jl. Aug. % 



3. O. STRIGOSUM. G. Don. 



St. erect, simple, pilose-hispid, very leafy; Ivs. lance-linear, sessile, very 

 long, 3- veined, with appressed hairs ; bracts lance-linear, silky ; cal. lobes linear, 

 acute, silky with appressed hairs both sides, very long ; cor. cylindrical, a third 

 longer than the calyx, silky-puberulent outside ; sta. included ; sty. exserted. 

 111., (Mead,) in wet prairies and woods. Leaves 3' long, ' wide, nearly gla- 

 brous beneath the veins. Corolla yellowish- white. Fruit smooth and shining. 



7. LITHOSPERMUM. 

 Gr. Xi^oj, a stone, and <T7Tp//a, seed ; the seeds being hard and shining like little pebbles. 



Calyx 5-parted, persistent; corolla funnel-form or salver-form; 

 limb 5-lobed, orifice open ; stamens included ; stigma obtuse, bifid ; 

 achenia bony, rugose or smooth, imperforate at base. Herbaceous or 

 su/ruticose, generally with a thick, reddish root. Fls. spiked or racemedj 

 bracted, white or yellow. 



* Flowers white. 



1. L. OFFICINALE. Officinal Gromwell. 



St. herbaceous, erect, very branching above; Ivs. lanceolate, acute, vemy; 

 cal. nearly equal to the tube of the corolla ; ach. smooth. 1|- A rough, weed-like 

 plant, introduced from Europe. Grows in dry, gravely soils. Stems much branch- 

 ed, clustered, arising 1 2f from a white, fusiform root. Leaves grayish-green, 

 rough on the upper side, hairy beneath, rather acute, entire, 2 3' by f '. Flow- 

 ers small, white, axillary, solitary, 'pedicellate, in recurved, leafy spikes. Ache- 

 nia ovate, white or grayish, polished, stony, usually but 1 or 2 perfected. Jl. 



2. L. LATIFOLIUM. Michx. Broad-leaved Gromwell. 



Herbaceous, erect, subsimple, scabrous ; Ivs. ovate-lanceolate, acute at 

 each end, veined, scabrous ; roc. leafy, few-flowered ; sep. lance-linear, longer 

 than the corolla and spreading in fruit ; ach. punctate, shining- white, ovoid-tur- 

 gid. Woods and thickets, N. Y., Torrcy, to Ohio and 111., Mead! and Va., 



Flowers small, white. 



3. L. ANGUSTIFOLITJM. 



St. herbaceous, procumbent; Ivs. linear, strigose with an appressed pubes 



