ORDER LXXXI. LOGANACE^E. 435 



Genus III.— ECHI'TES. Walt 18—5. 

 (From echis, serpent, from the form of its roots.) 



Calyx 5-parted, with acute segments. Corolla funnel-shaped, 

 the border 5-parted, the throat naked. Anthers adhering to the 

 stigma. Follicles 2, distinct, long, slender. 



1. E. diffor'mis, (Walt.) Stem climbing over small shrubs. Leaves 

 opposite, pubescent beneath, the lower ones narrow-lanceolate or linear, 

 the upper oval-lanceolate, acuminate. Flowers in corymbose racemes. 

 Stamens included, inserted into the base of the corolla. — Yellowish- 

 white. U- May — Aug. Damp rich soils. 



Order LXXXL— LOGANA'CE^E or SPIGELIA'CE^E. 



Calyx 5-parted. Corolla hypogynous, tubular, 5-lobed. 

 Stamens 5, inserted into the corolla. Ovary superior, 2-celled. 

 Style articulated. Stigma simple. Fruit capsular, 2-celled, 

 2-valved, dehiscing elastically. Placenta* central. Albumen 

 abundant. Embryo minute. Herbaceous plants with opposite 

 entire leaves. Flowers in secund spikes. 



Gexus I.— SPIGE'LIA. L. 5—1. 

 (In honor of Adrian Spigelius of Padua.) 



Calyx 5-parted. Anthers converging. Flowers in secund 

 spikes. 



1. S. Maryland'ica, (L.) Stem square, branching at the base, slight- 

 ly winged. Leaves sessile, ovate-lanceolate margins, and veins pubes- 

 cent beneath. Flowers in a simple terminal, secund spike ; segments 

 of the calyx subulate ; tube of the corolla ventricose, long, yellow with- 

 in, segments short. — Deep red. 2£. May — July. Dry soils. Very 

 common. 1 — 2 feet. Carolina Pink, or Pink-root. 



2. S. genti.enoi'des, (Chap.) Stem erect, simple, 4-angled. Leaves 

 sessile, lower obovate, middle ovate, upper ovate-lanceolate. Spikes 

 2 — 5-flowered ; lobes of the calyx shorter than the tube of the corolla ; 

 lobes of the corolla narrow-lanceolate. — Florida. 



The root of this plant is much used in both the regular and domestic practice, as a 

 vermifuge, or in cases of worms. It should always be employed in connection with 

 some cathartic medicine, since it acts as a narcotic, if not carried from the system, 

 either by its own action or that of some other agent 



Genus EL— GELSEM'INUM. Ait. 5—2. 

 (An ancient name of Jasmine.) 



Calyx 5-leaved. Corolla funnel-shaped, with the border 5- 

 lobed. Capsule compressed, 2-celled. Seed flat. 



I. G. sempervi'rens, (Ait.) (niiidum.) Stem twining, smooth, gla- 

 brous. Leaves opposite, lanceolate, entire, perennial, shining on the 

 upp<-r surface, paler beneath. Flowers in axillary clusters, on short pe- 

 duncles, which are covered with small scales. Leaves of the calyx equal, 

 glabrous. Capsule oblong, furrowed, terminated by the style. — Yellow. 

 ^ . Feb. — March. Yellow Jessamin*. 



