llKAJiANTiius. XCl. iSCUOPilULARlAUEi'E. 403 



13. GRATIOLA. 



Lnt. gratia, fiivor; alludih;,' to il-s ntcdir.inol virtutM. 



Calyx 5-parted, subequal ; cor. upper lip entire or slightly bifid, 

 lower trifid, the palate not prominent ; sta. 2, fertile, mostly with 3 

 sterile lllaments ; caps. 2-cclled, 4-valvcd,*valves iuflexcd at margin. 

 — Herbs icitk (ypjwsitelvs. Pcd. axillary^ l-Jlowcred^ usualli/ hibracteo- 

 late near tlic calyx. 



1. G. AURKA. Muhl. Goldrn Hcds;c Hyssop. 



Smooth ; Us. oblong-lanceolate, subentire, hall-clasping ; sterile Jil. 2, mi- 

 nute. — A small, perennial herb, (j — 8' high, frequenting the borders of muddy 

 ponds and other moist places, Mass. ! N. Y. ! to Flor. Stem declining and 

 rooting at the base, quadrangular, simple or branching. Leaves opposite, ses- 

 sile, a little clasping, smooth, punctate, acute or nearly so, often with a lew 

 teetli near the end. Flowers yellow, axillary, alternate, on .slender stalks, as 

 long as the leaves. Filaments 4, adhering to the corolla, 2 of them minute, 

 without anthers. Aug. , 



2. G. ViRGiNicA. (G. aurea. Ph. G, Missouriana. Beck. G. officinalis. 

 Mr.) — SL ascending, branched; Ivs. lanceolate, subacute ; ped. as long or 



longer than the leaves; sLcrilcfii. none. -% U. S. and Can. Stem 4 — 8' high, 

 more or less pubescent, round, declining and branching at base. Leaves 1 — 2' 

 long, and ^ as wide, smooth, lanceolate, sessile, dentate or nearly entire near 

 the ends, subconnate or amplexicaul. Corolla white or pale-yellow, pubescent 

 within, twice as long as the calyx, and on long, pubescent stalks. Calyx with 

 5 equal segments, and 2 bracts which are linear-lanceolate and rather longer 

 than the .sepals. July. 



3. G. sPHiEROCARPA. Ell. (G. Carolinicnsis. Le Conie.) Round-fruited 

 Hedge Hyssop. — Glabrous, ascending, branched; Ivs. lanceolate-ovate, 



attenuate lo the base, sparingly toothed ; pcd. scarcely longer than the calyx. — 

 Low grounds, Western States ! to Ga. Plant a few inches high, differing from 

 the last chiefly in the short peduncles, round capsules, broader leaves, &c. 

 Flowers whitish, 5 — G" long. June. 



14. ILYSANTHUS. Rafine.sque. 

 Gr. tXvf, mud, av^og, flower; from the habitat of the plants. 



Calyx 5-parted ; cor. upper lip short, erect, bifid, lower lip larger, 

 spreading, trifid ; sta. 2 fertile, 2 sterile fil. forked, one of the di- 

 visions glandular, obtuse, the other acute, or rarely with half an an- 

 ther ; caps, ovate or oblong, about equaling the calyx. — (i) icilh oppo- 

 site Ivs., and axillary.^ l-Jiowered ped., resembling Gratiola in habit. 



I. GRATioLoiDEs. Bcnth. (Lindernia dilatata. Ell. L. attenuata. MuJd. 



L. pyxidaria. Ph. Gratiola anagalloidea. Mlchx.) — Glabrous, ascending, 

 much branched ; Ivs. ovate or oblong, obtusish, subdentate, lower attenuated to 

 a petiole ; cor. erect, twice longer than the calyx, on bractless peduncles ; stcriU 

 fit. bearing the glabrous, acute lobe below the middle. — In wet places, Can., N. 

 Y. ! Ohio. ! la., 111. ! to Tex., frequent, A low, inconspicuous plant, 3 — 6 or 

 8' high. Leaves 5 — 8" long, sometimes mostly sessile, commonly the lower 

 distinctly petiolate. Corolla bluish-white, much exserted, 5" long. July, Aug. 

 — Varies with the leaves somewhat dilated at base and sessile, and the pedun- 

 cles longer or shorter, being .sometimes a little longer than the leaves. 

 15. HEMIANTHUS. Nutt. 



Gr. I'lui, half, av^os, flower; alluding to the absence of the upper lip. 



Calyx 4-toothed ; cor. upper lip very short or obsolete, lower 3- 

 cleft, the middle segment long, spreading ; cells of the 2 anthers 

 divaricate ; sterile fil. ; caps. 1 -celled, 2-valved. — ® Minute gla- 

 brous, creeping. Lvs. opposite. 



