DiERviLLA. CAPRIFOLIACEiE. 301 



§. DiERviLLA proper, Torr. ^- Gr. Flowers yellowish : capsule membranaceous : seeds not furnished 



with a crest or wing ; the testa crustaceous. 



1. DiERviLLA TRiFiDA, Moinch. Commov, Bush-Honeysuckle. 



Leaves oblong-ovate, acuminate, on short petioles, smooth or somewhat hairy on the veins 

 underneath ; peduncles 1 - 3-flowered ; capsule attenuate at the summit, crowned with the 

 linear-setaceous teeth of the calyx. — Alcench, meth. p. 492 ; Torr. <^ Gr.jl. N. Am. 2. p.W. 

 D. Acadiensis fruticosa, &c. Touni. D. Tourncfortii, Michx. fl. \. p. 107; Torr. Jl. 1. 

 p. 238 ; Beck, hot. p. 157. D. humilis, Pers. syn. \.p. 214. D. Canadensis, Willd. enurn^ 

 1. p. 222 ; Bigel. Jl. Bost. p. 69 ; DC. prodr. 4. p. 330 ; Hook. Jl. Bor.-Am. 1. p. 281 ; 

 Darlingt. Jl. Cest. p. 157. D. lutea, Pursh, Jl. I. p. 1G2. Lonicera Diervilla, Linn. sp. 1. 

 p. 175. 



Stem 2-3 feet high ; the branches smooth and somewhat quadrangular. Leaves 2-4 

 inches long, obtusely serrate, ciliate. Peduncles growing from the axils of the upper leaves 

 and also terminal, mostly 3-flowcred ; the central flower sessile ; lateral ones pedicelled. 

 Bracteoles subulate, shorter than the ovary. Corolla about three-fourths of an inch long, 

 greenish-yellow, pubescent externally, hairy inside. Stamens and style exsertcd. Capsule 

 ovoid-oblong, contracted above into a sort of beak, often a little curved, crowned with the 

 long and somewhat spreading calyx-segments ; the placenta reaching almost to the dorsal 

 suture, so as to give the appearance of 4 cells. 



Rocky woods ; rather common. Fl. June. Fr. September. 



Subtribe 2. Trioste.e. Fruit drupaceous; the endocarp bony. Testa of the seed mem- 

 branaceous. 



5. TRIOSTEUM. Linn. ; Endl. gen. 3338. fever-root. 



[ From the Greek, trcis, three, and ostcmi, a bone ; the fruit containing three bony nucules.] 



Calyx-tube ovoid ; segments of the 5-parted limb linear-lanceolate, foliaceous, persistent. 

 Corolla tubular, gibbous at the base ; the limb somewhat equally 5-lobed. Stamens 5, 

 included. Fruit rather dry, roundish-obovoid, crowned with the calyx-segments, containing 

 3-5 elliptical bony nucules. Embryo minute, oblong, in the axis of fleshy albumen. — 

 Perennial, herbaceous, or rarely sufTrutescent plants. Leaves lanceolate or oval, connate 

 at the base. Flowers axillary and sessile, or nearly so. 



1. Triosteum perfoliatum, Linn. Fever-icort. Horse Gentian. 



Stem glandularly hairy ; leaves ovate or spalulate-ovate, acuminate, abruptly narrowed at 

 the base, velvety-pubescent underneath, somewhat hairy above ; axils 1 - 3-flowered ; flowers 



