Hypericum punctatum Lam.
Family - Hypericaceae
Stems - Multiple from base, erect, to +60cm tall, herbaceous, green to red, branching above in inflorescence, simple below, from woody rhizome, glabrous, with many black glandular punctations.
Leaves - Opposite, sessile, entire, oblanceolate to oblong, truncate to emarginate or obtuse at apex, 5-6cm long, 1.5cm broad, with many black glandular punctations below and on margins (punctations below lighter in color than those on margins), glabrous, often turning reddish-purple with age.
Abaxial leaf surface.
Inflorescence - Terminal bracteate cymes. Peduncles to 1.5cm long, with multiple black glandular punctations. Flowers sessile or short-pedicillate, each subtended by a small linear bract to 3mm long.
Flowers - Petals 5, yellow with black glandular punctations in lines and dotted, to 5mm long, 1.5mm broad, glabrous, distinct. Stamens many from base of ovary. Filaments 3.2mm long, golden-yellow, glabrous. Anthers yellow, .1mm long. Ovary ovoid, greenish-white, glabrous, 3-locular. Ovules (seeds) many. Styles 3, to +3mm long, glabrous. Stigmas often reddish. Sepals 5, to 3mm long, 1mm broad, glabrous, with distinct vertical venation, with some black glandular punctations.
Flowering - June - September.
Habitat - Fields, waste ground, moist open woods, moist thickets, prairies, streambanks, roadsides, railroads.
Origin - Native to U.S.
Other info. - This is the
smallest flowered member of the genus in Missouri. The flowers only being
about 8mm broad. The species is easy to ID because of the prominent black
glandular punctations found over most of the plant. The leaves turn a brilliant
reddish-purple with age.
Photographs taken in the Ozark Scenic Riverways, Shannon County, MO., 7-1-03.