Honeysuckle Family. 67 



Gamopetalae: those with both calyx and corolla preseut, the latter 

 having its petals more or less united, rarely separate or wauting. 

 CAPRIFOLIACEAE Vent. Honeysuckle Family. 



Shrubs or herbs, with opposite exstipulate leaves, and perfect mostly 

 5 parted regular or irregular flowers. Calyx-tube adherent to the ovary. 

 Corolla monopetalous, tubular, or rotate. Stamens inserted on the ealyx- 

 tuLie, usually of the same number as the lobes, one less in Linnaea. 

 Style 1; stigmas 3-5. Fruit a berry, drupe, or capsule, 1-several- 

 seeded. 



Tribe Lonicereae. Corolla tubular, limb regular or irregular; style fili- 

 form. 



* Herbs; flowers axillary; corolla 5-lobed. 

 Ltnnaea. Stamens 4. 

 Tkiustbum. Stamens 5. 



. * * Slirubs, erect or climbing. 

 Symphoricarpos. Stamens 4-5; berry 4-celled. 2-seeded. 

 Lonicera. Corolla tubular; stamens 5; berry 2-3-celled. 

 DiEBVLLLA Stameas5: fruit a 2-celled, 2-valved, many-seeded capsule. 



Tribe Sambuceae. Corolla regular, deeply 5-lobed, rotate; stigmas 3-5, 

 mostly sessile. 



SaMBUCOS. Leaves pinnate ; fruit a 3-seeded berry. 

 Viburnum. Leaves simple; fruit a 1-celled, 1-seeded drupe. 



LINNAEA L. A single species, creeping, evergreen, perennial. Leaves 

 roundish, slighly crenate, petiolate. Peduncle slender, erect, 2-flowered. 

 Calyx small, 5-parted, deciduous. Corolla campanulate, lobes 5, about equal. 

 Stamens 4, 2 longer, inserted toward the base of the corolla. Style slightly 

 exserted; stigma capitate. 



L. boreal is L. Somewhat pubescent; stems 6-30 inches long; pedicels 

 from the axils of small branchlets; flowers nodding; corolla roseate, fragrant, 

 about a half inch long. Moist woods; June; infrequent; Winneshiek county. 



TRIOSTEUM L. Coarse perennials, with opposite ample more or less con- 

 nate entire leaves, and sessile axillary flowers. Calyx-tube ovoid, limb of 5 

 nearly linear segments. Corolla tubular, but little exceeding the calyx, 

 gibbous at the base, limb of 5 nearly equal lobes. Stamens 5, included. 

 Style 1, exserted; stigma capitate, lobed. Ovary 3-celled, forming a drupe. 

 Seeds 3, bony, ribbed. 



T. perfoliatum L. Fever-wort. Horse Gentian. Stems 2-4 feet high, sim- 

 ple, soft-pubescent to hirsute; leaves oval, acuminate, contracted toward the 

 base; flowers usually clustered, brownish purple, drupe orange color. Up- 

 land woods; May-June; common. 



T. angustifolium L. Stem 2-6 feet high, hairy; leaves lanceolate, acumi- 

 nate, tapering to the base, hardly connate; flowers mostly solitary, yellow- 

 ish. Woods: May-July; infrequent; Johnson and Lee counties. 



SYMPHOR'CARPOS Juss. Low branching shrubs, with opposite oval 

 short-petioled entire leaves and small roseate axillary flowers. Calyx-tube 

 globose, teeth 4-5, short, persistent. Corolla campanulate, limb regular, 4-5- 

 lobed. Stamens 4-5, short, inserted in the throat of the corolla. Stigmas 

 capitate. Fruit a globose berry. 4-celled, 2 of the cells with a single seed, the 

 others abortive. 



S. vulgaris Mx. Indian Currant. Coral-berry. Stems slender, 2-4 feet 

 hio-h: leaves nearly sessile, downy beneath; flowers in short thick clusters; 



