Round-fruit St. John's-wort

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Round-fruit St. John's-wort leaves

Round-fruit St. John's-wort flowers

Round-fruit St. John's-wort

Round-fruit St. John's-wort

Round-fruit St. John's-wort

Morphology

Stem

Erect, unbranched or few-branched, not black-punctate.

Leaves

Cauline, opposite, simple, leathery; petiole absent; blade narrowly elliptic or oblong to narrowly lanceolate, 1 to 2.75 inches long, .1 to .6 inch wide, lower surface with numerous transparent glandular dots but not black-punctate, base rounded or acute, margins entire, tip acute.

Inflorescence

Terminal and axillary, cyme-like or thyrse-like, 7-70-flowered.

Flower

Sepals 5, subequal, broadly ovate to lanceolate, .1 to .2 inch, apex acute to acuminate; petals 5, yellow, oblanceolate to elliptic, .1 to .2 inch, not black-punctate; stamens 45-85; styles 3.

Fruit

Capsules broadly ovoid to globose, .2 to .3 inch; seeds about .1 inch.

Ecology

Habitat

Tallgrass prairies, rocky woodlands, and roadsides.

Distribution

East 1/3 of Kansas