Order 85.— LOGA^IACE^B. 615 



QEXERA. 



^ Corolla tubular, lobes 5, valvato in bud. Seods wingless, (a) 



a Styles wholly united into ono. Corolla tube long Spigelia. 1 



a Styles distinct, with the stigmas united. Cor. tube short.. . .Mitkeola. ii 

 *[ Corolla campanulate, lobes 4 or 5, imbricate iu bud. (b) 



b Flowers 4-parted. Diffuse herbs Polypremum. 3 



b Flowers 5-parted. Twining shrubs Gklsemium. 4 



i. SPIGE V LIA. L. Pink-root. (To Adrian Spiffdius, Professor of 

 An at. and Surg, at Padua, 1578 — 1625.) Calyx 5-parted, segments 

 linear-subulate ; corolla narrowly funnel-form, limb 5-cleft, equal ; sta- 

 mens 5 ; anthers convergent ; capsule didymous, 2-cellcd, few-seeded. 

 — Herbaceous or suffrutescent. Lvs. opposite. Stip. small, interpetiolar. 

 Fls. sessile, in terminal spikes. 



S. Marilandica L. Erect, simple, nearly glabrous; st. square; lvs. sessile, 

 ovate-lanceolate, acute, or acuminate, margin and veins scabrous-pilous ; spikes ?. 

 to 8-flowerecl ; cor. tube 4 times longer than the cal. ; anth. exserted ; lobes of the 

 cor. lanceolate ; caps, glabrous, shorter than the cal. — 21 In woods, Penn. to 111., 

 S. to Fla. An elegant dark green herb, a foot high. Lvs. 3 to 4' by lj to 2h', 

 entire, often ovate-acuminate, the stipules scarcely perceptible. Fls. 1+ to 2' long, 

 somewhat club-shaped, scarlet without, yellow within. Sty. exserted. Jn. — 

 A celebrated anthelmintic. 



2. MITRE'OLA, L. (Lat. mitreola, a little mitre ; from the form of 

 the capsule.) Calyx 5-parted ; corolla tubular, short, 5-cleft, hairy in 

 the throat, lobes valvate in bud ; stamens 5, on the corolla tube, in- 

 eluded ; ovary 2-celled, styles 2, united at the top with one stigma, 

 separate below, as well as the 2 horns of the co-seeded capsule. — (£ 

 Glabrous herbs. Stipules minute. Fls. small, white, in scorpoid racemes, 

 forming a terminal, stalked cyme. 



1 M. petiolata Torr. & Gr. Erect, branched; lvs. lanceolat^ or oblong-ovate, 

 acute, tapering at the base into apetiole; fls. somewhat distant in the racemes. — A 

 plant of singular aspect, in damp shades, Va. to Fla. and La. St. 1 to 2f high. 

 Lvs. thin, about 2' long, including the short petiole. Cymes about twice trichoto- 

 mous, the small fls. allon the upper side of the racemes. Capsules mitre-form. 

 Jn. — Sept. (Ophiorhiza Mitreola, L.) 



2 M. sessilifolia Torr. & Gr. Erect, nearly simple ; lvs. broad-oval, or ovate, ses- 

 sile, acute, much shorter than the internodes ; fls. contiguous in the racemes. — 

 Damp soil, S. Car. to Fla. and La. More slender than the other, 10 to 18' high. 

 Lvs. thickish, not veiny, G to 8" by 4 to 6". Cymes small, compact. Fls. about, 

 half as large as in No. 1. Jn. — Aug. (Anonymus, Walt.) /?. angustifolia. 

 Torr. & Gr. has lance-elliptical leaves ; at Quincy, Fla. 



3. POLYPRE'MUM, L. (Gr. noXvg, many, 7zpefivov, stem ; a charac- 

 teristic of the plant.) Calyx 4-parted, segm. subulate, membranous- 

 margined at base ; cor. broadly campanulate, 4-parted, lobes slighly un- 

 equal, obtuse ; throat bearded ; stam. 4, adherent to the corolla tube, 

 included, anth. globular ; stig. entire, subsessile ; caps, ovoid, 2-cellcd, 

 2-ovuled, loculicidal, co-seeded. — (T) Herb glabrous, diffusely much 

 branched from the base, with opposite, linear-subulate lvs. connected at 

 base by a slight stipular membrane. Fls. sessile, cymous, small, white. 



P. procurnbens L. Dry fields, Ta. to Fla. and La. Plant forming roundish 

 patches, with somewhat the aspect of Scleranthus, its numerous stems procum- 

 bent or ascending, 6 to 12' long. Lvs. hardly 1' long, rigid. Cal. persistent, its 

 pointed sepals exceeding the capsule. May — Sept. — Bentham refers this genus 

 to Serophulariacoas. Torr. & Gr., hither. 



. 4. GELSEMIUM, Juss. Yellow Jessamixe. (Ital. gehemio, the 



