364 DIDYNAMIA ANGIOSPERMIA 



mostly pubescent ; bract*, at the base of the calyx, linear-lanceolate, about as long 

 or finally longer than the calyx. Calyx-segments lance-linear, rather acute, l 

 third to half the length of the corolla. Corolla pale yellow, with an ochrolcucous 

 limb, sometimes tinged with red ; tube a little curved ; lobes emarginate ; throat 

 hairy. Stamens 2, inserted on, and shorter than, the tube of the corolla. Style 

 somewhat persistent, about as long as the capsule ; stigma oblique. Capsule 

 ovate, acute, somewhat compressed, grooved at the central suture on each flat- 

 ted side, from which the dissepiment proceeds,— usually opening with 2 valves, 

 but each valve finally separable into 2 others. Seeds numerous, oblong, striate, 

 minutely scabrous, pale straw color. 



Hub. Wet, miry places ; along rivulets, kc. frequent. Ft* June-July. FY. July-Aug. 

 Obs. Our plant presents some varieties j but they arc all, probably, referable 

 to this species. I have some doubts of the root being perennial. The G. virginica, 

 of Elliott, Mr. Le Conte says is distinct,— being the G. viscosa, of Schxceinitz. 

 Five or six additional species are enumerated in the U. States. 





295. LINDERNIA. L. JSTutt. Gen. 15. 

 [So named in honor of F. B. von Lindern; a German Botanist.] 



Calyx deeply 5-parted, naked at base. Corolla tubular, bilabiate ; 

 upper lip short, reflected, emarginate ; lower lip 3-lobed, unequal. Fil- 

 aments 4, the 2 longer ones forked and sterile. Stigma bilamellatc. 

 Capsule ovoid-oblong, 2-cclled, 2-valved ; dissepime?it fumllel with the 

 valves. Seeds numerous, minute. 



Herbaceous: leaves opposite; peduncles axiliaiy, solitary, i -flowered. Nat, 

 Ord. 211. Lindl. Scrophularine.e. 



1. L. attexuata, Muhl. Leaves ovate-oblong, and obovate, repand- 



denticulate, narrowed at base, sessile ; peduncles erect, shorter than the 



leaves. Beck, Hot. p. 265. 



L. pyxidaria, var. major. Pursh, Am. 2. p. 419, 



L. dilatata. Florul. Cestr. p. 3. Not of Muhl. 



Attenuated Linderxia. Vulgo — Pimpernel. 



Root annual. Stem 4 to 6 or 8 inches high, erect, or decumbent and radicating 

 at the lower joints, quadrangular, smooth, branching, sometimes much branched 

 from the base. Leaves half an inch to an inch long, and I fourth to half an inch 

 wide, smooth, the lower ones obovatc, or spatulate, nearly entire, narrowed al- 

 most to a petiole at base, those above ovate-oblong, or lance-ovate, acute, or some- 

 times obtuse, denticulate, abruptly narrowed at base, subamplexicaul. Peduncles 

 quadrangular, smooth, shorter than the leaves, the upper ones finally becoming 

 almost as long. Calyx-segments lance-linear, nearly equal. Corolla pale bluish- 

 purple, about twice as long as the calyx. Stamens 2 fertile ; anthers with the cells 

 diverging. Sterile filaments as long as the corolla, forked (sometimes wanting 1). 

 Style rather persistent, Capsule a little longer than the calyx, acute. Seeds ob- 

 long, ribbed, pale straw-color. 



Hob. Low, swampy grounds : frequent. Fl. July— August. Fr. August— Sept. 



Obs. This was erroneously inserted in my Catalogue as L. dilatata. Three or 

 four additional species are enumerated in the U. States. 



B. Flowers constantly Didynamous. 



296. GERARDIA. L. JYutt. Geiu 534. 

 [in honor of John Gerard; an old English Botanist.] 



Calyx 6-toothed, or 5-cleft, Corolla subcampanulate and Tentricote, 



