CAPRIFOUACEAE, 873 



1. Triosteum perfoliatum L. Fever-wort. Horse-Gentian. Stem 

 erect, stout, finely glandular-pubescent, 6-10 dm. high. Leaves ovate to broadly- 

 oval, 1-2.2 cm. long, acute or acuminate at the apex, abruptly narrowed at the 

 base, soft-pubescent and rugose beneath, sometimes puberulent above, the margins 

 entire; bracts linear; corolla purplish, 12-15 mm. long, viscid-pubescent, about the 

 length of the calyx-lobes; filaments bearded; drupe 8-12 mm. long, obovoid to 

 globose, densely and finely pubescent In rich soil, Conn., to Minn., Ala., Ky. and 

 Kans. May-July. 



2. Triosteum aurantiacum Bicknell. Scarlet-fruited Horse-Gentian. 

 (I. F. f. 3448, as T. perfoliatum.) Stem 5-12 dm. tall, glandular-puberulent to 

 subhirsute; leaves thin, 1.5-2.5 dm. long, broadly ovate-oblong to oblong- lanceo- 

 late, acuminate, contracted below the middle into a narrow base, sometimes slight- 

 ly connate but never broadly perfoliate, minutely soft-pubescent beneath, thinly 

 appressed-hirsutulous to glabrate above; corolla dull red, 14-20 mm. long, with 

 larger, more spreading lobes than in T. perfoliatum, the stamens shorter and style 

 less exserted; calyx-lobes linear, obtuse, 10-20 mm. long; fruit 12-14 mm - long, 

 larger and more obovoid -oblong than in T. perfoliatu??i, and bright orange-red in- 

 stead of orange-yellow. Quebec to Minn., Mass., N. Car., Ky. and Iowa. Type 

 from Van Cortlandt, N. Y. Similar to T. perfoliatum, but less finely pubescent and 

 less leafy, the larger leaves greener, thinner and not rugose; the flowers and fruit 

 markedly different. Flowers 2-3 weeks earlier than T. perfoliatum. 



3. Triosteum angustifolium L. Yellow or Narrow-leaved Horse- 

 Gentian. (I. F. f. 3449.) Stem slender, hirsute-pubescent, 3-9 dm. high. 

 Leaves lanceolate or oval-lanceolate, acute or acuminate, 7-13 cm. long, 1-4 cm. 

 wide, rough-pubescent, tapering to the sessile base, or the lower smaller, obtuse 

 and spatulate; corolla yellowish, 12-14 mm. long; flowers commonly solitary in the 

 axils. In rich soil, Conn, and L. I., to N. J., Penn., Ala., 111. and La. May-Aug. 



4. LINNAEA L. 



Creeping, somewhat woody herbs, with opposite evergreen petioled obovate or 

 orbicular leaves, and perfect pink or purplish flowers borne in pairs at the summit 

 of elongated terminal peduncles. Calyx-tube ovoid, the limb 5-lobed. Corolla 

 campanulate to funnelform, regular, 5-lobed, the lobes imbricate. Stamens 4, in- 

 serted near the base of the corolla-tube, didynamous, included. Ovary 3-celled, 2 

 of the cavities with several abortive ovules, the other with 1 perfect pendulous ovule. 

 Fruit nearly globose, 3-celled, 2 of the cells empty, the other with a single oblong 

 seed. Endosperm fleshy; embryo cylindric. [Named by Gronovius for Linnaeus, 

 with whom the plant was a favorite.] About 4 species of the north temperate zone. 



1. Linnaea Americana Forbes. American Twin-flower. Ground- 

 vine. Branches slender, slightly pubescent, trailing, 1.5-6 dm. long; petioles 2-4 

 mm. long; leaves obscurely crenate, thick, 6-15 mm. wide, sometimes wider than 

 long; peduncles slender, erect, 2-bracted at the summit, 2-flowered (or rarely pro- 

 liferously 4-flowered); pedicels filiform, 6-20 mm. long, 2-bracteolate at the sum- 

 mit; flowers nodding, 8-12 mm. long, fragrant; corolla funnelform; calyx-segments 

 2 mm. long; ovary subtended by a pair of ovate glandular scales which are conni- 

 vent over the fruit or adnate to it. In cold woods, Newf. to Alaska, S. Dak., Colo. 

 Md., Penn., Mich., and Utah. The European and Asiatic L. borealis has an al- 

 most campanulate corolla, and calyx-segments 3 mm. long. June-Aug. 



5. SYMPHORICARPOS Juss. 



Shrubs, with opposite deciduous short-petioled simple leaves, and small, white or 

 pink, perfect flowers, in axillary or terminal clusters. Calyx-tube nearly globular, 

 the limb 4-5 -toothed. Corolla campanulate or salverform, sometimes gibbous at 

 the base, 4-5-lobed; stamens 4 or 5, inserted on the corolla. Ovary 4-celled, 2 of 

 the cavities containing several abortive ovules, the other two each with a single 

 suspended ovule; style filiform; stigma capitate, or 2-lobed. Fruit a 4-celled 2- 

 seeded berry. Seeds oblong; endosperm fleshy; embryo minute. [Greek, fruit 

 borne together, from the clustered berries.] About 10 species, of N. Am. and Mex. 



