OaoEB 85. LOGANIACE^B. 51 -5 



GENERA. 

 5 Corolla tubular, lobes 5, valvate in bud. Seeds wingless, (a) 



a Styles wholly united into one. Corolla tube long. SPIQBLIA. I 



a Styles distinct, with the stigmas united. Cor. tube short MITKEOLA. 2 



^ Corolla campauulate, lobes 4 or 5, imbricate iu bud. (b) 



b Flowers 4-parted. Diffuse herbs POLYPKKMUM. 8 



b Flowers 5-parted. Twining shrubs GELSEMIUM. 4 



1. SPIGE'LIA. L. PINK-KOOT. (To Adrian Spiyelius, Professor of 

 Anat. and Surg. at Padua, 15781025.) Calyx 5-parted, segments 

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

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

 Herbaceous or suffrutesccnt. Lvs. opposite. Stip. small, interpetiolar. 

 Fls. sessile, in terminal spikes. 



S. Marilandica L. Erect, simple, nearly glabrous ; st. square : Ivs. sessSe, 

 ovate-lanceolate, acute, or acuminate, margin and veins scabrous-pilous ; spikes 3 

 to 8-flo'wered ; cor. tube 4 times longer than the cal. ; anth. exserted ; lobes of tho 

 cor. lanceolate; caps, glabrous, shorter than the cal. If In woods, Penn. to HI., 

 S. to Fla. An elegant dark green herb, a foot high. Lvs. 3 to 4' by 1J to 2f , 

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

 Bomewhat club-shaped, scarlet without, yellow within. Sty. exaerted. Jn. 

 A celebrated anthelmintic. 



2. MITRE^OLA, L. (Lat. milrcola, a little mitre ; from tho 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- 

 cluded ; 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. (T). 

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

 forming a terminal, stalked cyme. 



1 M. petiolata Torr. & Gr. Erect, branched; Ivs. lanceolate or oblong-ovate, 

 acute, tapering at the base into apetiole; fls. somewhat distant iu 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 trichote- 

 mous, the small fls. all on the upper side of tho racemes. Capsules mitre-form. 

 Jn. Sept. (Ophiorhiza Mitreola, L.) 



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

 sile, acute, much shorter than the iuternodes; fls. contiguous in tho racemes. 

 Da;np 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 G". Cymes small, compact. Fls. about 

 half as large as in No. 1. Jn" Aug. (Anonymus, Walt.) (3. angustifolia, 

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



3. POLYPRE'MUM, L. (Gr. TroAv?. many, -rrpfyvov, stem ; a charac- 

 teristic of the plant.) Calyx 4-parted, scgm. 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, subscssile ; caps, ovoid, 2-celled, 

 2-ovuled, loculicida!, oo-seedcd. CD Herb glabrous, diffusely much 

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

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



P. procumbena L. Dry fields, Va. to Fla. and La. Plant forming roundish 

 patches, with somewhat the aspect of Scleranthus, its numerous steins 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 Sefophulariacea3. Torr. & Gr., hither. 



4. GELSE'MIUM, Juss. YELLOW JEESAMISE. (Ital. yclscmio, the 



