362 BORRAGINACK^E. (BORAGE FAMILY.) 



4. ONOSMODIUM, Michx. FALSE GROMWELL. 



Calyx 5-parted ; the divisions linear and erect. Corolla tubular, or tubular- 

 ftmnei-form, naked in the throat (the sinuses minutely hooded-inflexed) ; the 5 

 acute lobes converging or barely spreading. Anthers oblong-linear or arrow- 

 shaped, mucronate, inserted in the throat of the corolla. Style thread-form, 

 much exserted. Nutlets bony, ovoid, smooth, erect, fixed by the base; the scar 

 minute, not hollowed out. Chiefly perennial herbs, coarse and hispid, with ob- 

 long and sessile ribbed-veined leaves, and white, greenish, or yellowish flowers, 

 in at length elongated and erect leafy raceme-like clusters; in summer. 

 Our species all belong to true ONOSMODIUM, having the anthers all included, 

 smooth, and on very short filaments ; the corolla only once or twice the length 

 of the calyx. (Named from the resemblance to the genus Onosma, which means 

 ass-smell. ) 



1. O. Virgininum, DC. Clothed all ova* with harsh and rigid oppressed 

 short bristles ; stems rather slender (l-2high); leaves narrowly oblong, or ob- 

 long-lanceolate (l'-2' long), the lower narrowed at the base; lobes of the nar- 

 row corolla lance-awl-shaped, sparingly bearded outside with long bristles. (O. 

 hispidum, Miclix. Lithospe'rmum Virginianum, L. !) Banks and hillsides, S. 

 New England to Virginia and southward. 



2. O. Caroliniknum, DC. (excl. syn. Michx.) Shaggy all ovef with long 

 and spreading bristly hairs; stem stout, upright (3 -4 high) ; leaves ovate-lance- 

 olate or oblong-lanceolate, acute ; lobes of the rather broad corolla ovate-triangular 

 or triangular-lanceolate, thickly hirsute outside. (0. molle, Beck, &c. Lithosper- 

 mum Carolinianum, Lam.) River-banks, W. New York to Wisconsin and 

 southward. Perhaps passes into the next. 



3. O. m611e, Michx. Hoary with finer and soft mostly appressed hairs ; leaves 

 oblong-ovate, obtusish, strongly ribbed, lobes of the rather narrow corolla triangu- 

 lar and sharp-pointed, thickly hirsute outside. Dry grounds, Ohio to Illinois 

 and southward. 



5. LITHOSPEBMUM, Tourn. GROMWELL. PUCCOON. 



Corolla funnel-form, or sometimes salver-shaped ; the open throat naked, or 

 with a more or less evident transverse fbld or scale-like appendage opposite each 

 lobe ; the spreading limb 5-cleft ; its lobes rounded. Anthers oblong, almost 

 sessile, included. Nutlets ovate, smooth or roughened, mostly bony or stony, 

 fixed by. the base ; the scar nearly flat. Herbs, with thickish and commonly 

 red roots and sessile leaves ; the flowers solitary ^nd as if axillary, or spiked and 

 leafy-bracted : sometimes dimorphous as to insertion of stamens and length of 

 style. (Name formed of At'tfos, stone, and o-Treppa, seed, from the hard nutlets.) 

 1 . Nutlets tubercled or rough-wrinkled and pitted, gray and dull : throat of the 

 (nearly white) corolla destitute of any evident folds or appendages. 



1. L. ARVENSE, L. (CORN GROMWELL.) Minutely rough-hoary annual 

 or biennial; stems erect (6' -^2' high); leaves lanceolate or linear, veinless; 

 corolla scarcely longer than the calyx. Sandy banks and roadsides. May- 

 Aug. (Nat. from Eu.) 



