BOllKAGINACE^. (bOBAGE FAMILY.) 321 



lanceolate (l'-3j' long), the lower narrowed at the base; corolla rather longer 

 than the calyx (3" long) ; the lobes lanceolate<avl-shaped, bearded with long bristles 

 ontside; anthers oblong-arrow-shaped, on very short flattened filaments. (O. 

 liispidum, Michx. Lithospfermum Virginianum, L.!) — Banks and hill-sides, 

 S. Now England to Virginia and southward. June- Aug. 



2. O. Carolinianum, DC. (cxcl. syn. Michx.) Clothed all over with 

 long and spreading bristly Itairs ; stem stout, upright (3° -4° high) ; leaves ovale- 

 lanceolate or oblong-lanceolate, acute; corolla tmce the length of the calyx; the lobes 

 deltoid-ovate, obtusish; anthers oblong, longer than the naiTow filaments. (0. 

 molle. Beck, &c. Lithosp. Carolinianum, Lam.) — Kiver-banks, W. New York, 

 "Wisconsin, Virginia, and southward. June, July. — Stouter and larger-leaved, 

 than the last, thickly clothed with less rigid but long and shaggy whitish Iiairs. 

 Lobes of the corolla more or less hairy on the back, appearing slightly heart- 

 shaped by the inflexion of the sinuses. Tliis has been confounded by some 

 authors with No. 1 ; by others with No. 3, wliioh it most resembles. 



3. O. ni6llc, Michx. Hoary with Jine and close strictly oppressed hairs; 

 leaves oblong-ovate, obtusish, soft-downy underneath ; corolla longer than the calyx, the 

 lobei lance-ovate or triangular, acute ; anthers linear, much longer than the verti- 

 cally dilated filaments. — Dry grounds, Illinois and southward. Corolla rather 

 larger than in the last ; the lobes more or less hairy along the middle. 



5. lilTHOSPEBMUIW, Tourn. Gromwell. Puccoo.v. 



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

 with a more or less evident transverse fold 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, sessile leaves, and axillary or often spiked or racemed leafy-bracted 

 flowers (occasionally of 2 forms as to stamens and style, as in Olrtenlandia, p. 

 171, &c.). (Name compounded of Xi'^os, stone, and aiiepjxa, seed, from the hard 

 nutlets.) 



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

 {nearly white) corolla destitute of evident folds or appendages. 



1. Ii. ARvtNSE, L. (Corn Gromwell.) Minutely rough-hoai-y ; stems 

 erect (6' -12' high) ; leaves lanceolate or linear, veinless ; corolla scarcely longer 

 than the calyx. (J) — Sandy banks and road-sides. New England to Pennsyl- 

 vania and Michigan. May -Aug. (Nat. from Eu.) 



" § 2. Nutlets smooth and shining, mostly white like ivory, occasionally dotted with pores : 

 corolla in our species greenish-white or cream-color, small, with 5 small but distinct 

 pubescent scales in tlm throat. ( Root perennial.) 



2. JL. ailgustifolillin, Michx. Minutely and slightly hoary, roughish, 

 much branched, erect or spreading (6'- 15' high) ; Uacis linear, rigid, t -nerved; 

 corolla not longer than the calyx ; the short peduncles in fruit mostly recurved ; 

 mi(fe(s more or ZesspKa/ when young, rarely bright white, but smooth and shin- 

 ing. River-banks, from lUinois southward and westward. May. 



