346 LOGANIACE.E. (LOGANIA FAMILY.) 



flattened, notched at the apex, 2-celled, loculicidally 2-valved, many -seeded. 

 A smooth, diffuse, much-branched, small annual, with narrowly linear or awl- 

 shaped leaves, connected at base by a slight stipular line ; the small flowers 

 solitary and sessile in the forks and at the ends of the branches ; corolla incon- 

 spicuous, white. (Name altered from Tro\vTrpfjLvos y many-stemmed.) 



1. P. prociimbens, L. Dry fields, mostly in sandy soil, Md. to Tex. ; 

 also adventive in Penn. June - Oct. 



3. S PIG ELI A, L. PINK-ROOT. WORM-GRASS. 



Calyx 5-parted ; the lobes slender. Corolla tubular-funnel-form, 5-lobed at 

 the summit, valvate in bud. Stamens 5; anthers linear. Style 1, slender, 

 hairy above, jointed near the middle. 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. (MARYLAND PINK-ROOT.) Stems simple and 

 erect from a perennial root (6-18' high); leaves sessile, ovate-lanceolate, 

 acute; spike simple or forked, short; corolla \y long, red outside, yellow 

 within ; tube 4 times the length of the calyx, the lobes lanceolate ; anthers 

 and style exserted. Rich woods, N. J. to Wise, and Tex. June, July. A 

 well-known officinal anthelmintic, and a showy plant. 



4. MIT RE OLA, L. MITREWORT. 



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

 5-lobed, valvate in the bud. Stamens 5, included. Ovary at the base slightly 

 adnate to the bottom of the calyx, 2-celled ; styles 2, short, converging and 

 united above by a common stigma. Capsule exserted, strongly 2-horned or 

 mitre-shaped, opening down the inner side of each horn, many-seeded. An- 

 nual smooth herbs, 6' - 2 high, with small stipules between the leaves, and 

 small white flowers spiked along one side of the branches of a terminal peti- 

 oled cyme. (Diminutive of mitra, a mitre, from the shape of the pod.) 



1. M. petiolata, Torr. & Gray. Leaves thin, oblong-lanceolate, petioled. 

 Damp soil, from E. Va. to Tex. 



ORDER 69. GENTIANACE^E. (GENTIAN FAMILY.) 



Smooth herbs, with a colorless bitter juice, opposite and sessile entire and 

 simple leaves (except in Tribe II.) without stipules, regular flowers with the 

 stamens as many as the lobes of the corolla, which are convolute (rarely im- 

 bricated and sometimes valvate) in the bud, a 1-celled ovary with 2 parietal 

 placenta?, or nearly the whole inner face of the ovary ovuliferous ; the fruit 

 usually a 2-valved and septicidal many-seeded capsule. Flowers solitary 

 or cymose (racemose in n. 8). Calyx persistent. Corolla mostly Wither- 

 ing-persistent ; the stamens inserted on its tube. Seeds anatropous, with 

 a minute embryo in fleshy albumen. (Bitter-tonic plants.) 



