Hairy rockcress

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Hairy rock cress flowers

Hairy rock cress habit

Hairy rockcress leaves

Hairy rockcress

Hairy rockcress inflorescence

Morphology

Stem

Erect, simple or branched above.

Leaves

Basal and cauline, alternate, simple. Basal leaves with petiole .2 to .8 inch; blade spatulate, oblanceolate, or oblong, .4 to 3.2 inches long, .4 to 1 inch wide, margins entire, wavy, or dentate, surfaces sparsely to densely pubescent with simple or branched hairs. Cauline leaves sessile; blade oblong to ovate or lanceolate, .4 to 3 inches long, .12 to 1 inch wide, base nearly cordate to auricled, margins entire to dentate, lower surfaces hirsute or becoming glabrous with age.

Inflorescence

Racemes, terminal. Fruiting pedicels erect, .08 to .5 inch.

Flower

Sepals 4, distinct, oblong, 2.5--4 mm, glabrous; petals 4, white, distinct, .14 to .2 inch, base attenuate; stamens 6, 4 long stamens barely exserted, 2 short stamens included; sigma 1.

Fruit

Siliques, sessile, strongly ascending or appressed to rachis, linear, 1.4 to 2.6 inches long, .04 to .1 inch wide, slightly flattened; seeds brown, round to oblong, .04 to .07 inch, essentially smooth, winged, sometimes obscurely so.

Ecology

Habitat

Bluffs, cliffs, ledges, open floodplains, and rocky sites in tallgrass prairies.

Distribution

Northeast quarter of Kansas and Cherokee County

Additional Notes

Synonyms

Alternative scientific names that have been used for this plant.