LOGANIACEAE (LOGANIA FAMILY) 653 



free ovary ; our representatives of the family are related most nearly to the 

 Rubiaceae, to which, indeed, they have been appended. 



* Woody twiners ; leaves evergreen ; stigmas 2, each 2-parted. 



1. Gelsemium. Corolla large, the 5 lobes imbricated in the bud. Style slender. 



* * Herbs ; stigmas single, entire or 2-lobed. 



2. Spigelia. Corolla 5-lobed, valvate in the bud. Style single, jointed in the middle. 



3. Cynoctonum. Corolla 5-lobed, valvate in the bud. Styles 2, short, converging, united at 



the summit, and with a common stigma. 



4. Polypremum. Corolla 4-lobed, not longer than the calyx, imbricated in the bud. 



1. GELSEMIUM Juss. YELLOW (FALSE) JESSAMINE 



Corolla open-funnel-form. Stamens 5, with oblong sagittate anthers. Divi- 

 sions of stigma linear. Capsule elliptical, flattened contrary to the narrow 

 partition, 2-celled, septicidally 2-valved. Seeds many or several, winged. 

 Embryo straight, in fleshy albumen ; the ovate flat cotyledons much shorten 

 than the slender radicle. Smooth twining shrubby plants with ovate or 

 lanceolate leaves, minute deciduous stipules, and showy yellow dimorphous 

 flowers. (Gfelsomino, the Italian name of the Jessamine.) 



1. G. sempSrvirens (L.) Ait. f. Stem climbing high ; leaves short-petioled, 

 shining, nearly persistent ; flowers in short axillary clusters ; pedicels scaly 

 bracted ; flowers very fragrant ; corolla 2.5-4 cm. long ; capsule flat, pointed. 

 Low grounds, e. Va. to Fla. and Tex. Mar., Apr. 



2. SPIGELIA L. * PINK-ROOT. WORM-GRASS 



Corolla tubular-funnel-form, 5-lobed at the summit. Stamens 5 ; anthers 

 linear. Style slender, hairy above. Capsule short, 2-celled, twin, laterally 

 flattened, separating at maturity from a persistent base into 2 carpels, which 

 open loculicidally, few-seeded. Chiefly herbs, with opposite leaves united by 

 stipules, and the flowers spiked in one-sided cymes. (Named for Adrian 

 Spiegel, latinized Spigelius, who wrote on botany early in the 17th century, and 

 was perhaps the first to give directions for preparing an herbarium.) 



1. S. marilandica L. (INDIAN PINK.) Stems simple and erect, 3-6 dm. 

 high, from a perennial root ; leaves sessile, ovate-lanceolate, acute ; spike 

 simple or forked, short ; corolla 3-5 cm. long, red outside, yellow within ; tube 4 

 times the length of the calyx, the lobes lanceolate ; anthers and style exserted. 

 Rich woods, O. and Ky. tc Fla., Mo., and Tex. May, June. 



3. CYN6CTONUM J. F. Gmel. MITERWORT 



Corolla little longer than the calyx, somewhat funnel-form. Stamens 5, 

 included. Ovary at the base slightly adnate to the bottom of the calyx, 2-celled. 

 Capsule exserted, strongly 2-horned or miter-shaped, opening down the inner 

 side of each horn, many-seeded. Annual smooth herbs, 1-7 dm. high, with 

 small stipules between the leaves, and small white flowers spiked along one side 

 of the branches of a terminal peduncled cyme. (KiW, dog, and Krelveiv, to 

 kill.} MITREOLA R. Br. 



1. C. MitrSola (L.) Britton. Leaves thin, oblong-lanceolate, petioled. (M. 

 petiolata T. & G.) Damp soil, from e. Va. to Tex. June-Nov. 



4. POLYPREMUM L. 



Calyx 4-parted ; the divisions awl-shaped from a broad scarious-margined 

 base. Corolla almost wheel-shaped, bearded in the throat. Stamens 4, very 

 short ; anthers globular. Style very short ; stigma ovoid, entire. Capsule 

 ovoid, a little flattened, notched at the apex, 2-celled, loculicidally 2-valved, 



